Shift At Will - semi Automatic review.The following is my review of the ESS-Racing's Shift-At-Will (F1-style semi-automatic) kit installation and operation.Rating are out of Five (1 bad, 3 okay, 5 excellent)The Kit:thumbsup::thumbsup::thumbsup::thumbsup::thumbsup:The kit comes with a controller box, two terminal-connectors, a modified Autometer gauge, a connector cable, and two F1-paddles. The controller box replaces the Automatic Transmission Control Unit ACTU. [read more]
What should be done at a
100,000km service?
The following is a list of
part numbers and pictures, as well as prices, from TTZ Performance of the
various parts necessary for the 100k service (note: prices subject to change):
Also see what is done in
this tech write up at www.ttzd.com
http://www.ttzd.com/tech/60k/60kmenu.html
(they call it 60k as it's
60,000miles)
- Simon/ Stillen
[read more]
A New Nissan 3.0-liter V-6 Twin-cam twin-turbo Engine with Dual Intake and Exhaust Systems
Written by: K. Yamamura, M. Naramura, A. Ishii, M. Nakajima, and M. Enomoto Nissan Motor Co. Ltd
Abstracts:As a new generation sports car engine to lead the field in the 1990s a 3.0 liter 60 degree V type 6 cylinder, 4 cam, 24 valve engine (VG30DETT) has been [read more]
This article contains a complete Intake system for the Z32 (TT) from the AFM right through to the throttle bodies)
Z32 Intake piping from AFM to the throttlebodies [read more]
How to install a Series 2 PTU (Printable PDF with images)
How to install a Series 2 Power Transistor Unit (PTU)
By now it is common knowledge that the series 1 PTU seems to be a common point of failure. These units were fitted to the series 1 Z32 '89 to late '93 and were recalled in Japan and the US [read more]
Fixing a faulty speed sensor
The PDF in the link above contains the picture, below is the article text only
Speed Sensor Tip
I found the following article on the UK 300ZX site. All credit to JeffTT from UK. Tony (Z-FNQ) A lot of owners have issue with the speedo, power steering, auto box change etc.
All of these are related in as [read more]
By Thomas Bell
The process is in two parts:
1. Adjusting the clutch rod for proper travel.
2. Bleeding the hydraulic system properly.
Tools needed: 10-mm and 14-mm open end wrenches, jack stands, a pair of pliers, a short length of rubber hose, one or two glass jars and at least one pint of DOT-3 brake fluid.
1. Adjusting the clutch rod [read more]
Antenna mast problems.
Scenario 1
The antenna would not go all the way down, it always protruded a bit. The metal mast was sticky to touch but dry in appearance. Turn o the radio & the mast extends, so out with the Kerosene and a rag to wash the mast. It works better, all the way & down. Repeat the process a [read more]
Autometer Electric Water Temperature gauge install into Z32
This guide details how an electric Autometer Water temperature gauge can be installed into a Z32 300zx by replacing the original water temperature sender on the upper pipe from the block to the radiator hose.
I've aimed to make this fairly in depth and I'm sure many of you will skip steps or do [read more]
How do I keep my car from stalling at speed?
If the car will stall when the clutch is pushed in at speed to coast, the fix is simple: This is fairly common with the K&N style after market intakes, primarily with the Stillen model because the 'horn' for the filter is polished smooth. The simple solution is to tape [read more]
Air Filter Replacement/Cleaning:
Another of the simple DIY jobs on the Z. The air filter is the first (basically only) line of defense to keep debris from entering the engine. When it's dirty, it restricts airflow, reducing available horsepower & torque. Replacing the stock filters or cleaning the K&N style filter will regain the lost horsepower. This cleaning was [read more]
Air Guides for Rotor Cooling Installation:
A little known design change on the Z32 is the addition of the front air guides to aid in cooling of the rotors. I believe the first year to have them is '93.
Part numbers required for full retrofit to make the '90-'92 have the same braking system up front as '93-'96: (yes, [read more]
OK, I had to search through quite a bit of info on here to compile this. I'll attempt to break it down as thoroughly as possible.
BACKGROUND (AIV): No aftermarket ECU that has been sold for years retains AIV functionality. If you have a later year Z, the AIVs were deleted altogether. The ECU compensates for lack of AIV by [read more]
Speed alert using VR2 settting on the speedo..>>
On the speedometer there are two small blue variable resistors. VR1 is used to calibrate the speed and VR2 is used to calibrate for the speed warning chime.VR2 is a 2k ohm linear device. The formula used to calibrate the chime is as follows:VR2(ohms) = 16xkph-750Thus, for 0 resistance the lowest setting [read more]
Special thanks to K-Zed for technical assistance
Whilst doing an under-plenum water hose bypass I found the existing tech articles for this a little vague. So, with thanks to Rob (K-zed) here are additional photos which should clarify any questions.
This photo is of the heater hose area where most of the action takes place.
- by Zed4life and K-Zed [read more]
I know there is a general idea about Patrol gearboxes but for anyone unsure, the Y60 Nissan Patrol GQ (1988-1998, also known as the Ford Maverick until 1994) gearbox is exactly the same as the 300ZX.
From: http://www.patrol4x4.com/forum/showthread.php?t=1
Patrol automatic gearbox:
4-speed Automatic
RE4R03A
4-speed electronic auto with lock-up torque converter and two-mode shift pattern (economy & power).
Gear Ratios:
1st: 2.784
2nd: 1.544
3rd: 1.000
4th: 0.694
Reverse: 2.275
These are [read more]
Ask Sarah
Answers to Readers Questions
By: Sarah Forst
Hey Sarah, I have a 94 300ZX 2+2 with about 135K miles on it. When I am in "park", my engine would rev up as normal. But when I put it into D or any other gears (under load) and rev the engine, the engine would scream but there would be no power. The [read more]
Auxiliary Fan Operation and Diagnostic Tips:
This page is intended to assist in understanding when the fan should work and provide some diagnostic tips for checking and testing components. It is intended for the more experienced DIYer. Please read the ENTIRE page, including conclusions and the Fine Print before starting any actual work.
For Z32 owners who are having overheating [read more]
Auxiliary Fan Operation and Diagnostic Tips:
This page is intended to assist in understanding when the fan should work and provide some diagnostic tips for checking and testing components. It is intended for the more experienced DIYer. Please read the ENTIRE page, including conclusions and the Fine Print before starting any actual work.
For Z32 owners who are having overheating [read more]
Aux Fan runs with AC
Hooking up your Auxilary Fan low speed to engage simultaneously with Air Conditioning operation
Applications: Twin Turbo only. NA's only have a single speed aux fan which should be left to be controlled by ECU. Whilst this will still work for NA's, I don;t recommend it.
Who should do this: Only absolutely pedantic, obzessive types like me who [read more]
Balance tube O-rings - 2x 34IDx2.5mm, 1x 18IDx2mm
O-rings for injectors 16x21x2.5mm & 20x27x3.5mm (6 of each)
fit '90 model tt, standard injectors [read more]
Hi All
In case you ever accidentally pull the wiring out of your Blazt Diagnostic Connector, here is the basic wiring layout, so you can resolder it yourself.
[read more]
Boost Jet "Jumpers"
Getting welding tips (boost jets) into the vacuum hoses is a bit tough. Getting them back out when necessary is tougher. I know this has been discussed before, but the following little write-up might help those looking for something a bit more visual.
If you want an easy way to change/replace/remove/test different boost jets without installing a boost controller, [read more]
Factory Boost Jets ??? - Yes and No.
and Controlled Boost Scenarios
Enough posts have been made now that everyone pretty much knows the "FACTORY BOOST JETS" exist. Well, just to close the case, here you go. On each side of the car, there are the factory boost solenoids. A short hose from the intake/inlet pipe (to the turbo compressor inlet) connects [read more]
Quick and Dirty Blow Up Tool
This is a brief description of making the QAD blow up tool. With this you can place it in the intake piping where the Mass Air Flow sensor, and apply pressurised air to the engine (no more than about 20psi) to listen for escaping air around the engine bay, indicating a vacuum leak.
The first thing [read more]
BOOST LEAK LOCATOR GUIDEIF YOU HAVE INSIGHTS, CORRECTIONS, EXPLANATIONS, or REPAIR WRITEUPS, PLEASE email me SO I CAN MAKE UPDATES!
If you own a Twin Turbo, you've probably seen a lot of talk about BOOST LEAK. And if you've ever posted a question about "lack of power" or "low boost", you've certainly had a response that reads "Do you have a [read more]
Brake Caliper Seal Replacement:
After serious use, the seals on the brake caliper pistons will wear our & start to leak. Rebuilding is fairly simple and much cheaper then replacing the entire caliper. I rebuilt the seals in my Skyline calipers but the kit is the same as the 300ZX's. In fact the pistons are also the same size, it's [read more]
Brake Pad Install:
One of the simplest DIY performance enhancements is changing the brake pads. A good set of high performance pads will make a huge difference in the Z's lacking brake performance from the factory.
This installation of PBR Metal Master front pads P.N.: D1170M was done on my '95 TT
Timing:
Anytime the pads are down to [read more]
Project Nissan 300ZX: Part 4
Building the Ultimate Z Engine
By Mike Kojima
In our last foray in the adventure of building the poor man's exotic killer, we did some extensive suspension and brake work to prepare the chassis of Project 300ZXTT to make it worthy for the installation of our anticipated 500-hp-to-the-wheels engine. In this installment we will actually start to [read more]
Globe specs in the 300ZX
Can anyone confirm these bulb types? I couldn't
find a list anywhere so made my own (all philips type). Anything I REALLY
wasn't sure of I've put in italics, quite a lot but it's alot of best
guess. Be good to get this (in [read more]
...................
The original Nissan 300zx specialist
........"Z SELLING ".........
1) Preparation
Ok this is where you make sure that before a potential buyer is any where near your car that all the paper work for the car is available to hand, that`s all the legal stuff like MOT`s Owner`s documents,service books and receipts etc are up to date information wise and are current.There is [read more]
Bypassing the Fuel Pump Control Unit
The fuel pump control unit regulates voltage to the fuel pump during vehicle operation (start-up, idling, and under boost). The varying voltage allows the fuel pump operate at different rates and send the appropriate amount of fuel to the injectors. It doesn't act to regulate the fuel pressure, but works in conjunction with the fuel [read more]
Bypassing the fuel pump control unit in a 2+2 seater
This idea came from a Twin Turbo post and we have just had opportunity to check it with MikeZ's Fuel Pump Control Unit.
This mod is considered a temporary solution to get you mobile when the Fuel Pump Control Unit dies. To understand what the FPCU does, review Zeeman's tech article. If [read more]
Installing a Trailer Hitch
By Brian Duley
The purpose of this page is to give the reader an ideas about installing a trailer hitch on a 1990-1996 Nissan 300ZX. I welded my hitch so I could remove the receiver when not in use and you could not tell that the car has a trailer hitch. I use mine to tow a 3 [read more]
Batteries Tech ArticleWith the recent spate of Battery Related threads in Z-Related, I thought it was time for a “batteries” tech article. Having contracted to a certain Roadside Assist provider for around five years now (or 25,000 battery replacements if you prefer) I thought I may be able to shed some light on the topic.Let's start with some basics….What is [read more]
Cargo Cover Repair:
Heat and excessive use of the cargo cover can yield to a split cargo cover where the handle is. The cargo cover is not inexpensive to replace. The repair method described is a long lasting, cheap, and effective fix.
Tools: Black Silicon RTV (100% silicon) Approximately 25-30 standard clothes pins Paper Towels
Parts needed: none
Estimated Time [read more]
Cat-Back Exhaust Installation:
The more air moved through an engine, the more power that can be produced. Generally one of the first modifications to any car is to replace the usually restrictive OEM exhaust with an after market 'cat-back' performance exhaust. Cat-back refers to replacing the mufflers and the pre-silencer, so replacing the exhaust from the catalytic convertors back. [read more]
Three contributions in this article by Bob in Oz, K-Zed and 90TTZ (Please read all)
What can I check to reduce excessive fuel consumption? - Bob in OZ
Excessive fuel consumption most likely has a cause due to an external sensor:
Things to check are:
1. Coolant Temperature SensorIf the coolant temperature sensor connections are corroded, or the sensor is defective, the ECU will [read more]
By zcar91 with some elbow assistance from chr15g
This tech article explains how to change the OPS
using a non-genuine equivalent unit made by VDO. The reason for this article
is that the VDO unit is priced at about one quarter that quoted by Nissan for
the genuine article (presently VDO [read more]
Changing your Oil Pressure Sender Unit (OPS)
By zcar91 with some elbow assistance from chr15g
This tech article explains how to change the OPS using a non-genuine equivalent unit made by VDO. The reason for this article is that the VDO unit is priced at about one quarter that quoted by Nissan for the genuine article (presently VDO is A$60.00 compared to [read more]
I've been cleaning injector connectors today and I think this is the easiest and quickest way to do it. I've read about it on tt.net and just added my pics, some of you might find it useful
[read more]
Center Console Clock Repair:
Most of the older Z32s have problems with their clocks. The display gets too dim, or goes out altogether. With the cost of a new OEM clock above one hundred dollars, most opt to put in a turbo timer or some other small electronics in the prime console real-estate, install an audio head unit with a [read more]
Remove the bonnet above the gauges cluster
It's held in place by 2 screws
Remove the two screw under the bonnet
Remove the bonnet.
Above the cluster, there are 2 screws, remove them
Remove both control pods on the side of the Gauge Cluster
You have to remove both control pods, the A/C and the "rear-defrost / fog / [read more]
How to do a transmission removal and clutch replacement
By Brian Duley
I. Warning:
Removing a transmission and replacing a clutch is a complex and time-consuming procedure. By replacing it yourself, you alone are responsible for the safety and functionality of yourself and vehicle. If you do not want to take that chance, I recommend that you take you car to [read more]
1 the connectors for the actual coilpack itself (not the coilpack, but the wiring leading to it)... Try wiggling it as the engine is running and try to bring on the problem.2: You may have a break/bad connection somewhere in the circuit. Here's the wiring diagram if you are so inclined... It's not that scary !The left pin of [read more]
Have you checked ------------->
1 the connectors for the actual coilpack itself (not the coilpack, but the wiring leading to it)... Try wiggling it as the engine is running and try to bring on the problem.2: You may have a break/bad connection somewhere in the circuit. Here's the wiring diagram if you are so inclined... It's not that scary !
The [read more]
Color Combinations & Serial
Numbers:
Color Combinations:
These charts are from
Steve Richardson @ Courtesy Nissan. Just
something I hadn't seen elsewhere. Thought it might be useful for the 'What year
is that?' questions... Check out the Brown Pearl Graphite Convertible in the
second chart... Never seen that before!
Up to September '91
[read more]
How do I check my compression?
1. Warm up engine. 2. Disconnect the crank angle sensor connector. 3. Remove balance tube, all coil packs and spark plugs. See [ http://www.ttzd.com/tech/sparkplugstech.html ] for more detailed instructions. 4. Attach a compression tester to #1 cylinder. 5. Depress accelerator pedal, keep throttle wide open. 6. Crank the engine for 5 to 7 seconds [read more]
Simmo's Musical fuel pump Tech Article
well i got stuck with another 2 seater pump, my car is a 2+2. anyways the pickups are different and with the help of Tom aka Zrated (Perth Zed Performance) we changed the pickups over with ease!!..
o have missed a couple of pics but u will get the general idea..1... remove fuel cap2. find [read more]
The A to Z of Coolant Temp Sensors and Detonation Sensors
Coolant Temp Sensor | Detonation Sensor
Firstly, get a cut lunch/coffee/alcohol to read thru my drivel and forgive me in advance for potentially insulting your intelligence by describing the fixes in very "blind freddy" fashion- I don't know your level of tech- expertise so I'm 'assuming' you know little... ok.
The Coolant [read more]
The A to Z of Coolant Temp Sensors and Detonation Sensors
Coolant Temp Sensor | Detonation Sensor
Firstly, get a cut lunch/coffee/alcohol to read thru my drivel and forgive me in advance for potentially insulting your intelligence by describing the fixes in very "blind freddy" fashion- I don't know your level of tech- expertise so I'm 'assuming' you know little... ok.
The Coolant [read more]
The A to Z of Coolant Temp Sensors and Detonation Sensors
Coolant Temp Sensor | Detonation Sensor
Firstly, get a cut lunch/coffee/alcohol to read thru my drivel and forgive me in advance for potentially insulting your intelligence by describing the fixes in very "blind freddy" fashion- I don't know your level of tech- expertise so I'm 'assuming' you know little... ok.
The Coolant [read more]
Hi All,
The information below applies to generally to the Z32 and in particular to
the TT. I understand that cooling of the Aus-spec NA is better than the TT due
to the slightly larger capacity radiator. It would be an interesting
experiment to install an Aus-spec NA radiator into a TT and closely observe the temperature variations, perhaps a [read more]
The easiest way if its an auto
IS get a long handled breaker bar (they are $16 at super cheap)
Take out the injector fuse from the fuse box behind the drivers side strut tower, let the handle of the bar rest on the passenger side cross member. and crank the engine quickly !!
It works every time. I wouldnt pull the [read more]
Underdrive Pulley Install
Before you start you will need the following items:
Metric socket set ranging from 8mm to 27mm
3 leg pulley puller
Under drive pulley
Replacement belts
Breaker bar
Jack and stands
The first step is to remove the radiator and the process for doing this can be found here. Once that is done the next step will be to [read more]
Underdrive Pulley Installation:
The underdrive pulley is a product that is very new to the Z scene, it's been available for domestics for a long time. Basic concept for hp gain it two-fold: 1st, the pulley has a smaller diameter (1.), which is a mechanical advantage. It changes the ratios between the crank and the accessories, actually driving them [read more]
Download the article here as a Printable PDF
ASCD Modification (92+)
This simple modification to the cruise control circuitry allows the cruise control to be set to higher than the stock 105kph. Following the procedure here will allow it to be set to a maximum of 148kph. The information here is only applicable for 92+ Z's (maybe 93, check the numbers on [read more]
Click here for the PDF of the ASCD Modification. The PDF has pictures
ASCD Modification (89-92)
This simple modification to the cruise control circuitry allows the cruise control to be set to higher than the stock 105kph. Following the procedure here will allow it to be set to a maximum of 148kph. The information here is only applicable for 89-92 Z's [read more]
ASCD Modification (92+)
This simple modification to the cruise control circuitry allows the cruise control to be set to higher than the stock 105kph. Following the procedure here will allow it to be set to a maximum of 148kph. The information here is only applicable for 92+ Z's (maybe 93, check the numbers on the circuit board and chip).... if your [read more]
CURING ERRATIC IDLE (Part 1)
General: Erratic idle is one of the most common problems with our cars. This is caused by the number of engine components that are affecting it, such as: IAA (Idle Air Adjusting unit), Air Regulator, Throttle Bodies, Injectors, CAS, fuel delivery, vacuum piping... This article will cover the three components mentioned first.
IAA-unit: This [read more]
For those that may remember over the last few months I have been experiencing problems with overheating. Although replacing the radiator cap solved most of the problem, what remained was this intermittent overheating in which resulted in overheating occuring after a week or more.
Driving hard would also accelerate the symptoms.
Perhaps it would be more accurate to state that the resultant [read more]
NEW REMOVAL OF DASH TECH WITH PICS
hey guys did this today and took pics on the way. i used this tech article to do the job http://www.twinturbo.net/ttnetfaq/FA...dashboard.html took me about 2 hrs, and this was taking my time as it was my first time doing it, so clearly labelling bags with were the screws go etc...ive edited the above [read more]
How do I get my dashboard off?
Take off the part over the gauges. There are two screws above the cluster.
Take off the trim around the cluster. Remove the panel below the steering wheel to get to all of the screws. Remove it anyway, because it'll happen later.
Next, remove the cluster. Be careful when removing the connectors.
Take [read more]
How to care for your Zed - Detailing tips from Zanjara - Body
So you want to keep the Zed looking good......
Ok i have done alot of research as well as doing it myself over the years... I have been a fulltime car detailer for over 3 years now but started detailing bits and pieces since i was 15... The following [read more]
How to care for your Zed - Detailing tips from Zanjara - Glass and Plastics
So you want to keep the Zed looking good......
Ok i have done alot of research as well as doing it myself over the years... I have been a fulltime car detailer for over 3 years now but started detailing bits and pieces since i was 15... [read more]
How to care for your Zed - Detailing tips from Zanjara - Wheels and tyres
So you want to keep the Zed looking good......
Ok i have done alot of research as well as doing it myself over the years... I have been a fulltime car detailer for over 3 years now but started detailing bits and pieces since i was 15... [read more]
How to diagnose and bypass a defective detonation sensor in a 90+ Nissan 300 ZX Twin turbo.
By Henri Le Hir
My Z is a 1992, "Continental European" Nissan 300 ZX Twin Turbo, 2+2 (!!) (left hand drive). All the tests have been done on this car. Hopefully, this applies to all the Z32 all over the world.
Special thanks to the "Jim [read more]
What is detonation?
Detonation (also called "spark knock") is an erratic form of combustion that can cause head gasket failure as well as other engine damage. Detonation occurs when excessive heat and pressure in the combustion chamber cause the air/fuel mixture to autoignite. This produces multiple flame fronts within the combustion chamber instead of a single flame. When these multiple flames [read more]
Changing the Differential oil (turbo & non turbo models)
Steve Chong
and
Andy Woo
Created : 980415Last updated: 991017
1) Jack up your car so that it is level. See other "How Someone ..." for suggestions of how to jack up your car.
2) Use a 3 liter (3/4 US gal) container to catch the oil.
3) Undo the filler plug. You [read more]
Z32 Differential Seal ReplacementCleanup/Paint, and ES Bushing Installation (notes)
THANKS TO EVERYONE that responded to my hundreds of posts while working on the differential.Specific thanks to Musky & Spddracer
This page discussed the following topics, in this order:
Differential Seal Replacement (See Differential Removal Here) with Cleanup and Painting (Spiffing Up)
Energy Suspension (ES) Bushing Installation and Differential Reinstallation Help
Differential Seal Replacement, Cleanup and [read more]
About a year ago, I replaced the gearbox oil with some Redline lightweight shockproof.The easiest, quickest and cleanest way to refill the gearbox is to drill 2 holes in the cap of the 4-5 ltr plastic gearbox oil container that contains the new oil and fit 2 tightfitting plastic hoses (I used the clear ones available at any Supercheap, Bunnings [read more]
Door Alignment:
After many years of use, the stock Z32 doors can begin to sag and cause difficulty in opening and closing. In the past, it was recommended to replace the hinges. I found it easier, cheaper, and just as effective to just re-adjust the door hinges. The following article was documented on a '91 5spd TT.
Estimated Time Required: [read more]
Door Lock and Door Handle Removal, Disassembly, and Repair:
After many years of use, the stock Z32 door handles can succumb to wear and tear. For this technical document, I had broken my lock cam preventing me from unlocking my door with the key. The following article was documented on a '91 5spd TT.
Tools: 10mm 1/4" drive socket with [read more]
Ground Net:
A very inexpensive mod that can potentially add greater throttle response and cure hesitation, is adding additional grounding points to the cars electrical system. By tying various locations directly to the ground terminal of the battery it effectively increases the efficiency of the electrical system.
Tools: 10mm socket Wire strippers Connector crimper
Parts needed: 10 to 15 feet [read more]
Ground Net:
A very inexpensive mod that can potentially add greater throttle response and cure hesitation, is adding additional grounding points to the cars electrical system. By tying various locations directly to the ground terminal of the battery it effectively increases the efficiency of the electrical system.
Tools: 10mm socket Wire strippers Connector crimper
Parts needed: 10 to 15 [read more]
Apex'i Super AVC-R Boost Controller Installation
Typically, the first step in increasing boost to gain more HP on TTs is getting a Jim Wolf ECU and 'boost jets'. Boost jets are good for about 12.5-15 psi. However, to run higher boost levels (or to run more steady low boost levels) requires and electronic boost control. If you expect to run [read more]
I rescued this article from [ http://www.z32.org ]Whoever wrote it deserves the credit, I just added in some photos.
Installing the Blitz SBC-iD & PowerMeter-iD
What are the Blitz SBC-iD & PowerMeter-iD?
Simply put, the Blizt SBC-iD is an electronic boost controller which is loaded with advanced features and a unique display/interface.In addition to 4 boost presets it also has [read more]
ECU Diagnostics:
Nissan offers CONSULT tests for a fee to pin point problems through the ECU. There are procedures to get some of the same results without a CONSULT tool from the ECU's memory.
1. Remove the passenger floor mat (1.).
2. Pull back carpet. It's held up with 3 spots of velcro (2.).
3. Remove the wooden floorboard [read more]
To test for ECU codes, you need to gain access to the ECU itself. It's located under the false floor in the passenger side floorboard. Follow the steps below to gain access to the ECU. Remove the passenger floor mat.Peel the carpet back, it's only attached with Velcro.Remove the wooden false floor, it's held in place with 4x 10mm bolts.On [read more]
It seems to me that one of the hardest things about fixing a Z (apart from needing arms with an extra elbow) is knowing what is wrong with it in the first place. Luckily the engineers at Nissan realised that somewhere down the line people like us were going to have a hell of time getting all of the little [read more]
ECU Swapping, Installing Boost Jets & Other Notes:
Engine Basics:
Internal combustion engines are, at the most basic level, air pumps. If you pump more air through them you will get more power. There are some little details that get in the way of this simplistic view, but it works well for this discussion. Turbo and Super chargers create [read more]
I know this is a technical post and should be posted in tech, but I also know that a large number of folks dont even bother to read the technical forum (you know who you are) and I feel that this writeup needs to reach as many folks as possible.
Over the years I have had numerous incidences where I [read more]
EGR Valve Replacement:
When optimal air/fuel mixture is attained (14.7:1), the combustion process creates several different nitrogen oxides (NOx) because the combustion chamber is operating at over 2000° F . To reduce the NOx emission, the combustion chamber temp must be lowered. So the Exhaust Gas Recirculation (EGR) valve (generic diagram 1.) recirculates the now inert exhaust gas back into [read more]
Understanding Exhaust Gas Recirculation Systems
Posted 11/5/1997 By Henry Guzman
Exhaust gas recirculation (EGR) systems were introduced in the early '70s to reduce an exhaust emission that was not being cleaned by the other smog controls. Oxides of nitrogen (NOx) are formed when temperatures in the combustion chamber get too hot. At 2500 degrees Fahrenheit or hotter, the nitrogen and [read more]
Easy Engine Bling.. (with pics)
Hey to all my fellow Zedders.. On Saturday i finally when out and got the rest of the stuff i needed for a bit of cheap bling.. i know people say that there is nothing cheap for a Zed but this is a rare exception. i decided i would redo the the cam covers and [read more]
Oil Change:
One of the
simplest DIY maintenance chores is changing the oil. Why spend money to have
someone else potentially ruin your Z over something so simple?
Timing:
Every 3,000 miles
[read more]
Engine Removal:
This is an advanced TECH page, I'm not going to go into super detail on the simpler items. If you can't figure it out just by doing it, this whole job is probably over your head. A lift makes this easier, although it's not a requirement. Observe all proper safety procedures, jack stands etc. This is obviously [read more]
Please click one of the following two links for an English translation of the Cabin fuse box (Drivers side kick panel).
You can cut the translation out, it fits neatly inside the fusebox cover.
Word document version
Adobe PDF Version [read more]
The Overview:
My car is a 1990 Japanese spec Nissan 300ZX twin turbo, auto, 2 seater. I bought it in June, 1999 with an indicated 75K on the odometer. The condition of the car suggested to me that the reading was probably correct - overall it was in excellent condition. It is well maintained and in the last 18 months has [read more]
Security Modifications:
remote fuel pump kill switch install
This list of instructions illustrates the process to install a switch which will cut power to the fuel pump when desired for extra security.
I received some new information from a Z32 owner who did this install and had some advice concerning the install and positioning of a fuse.
Revised sections are in [read more]
Fixing a failed power window
Fixing power windows (driver side only) failure by TheZed, (special thanks to Wyyked)
This article is intended to help those who have trouble with specifically their driver side power window. While this article is not a "fix all" as there may be other causes for the problem, it is relatively simple to do, so attempting this first [read more]
Fixing the "LIGHTS" warning
This warning light is pretty annoying in my view, it is designed to monitor the resistance in the rear light assembly and if a bulb goes out, the resistance is reduced/increased and the "LIGHT" comes on on the dash when you brake. Usually, the main brake lights are fine, but the 4 little lights in the middle [read more]
Is going with a lightened flywheel worth it?
I was torn between whether or not to get a lightened flywheel and did a bit of research before I finally decided to get mine. As part of this research, I did surveys and talked with several reputed people on this topic. I'll try to make this short.
Survey Results:
I sent [read more]
Clutch Replacement:
As a regular wear item, eventually the clutch and other relevant parts will have to be replaced. OEM parts work fine for an OEM powered car. Stage III will overpower the stock setup in no time (my clutch lasted all of 2 days). Part of the modification pathway is keeping the car well rounded. Beefy brakes for more [read more]
How do I rewire my fog lights??
The way I have my switch wired just results in the fogs and lows staying on when you turn on the high beams as long as the fog light switch is on. So then you have the following setup:
SWITCH POSITION
FOGS
LOWS
HIGHS
Off
Off
Off
Off
Parking
N/A
N/A
N/A
Lows [read more]
Front bar removal
Removal of the front bar is not as difficult as it first appears, and is only tricky really because of a few hard to find and hard to get to bolts. Once you've done it once it is very simple, and considering how long it takes to remove, much time can be saved when doing other jobs that [read more]
How do remove my front fenders?
To remove the panel (this is to remove the passenger side fender specifically):
Tools:
- Medium Phillips Screwdriver - 10 mm socket wrench (a "deep" socket may be necessary) - 10 mm socketdriver (ie screwdriver with socket end) - Flashlight
1. Open the hood. There are 4 or 5 10mm bolts holding the panel in [read more]
By IB and Zcar91
zcar91 and I have done many timing belt changes but up to now we have avoided changing the front main seal.
This task is daunting because the crank sprocket is very difficult to remove. There is no room behind the sprocket to get a puller on and the sprockets tend to seize on very tight. Since new sprockets [read more]
Front Tension Rod Install/Replacement:
Eventually it happens to all Z32's. The silicon bushings on the tension rods start leaking resulting in poor handling. Usually pulling to one side during braking, or nose-diving in corners. Replacing them with OEM tension rods will cure the problem temporarily, but they will fall to the same fate eventually. The ultimate solution is a [read more]
Z32 Fuel Economy
There is always a lot of conjecture about the fuel economy of these cars.Some people seem to get 200 km per tank around the city, others get 550km, and most get somewhere in between.
There are of course many factors that will affect your fuel economy. Some but not all are listed here:-
A heavy right foot (Driving Style)
Faulty, [read more]
Fuel Filter Replacement:
Another of the simple DIY jobs on the Z. A clogged fuel filter can cause a lot of problems from simple hesitation to cratering an engine. When there's not enough fuel for the air being brought through the engine, detonation will occur from running too lean a mixture.
Timing:
The service manual never gives a recommended [read more]
Fuel Pump Replacement:
The stock Z32 fuel pump is good for up to 750 HP, so there is no real need to go with aftermarket units once it breaks down. However, the pump can go bad, especially if it has more than 80.000 miles on it. Symptoms of pump going bad are:
- buzzing noise, under load, from the gas [read more]
How can I stop my fuel cap from leaking. I smell fuel when I turn right.The filler neck on all imported Zeds is replaced, as part of compliance, with one designed to suit the smaller unleaded nozzles used in Australia. Not all importers take enough care in sealing the replacement and there have been a number of incidences of them [read more]
What is the capacity of the Z fuel tank?
The fuel tank capacity of all Z's (coupes, convertibles and 2+2's) is 72 litres.
There is a low fuel warning light which comes on with approximately 15 litres of fuel left... it is an orange globe behind the fuel pump icon itself on the fuel gauge. It is not uncommon for this globe [read more]
G4 8 piston brake review
This is something I wrote for Skylines Australia but I've had some Z people also ask me about this product so here is a copy and paste of the post. This is obviously for these brakes on my Skyline, but this IS Z related as the brakes are very similar for the two cars, and [read more]
Turbo Tech 103 (Expert)
This article is a bit more involved and will describe parts of the compressor map, how to estimate pressure ratio and mass flow rate for your engine, and how to plot the points on the maps to help choose the right turbocharger. Have your calculator handy!!
1 Parts of the Compressor Map: ? The compressor map is a [read more]
At the last tech day I brought out a rough pair of ramps that I knocked up
from some left over timber.
Anyway, I've had a few requests for the sizes so here's the info.The ramps
are low enough and long enough to get under the front bar.
Once up [read more]
Glossary300ZX, Z32, Z31: The Whole Reason You're Here, Aint It Cool!
A/T: Automatic Transmission
AAC: Auxiliary Air Control
ACC: Air Conditioning Compressor Clutch
AFC: Air Flow Converter
AFM: Air Flow Meter
AIV: Air Injection Valve
AVC: Actuator Valve Controller (Boost Controller)
BCM: [read more]
Goose honk can be heard on Twin Turbo models, where the factory recirculation valves are still installed.
As these valves age, air can leak past the reed valves when it is not supposed to, resulting in a honking noise.
This will typically occur above 2000rpm, and at light throttle (just into positive manifold pressure).
It can occur outside of this area depending on [read more]
My transmission grinds from 5th to 4th, anything I can do?
The 4th gear grind is a common problem and it is caused by the soft metal that the syncros are made of. The rest of the trans parts supposedly are made of a harder metal. Nissan supposedly acknowledged this according to a post a long time ago here, but [read more]
The AIV's are located in the wheel arches and are known to be annoying. Most Z's will develop a gurgle at idle because water builds up in one of the lines. There are a number of solutions. You can empty out the water, put in a drain hole to stop it happening again, or remove the AIV's completely. [read more]
As a few of you know, a while ago my Zed got driven into by a Rodeo in the left hand side :sick:, which resulted in a left door and rear quarter panel replacement, and an all over respray. What used to irk me every time I opened the hatch was that the little round piece of clear adhesive plastic [read more]
Usually the "lights on" warning chime will only chime when the lights are on, the door is open and the engine is off. This is a problem when you have a turbo timer as the engine is running when you open the door, so it doesn't chime. This modification changes that so it chimes when the engine is running.
The time [read more]
Part 1
Removal of the headlights on a Z is surprisingly difficult (it's a familiar trend isn't it? considering there are only 2 nuts and 2 bolts actually holding them in. Contrary to popular belief, this can be done without removal of the front bumper on both an NA and TT (I've even done it here with larger intercoolers). [read more]
Usually the "lights on" warning chime will only chime when the lights are on, the door is open and the engine is off. This is a problem when you have a turbo timer as the engine is running when you open the door, so it doesn't chime. This modification changes that so it chimes when the engine is running.
The time [read more]
How to remove the heater core without removing the dashCan you remove the heater core without removing the dash? Yes, the process is listed below, however also read the comments by John and Paul at the bottom before you decide to take the leap.
Removal
First remove the 2 heater hoses from the heater core pipes on the firewall side under the [read more]
Heater Core Replacement
Performed by yt nitram on a 1991 NA w/ driver airbag and auto climate controlSpecial thanks to PerlZTT, clarkj, Whoa, and Steve91TT for help during the process
When:
Is coolant gushing at the feet of the passenger and/or driver? Do you smell a sweet smelling fluid and are your windows fogging up? Your heater core has most likely [read more]
HICAS Diagnostic:
Turbos come standard with High Capacity Actively Controlled Suspension, a fancy way to say 4 wheel steering. There's a visual diagnostic mode to check for problems in the HICAS functions. The 90-93 TTs have hydrolic HICAS running off the power steering pump, where '94+ utilizes electric actuators to handle the rear steering chores. Their codes are a [read more]
HICAS Diagnostic:
Turbos come standard with High Capacity Actively Controlled Suspension, a fancy way to say 4 wheel steering. There's a visual diagnostic mode to check for problems in the HICAS functions. The 90-93 TTs have hydrolic HICAS running off the power steering pump, where '94+ utilizes electric actuators to handle the rear steering chores. Their codes are [read more]
HID retro fit complete (With lots of pics)
A couple of members expressed interest when I mentioned I'd be doing a HID retro fit. So I offered to post some pics, here they are...Here is the Hella ballast without it's mounting case
Hella ballast with case and Philips bulb in packet
Close up of Philips D2S HID bulbBosch projector
Custom brackets
Projector with alignment [read more]
Why are my high beams constantly staying on?
In this case you will probably find that your headlights, parkers, foglights and taillights don't work either - very awkward and embarrassing driving at night.
Go to the fuses in the drivers footwell area (to the right of the accelerator pedal). You will probably find the "Clearance Lamps" fuse blown - this is on [read more]
Why are my high beams constantly staying on?
In this case you will probably find that your headlights, parkers, foglights and taillights don't work either - very awkward and embarrassing driving at night.
Go to the fuses in the drivers footwell area (to the right of the accelerator pedal). You will probably find the "Clearance Lamps" fuse blown - this is on [read more]
Thermostat
Thermostat
Description A thermostat is a part of an engine cooling system. The thermostat helps to maintain the engine coolant temperature within the normal operating range.How it works:When the engine started cold, the thermostat is closed. The engine coolant (antifreeze) does not circulate through the radiator (see the pictures). Instead it returns back into the engine through the by-pass tube. [read more]
Thermostat
Thermostat
Description A thermostat is a part of an engine cooling system. The thermostat helps to maintain the engine coolant temperature within the normal operating range.How it works:When the engine started cold, the thermostat is closed. The engine coolant (antifreeze) does not circulate through the radiator (see the pictures). Instead it returns back into the engine through the by-pass tube. [read more]
All you ever needed to know about…
Blow off valves:
What is a blow off valve and how does it work?
What is the Stealth FX?Download Clip
A blow off valve goes under many different names such as dump, bypass, recirc (short for recirculation), diverter, and pop off valves. No one term is correct, the lingo just tends to change in different [read more]
A Short Course onBrakesby Charles Ofria
The modern automotive brake system has been refined for over 100 years and has become extremely dependable and efficient.
The typical brake system consists of disk brakes in front and either disk or drum brakes in the rear connected by a system of tubes and hoses that link the brake at each wheel to the [read more]
How do I adjust the headlights?
There are 4 screws which can be used to adjust both the main beam and high beam of the headlights. They
can all be adjusted from the engine bay.
Note US spec Z's do not
have all of these adjustments.
- Blipman
[read more]
An intercooler or charge air cooler is an additional component that looks something like a radiator, except air passes through the inside as well as the outside of the intercooler. The intake air passes through sealed passageways inside the cooler, while cooler air from outside is blown across fins by the engine cooling fan.
The intercooler further increases the power [read more]
If your handbrake (e-brake for our USA friends)needs adjusting, here's a basic rundown on how to do it:
Loosen wheel nuts
Disengage handbrake (handbrake lever should be down) and back off the tension on the cable from the adjustment point on the handbrake lever
jack up rear of car and put on stands
Remove wheels
Remove rear caliper and rotor and inspect the handbrake [read more]
Timing Tweak:
There has been a lot of discussion and interest in adjusting the timing of the TT to gain horsepower (I have not done this on a NA, but it could be done). First off, a disclaimer, Jim Wolf does not recommend adjusting the timing, if anything, he suggests setting it at 13 degrees (stock TT is 15 degrees [read more]
- How to fully clear out your Japanese OEM clear corners -
.
This guide applies to the Japanese OEM clear corners and NOT US stock lenses.You must first get the Japanese lenses to achieve this look.
There's really not much to this so we'll get right into this. There are probably alot of ways to clear your lenses, but these are [read more]
How to install Blow Off Valves (BOV's)
Background:
In a turbo charged car, when the throttle is closed after high boost, air that was going to enter the engine hits the throttle butterfly and bounces back through the turbo charger, slowing it down (and reducing its lifespan) resulting in more lag when you get on the throttle again (the most frequent example [read more]
Low beam + high beams on at the same time modification
OK,The reason this modification is handy, is in particular for those of us with HID low beams. When HID low beams turn on from cold, they take a few seconds to come up to full brightness. As a result, if you use your high beams for long enough for your [read more]
How to Modify the Japanese Spec Z32 Headlight to take H3 Bulbs in the Low Beam
If you have an Australian delivered Z32 (2+2 NA) read no further, Nissan has already done this modification for you.
My previous headlight tech was the method used by an auto electrician when I blew a low beam globe back in 1998. The main problem with [read more]
How To Properly Adjust Your Clutch Pedal
When upgrading to a heavier duty pressure plate in any vehicle, the pedal from the factory is not set for enough travel. This page will provide you with the information you and/or your mechanic needs to know when properly installing a high performance clutch. If you are experiencing a new clutch slipping or if [read more]
(source Twin turbo.net)
How do I replace a broken wheel stud?
I've done this on a front wheel. I suspect the rears will have the same
design.
1. Break the rest of the lugs free on the wheel with the broken stud. Jack
up the car and place on jack stands as required. [read more]
How to replace the driveshaft center bearing
This is a task that any zed owner with basic mechanical skills and a few tools can accomplish and hopefully this write up will encourage you to have a go. There are 2 available replacement units, the genuine Nissan unit and an aftermarket alternative from Drive-Pro (cheaper).
Tools required:
Car stands and/or ramps
8mm allen key [read more]
The Installation of the I-Dial Indiglow gauges is broken up into three parts (see all parts below)
Part 1Removal of the cluster
Part 2Installation of the gauges
Tools required:
1x small Phillips head screw driver
1 pair of cloth glove liners
Thin double sided tape
Drill
After removing the instrument cluster from the dash, separate the cluster from the clear cover and black [read more]
OK, I'm feeling generous today and thought I'd make a faq for anyone that feels they might want to save about $300.There isn't a day that goes by that someone doesn't post about an idle problem so here you go. This post will compliment the R&R post already in Tech:
[ http://www.twinturbo.net/ttnettech/iaa/iaa.html ]
Also review these 2 pages directly from [read more]
Idle Air Adjusting (IAA) Unit Replacement:
Background: The dealer had already isolated my erratic idling (750-1800rpm when warm), so instead of paying the two hours labor for the dealer to replace my IAA unit, I decided to try my luck and found out it wasn't as hard as I thought. The IAA is made up of the IACV-AAC (Idle Air [read more]
Timing Belt Replacement:
The largest part of 60k maintenance is replacing the items on the front of the engine: timing belt, water pump, seals, etc. Not really a hard job, but very time consuming. I made this guide a little more detailed then most, hoping a few people that normally wouldn't tackle a project like this will dive [read more]
Illuminated Rear Panel Modification:
Let me start off by saying this is a time consuming and delicate project. If you don't have patience or the understanding/approval of your significant other to use their kitchen, don't try this. Pay someone to do it for you. I broke two panels before I got this right and spent a lot of time that [read more]
In response to many requests from members, here is information on a very good alternative to using OE parts to replace the EFI injector connectors.
I sourced this from Quikcrimp in Glenorchy, Tas, but you may be able to get them from elsewhere. They are packaged in a Quikcrimp container, and made in Taiwan - no other source details. The Quikcrimp [read more]
For this job you will need the following;
Phillips head screwdriver
8-12mm Socket set (used instead of driver if nuts to tight)
8-10" shifter.
Time required ranges from 30-45 minutes. The procedure is the same for both TT and NA, and should be applicable to pretty much all brands of aftermarket pod filter.
I would advise you to go for a short [read more]
By BlackiceTT
Decided to finally install my Tune Agent Dump pipes form the group buy today. I did it with out having to tilt the engine/or/remove the brake booster.
Took a bunch of pics as I went along of how I went about it.
Tools needed,
13MM Ring Spanner
13MM Ring Spanner but cut in half
10MM Spanner, a long and a stubby one, [read more]
Stillen Header Installation for NAs:
Probably the toughest bolt-on performance upgrade for NAs is the Stillen header set. Headers try to allow each cylinder to be 'equidistant' from the collector right before the flange to the rest of the exhaust system. (1.) Where the stock manifolds allow cylinders 5 & 6 (the rear two) to have the shortest path [read more]
Stillen Header Installation for NAs:
Probably the toughest bolt-on performance upgrade for NAs is the Stillen header set. Headers try to allow each cylinder to be 'equidistant' from the collector right before the flange to the rest of the exhaust system. (1.) Where the stock manifolds allow cylinders 5 & 6 (the rear two) to have the shortest [read more]
Installing IC spray pumps and nozzles
Installing the water bottle
Part I | Part II | Part III
The following is not so much step by step instructions on how to do this, but more an example of how someone else has done it and may give you some ideas. There are a million ways to do this with a number of factors [read more]
Install JWT VTC Springs. My Experiences
HOW TO :: Install JWT VTC Springs. My Experiences
Difficulty : EASY!
Time : 30mins give or take if done properly.
Tools : Quarter inch socket with a 7mm socket / Allen key
New Springs, come as a pack of 2.
First off you need to remove the timing belt covers, using an Allen key.
To remove [read more]
Full AIV Removal For JapSpec Non-Turbos
by DJ_Party_Favor
I finally did the deed today and removed my AIV
system from my zed.
Coming from someone who has never done anything mechanical i think i did a
pretty good job on the removal and i thought id write up [read more]
A faulty Det Sensor or det sensor circuit causes the ECU to go into safety map (retarded timing and rich mixture= poor performance, bad fuel economy and in twin turbo's reduced boost).
It's (whilst a simple device) stuck down in the bowels of the back of the motor and really needs the plenum (intake manifold) removed to fix = many hundreds [read more]
A leak down or "cylinder leakage" test is similar to a compression test in that it tells you how well your engine's cylinders are sealing. But instead of measuring pressure, it measures pressure loss.
A leak down test requires the removal of all the spark plugs. The crankshaft is then turned so that each piston is at top dead center [read more]
My LED conversion....
This weekend I did the LED conversion on my dash and associated side pods. Some of the globes had blown so what better chance to get in there and spruce it up a bit. The job wasn't difficult as such, just time consuming and fiddly because you're dealing with tiny components..The LEDS I bought from http://www.superbrightleds.comFor the [read more]
LED Pod Conversion for those interested
Posted by
Mick300ZX(NJ) on March 04, 2006 at 8:53 PM
This message has been viewed 2960 times.
Message
LED Gauge Pod Conversion
This was done on my car 90-NA (without electronic climate control) Difficulty from 1 to 10 (10 being the hardest) 3 Time @ 15 minutes each pod.
This is what you need:9 – 3mm White (or color [read more]
"Nissan Lifters, Guaranteed to Tick Everytime.."
I've done this to my personal engines when I've built them and it works very well. The hydraulic lifters used by nissan are just like any other hydraulic lifter in terms of its function and design: By using the engine oil as a cushion for valve control action, you have a zero-lash, self adjusting [read more]
Download link number 1
http://www.shopmonkeys.com/Z32%20manual%201.pdf
Download link number 2
http://www.fortfoster.net/Z32Manual.zip.torrent
Link to the manual hosted on the UK Website
http://300zx.co.uk/cgi-bin/manual.cgi
Link to the manual hosted on the USA Website
http://300zx-twinturbo.com/cgi-bin/manual.cgi
Link to the Australian site (Searchable PDF)
Searchable PDF 160 MB
------------------------------------
How to use the manual
How to read wiring diagrams
General Maintenance
[read more]
Locating and Repairing Fuel Leaks:
If the smell of fuel comes from the air vents it's probably originating from the fuel damper, fuel pressure regulator or loose interconnecting hoses. Other parts could be at fault such as the fuel filter connections or fuel injectors.
Disclaimer:
This is a combination of my experience and what I've read from the service manual. [read more]
Got fed up with people saying 'your window switch is loose'. I bet I am not the only one that has a switch with the little plastic hooks broken off. Fix: Take a simple electrical double spade connector (See pic) Drill out a small hole in the spade end. Unscrew the existing screw behind the switch and fit the connector.(see pic) Bend the connector at an [read more]
Antenna mast problems.
Scenario 1
The antenna would not go all the way down, it always protruded a bit. The metal mast was sticky to touch but dry in appearance. Turn o the radio & the mast extends, so out with the Kerosene and a rag to wash the mast. It works better, all the way & down. Repeat the process a [read more]
Fixing the aerial that stays up with a turbo timer
The problem:
Some people have found that upon installation of a turbo timer, their electric antenna does unusual things, and in particular stays up when the car is turned off when used in conjunction with a turbo timer.
The solution:
The solution is quite simple: you will need to cut a signal wire to [read more]
I replaced all the exterior body moldings on my 1992 300ZX Twin Turbo with new, OEM pieces. These included the long pieces on the sides of the windshield, the two short little roof pieces behind the T-tops that are just a few inches long, the long door pieces that sit on the outside edge where the glass goes in and out [read more]
It would seem, by the number of reports of problems with it, that the PTU is the "Achilles Heel" of this otherwise brilliant car. Nissan realised this, and in mid 1993 replaced the PTU with a more reliable unit. This article is therefore only of use to pre 93 PTUs; if you have the newer version it should not be [read more]
As you are probably aware by now, the PTU in the Z32 is a problem. The belief is, due to the heating and cooling of the PTU during it's life, the electrical connectors become stressed and break. You may be lucky and have some hesitation for several weeks or months before it stops working all together, or it will just [read more]
Why is my HICAS light on?
The most common cause of the HICAS light coming on is low fluid in the power steering reservoir. This needs to be filled with Automatic transmission fluid almost right to the very top. This is sometimes easy to diagnose, as the light will be on when the car is cold, but as the fluid warms [read more]
Why is my HICAS light on?
The most common cause of the HICAS light coming on is low fluid in the power steering reservoir. This needs to be filled with Automatic transmission fluid almost right to the very top. This is sometimes easy to diagnose, as the light will be on when the car is cold, but as the fluid warms [read more]
Why is my HICAS light on?
The most common cause of the HICAS light coming on is low fluid in the power steering reservoir. This needs to be filled with Automatic transmission fluid almost right to the very top. This is sometimes easy to diagnose, as the light will be on when the car is cold, but as the fluid warms [read more]
I dunno if it can be altered in any easier way, but this is what *I* used and seemed to need to convert:
1)the main subframe (nothing attached, needed parts listed)2)BOTH axles (NA are different diameter)3)bearing housing (since axles attach with their different diameter) (tip:easyier to pick up whole knuckle so no pressing needed)4)driveshaft (front AND rear halves including the [read more]
O2 sensors monitor the amount of oxygen present in the exhaust gasses and adjust fuel mixture (slightly) within preset maps to give the best trade between performance and economy. O2 sensors do fail from time to time and can result in poor fuel economy (not exclusively, just one of many causes!) They are located in the exhaust manifolds just after [read more]
How does the oxygen sensor in a car work?
Every new car, and most cars produced after 1980, have an oxygen sensor. The sensor is part of the emissions control system and feeds data to the engine management computer. The goal of the sensor is to help the engine run as efficiently as possible and also to produce as few [read more]
If the stock boost gauge on the dash stops working, but the car still feels like it's boosting, then the problem is probably a cracked or split boost hose at the boost sensor.
The black box next to the blue arrow is the boost sensor. The hose can look fine, but when it goes bad, it's usually cracks where it attaches right at the box. [read more]
Compare for yourself...
one minute after idling starts
three minutes
four minutes
five minutes
seven minutes
After running 100M
After 2kays
Morale of the story? "Normal" location for a properly warmed up engine is just below half to half. Any more than that and you can see you could be overheating... You don't get much warning...
What can you do? Read this article about overheating.
regards
mark
zed4life [read more]
Changing the manual tranny fluid
By
Steve Chong
and
Andy Woo
Created : 980415Last updated: 980608
1) Jack up your car so that it is level. See other "How Someone ..." for suggestions of how to jack up your car.
2) Put a 4 litre (4 quart) container under the transmission.
3) Undo the fill plug that's on the right hand side of [read more]
by Peter (OZ-300) on Aus300zx.comAbout a year ago, I replaced the gearbox oil with some Redline lightweight shockproof.The easiest, quickest and cleanest way to refill the gearbox is to drill 2 holes in the cap of the 4-5 ltr plastic gearbox oil container that contains the new oil and fit 2 tightfitting plastic hoses (I used the clear ones available [read more]
What values should the
temp and oil pressure guage read?
The oil pressure guage
usually sits above 4 when the engine is cold and the oil thick. Once things warm
up and the oil gets a bit more viscous it sits below 4, and if at idle for a
while drops even lower. The oil pressure sender unit commonly goes on [read more]
My Z suddenly has 0psi of oil pressure!
A very common problem on Z32s, although not nearly as bad as it sounds. Generally it's a failure of the oil pressure sender unit:
The sender is the thing with the orange dot on it in the picture next to the oilfilter. Just pull off the rubber boot and unclip the [read more]
What values should the temp and oil pressure guage read?
The oil pressure guage usually sits above 4 when the engine is cold and the oil thick. Once things warm up and the oil gets a bit more viscous it sits below 4, and if at idle for a while drops even lower. The oil pressure sender unit commonly goes on [read more]
My Z suddenly has 0psi of oil pressure!
A very common problem on Z32s, although not nearly as bad as it sounds. Generally it's a failure of the oil pressure sender unit:
The sender is the thing with the orange dot on it in the picture next to the oilfilter. Just pull off the rubber boot and unclip the [read more]
PCV Valve Replacement:
The PCV valve was the first of the emission system components to be put into production vehicles. They recirculate gasoline and oil film impregnated air from inside the engine block into the air intake system after the throttle bodies. This air is combined with fresh air entering the air intake system to be then burned in the [read more]
Photo database
The photo database is designed to help out with technical explanations in the forum, where you can use photos from the db to aid in explanation to others certain concepts or areas of the car. It also may be useful to those pulling apart their car who wish to be armed with some prior knowledge, or look at a [read more]
Boost Gauge Installation:
The factory gauge cluster boost gauge might be satisfactory for stock twin turbos, but when the modifications start getting added, an accurate measurement of intake PSI is a must. A performance boost gauge can offer measurement in PSI or Barometric pressure (BAR) depending on model. One of the easiest & best looking places to install the [read more]
Plenum Replacement/Injector Replacement:
This TECH page covers much more then just replacing the
injectors. When the injectors are being replaced for performance reasons (or
just need to be replaced), there are a lot of other things that can be
[read more]
someone wanted pics of my PCV relocation
I cant remember who it was, but seeing as my engine is out, I took some pics of it
basically I've just got a couple of right angle brass fitting threaded on one side (1/4 bsp from memory) and 10mm nipple of the other
ran 10mm fuel hose under the plenum round the back and [read more]
aus300zx.com disclaimer by Wykked:
"We cannot confirm the source of this comparison as being done an independant party. People should not take it as gospel. We have seen the pictures and results on a number of different websites over the last 5 or so years. Originally it was supposed to have been a test that was actually carried out by "independant [read more]
GETTING RID OF THE HICAS - TT PUMP MOD!
Here's one for the TECH Section guys. This is how you mod
modify a TT Power Steering Pump so that you can continue to use it once the
Hicas rear steering unit and all the line have been removed.
[read more]
GREDDY PROFEC B II Installation
(will be updated upon completion - need to get hoses set up to control solenoid)Thanks as usual to TT.net and it's members for responses and archived, searchable posts : )
Installing the Greddy PROFEC B II on a 300zx is really quite simple and the Profec is also among the most simple of EBC's -- it gets [read more]
things one must know about how the boost control system works and how one would go about controlling it to understand the parameter settings in the profec BC.
Make sure the controller is in psi mode. Refer to the manual on how to switch to psi from kilopascals.
When you turn the car on and turn the knob, there will [read more]
I did not originally recommend this as a routine procedure. My [Fuel] Pressure Regulator Vacuum Relief (PRVR) solenoid went bad which caused some starting issues. Took me forever to isolate the problem. My car would chug terribly for about a half a minute during a warm (not cold, not hot) start. Once I bypassed the solenoid, my car ran and started perfectly so I never [read more]
1) Make sure the engine's nice and cold..... dealing with hot fluids and metal isn't going to be fun for anybody
2) Drain the radiator fluid by either undoing the drain plug, which is accessible through a panel under the car near the lower driver’s side corner of the radiator, or by pulling off one of the hoses. Also remove the [read more]
1) Make sure the engine's nice and cold..... dealing with hot fluids and metal isn't going to be fun for anybody
2) Drain the radiator fluid by either undoing the drain plug, which is accessible through a panel under the car near the lower driver’s side corner of the radiator, or by pulling off one of the hoses. Also remove the [read more]
1) Make sure the engine's nice and cold..... dealing with hot fluids and metal isn't going to be fun for anybody
2) Drain the radiator fluid by either undoing the drain plug, which is accessible through a panel under the car near the lower driver’s side corner of the radiator, or by pulling off one of the hoses. Also remove the [read more]
Chewy's cool water level device
Credit goes to JetZX for retrieving this article!
I made one for about $30 using a VDO water level sensor. It has a resistance value when water is around the sensor and then it's an infinite resistance when no water is around it. So a simple comparator circuit is all that was needed.
Water Level Indicator Mini-TechAfter [read more]
How do I read the engine timing marks correctly?
It's very easy to misread the timing marks. First, lets cover what's up here... On the crank pulley, there's a mark corresponding between #1 cylinder 0 degrees, top dead center (0TDC) and a timing indicator with hash marks on it in degree increments to the upper left of the pulley. The [read more]
Clutch Replacement:
As a regular wear item,
eventually the clutch and other relevant parts will have to be replaced. OEM
parts work fine for an OEM powered car. Stage III will overpower the stock
setup in no time (my clutch lasted all [read more]
Source - Twiunturbo.net
When I changed my rear wheel bearings on my TT, there weren't any good pictures so here are some pictures. I also had some questions-maybe your questions will be answered here.
The L&R TT rear bearings ARE almost identical and can be swapped with a modification. A driver's side bearing can fit a pass side hub if you [read more]
Older Z32 cars used R12 Freon system. Now there is no R12 to buy in order to recharge the system. But there is new product called Freeze12 which is suposed to be R12 replacement. Freeze12 goes for $8 at Pep Boys. Z32 AC system requires 2 cans to be charged(0.75kg) slightly lower than original R12 refill.I pressurised the system with [read more]
First of all, if you follow the 60K Tech writeup EXACTLY, you'll never need this information.
Loosen the locking nut (1 x 12), the adjustment bolt (1 x 12 mm) & the pivot bolt (1 x 14 mm through the pulley's hole) on the power steering pump.
That said, I loosened my pivot bolt all the way. As anyone that [read more]
Tools required:
2 and 3 mm phillips screwdriver
blade screw driver
14 mm and 10 mm socket or ring spanner
small mirror
Time required: 1 - 2 hours
When your power window stops working, there are a couple of things that could be the cause. If you're lucky it will be a blown fuse or bad electrical connection. The less fortunate may [read more]
Cylinder Head Replacement, without removing the engine<?XML:NAMESPACE PREFIX = O />
1990 Nissan 300zx NA
+ 60K Service, Fuel Injector/harness replacement, and other recommended procedures during a rebuild
Nissan VG30DE: 3.0L DOHC 24v 60-degree V6, iron block, aluminum heads, variable intake valve timing, direct ignition
Download a slideshow of the rebuild here(~15Mb) – this is a virus-free EXE made with FotoAngelo slideshow software. It [read more]
Tools needed:10mm nut driver/runneror10mm socket and wrench1. Lift up on the seat hooks on both sides at the same time and let the seat down.
2. Pull back the carpet backing. these are attached by velcro and plastic fasteners that just pop out. be careful they might break off.
3. Use the 10mm socket or driver and remove the 2 bolts on [read more]
Repairing a "peeled up" dashboard
A very common problem on the Z32 is that the dashboard around the defroster comes loose and peels up.
So how do we fix this ?
Remove the plastic defroster guide by using a flat screwdriver
Put some very strong adhesive (preferably 2 component epoxy) in the opening (white arrow)
NOTE: Before doing this, you might want [read more]
About 3 years ago after first getting my Z - I realized that the window button switch didn't glow when the dash lights were turned on. It wasn't easy to find that switch during nightime driving! I decided that a nice ultra bright blue LED would be a good fix. Did the mod and things worked well ever after...
Flipping [read more]
At 134000 Kms, the rear end felt strange on washboard surfaces, and after a near lose at 120km/hr I examined the rear shocks. The left had apparently been leaking over a long time, as the road dirt covering it was black with oil.
Choice of shocks: I had (in Hobart) choices of Pedder, Monroe, Gabriel or KYB. I've had good experiences [read more]
WARNING: This tech is not a do-it-yourself process for the inexperienced mechanic. I would rate the difficulty as a little bit above changing out a clutch. It is a very time consuming process to change out the bushings... most of the time is spent removing the old bushings. It took me about 70 hours to do this using air tools. [read more]
Replacing the Power Window Motor Unit
Tools required:
2 and 3 mm phillips screwdriver
blade screw driver
14 mm and 10 mm socket or ring spanner
small mirror
Time required: 1 - 2 hours
When your power window stops working, there are a couple of things that could be the cause. If you're lucky it will be a blown fuse or bad electrical [read more]
Starter Relay Replacement:
For several months, my car had been hesitating about half a second after I turned the key before the starter reacted. Finally one morning, it wouldnt quit spinning after the engine cranked. The relay had stuck in the closed position. Sometimes the car just won't turn over at all. The starter relay needs to be replaced to [read more]
It is important to ensure all your old coolant is expelled from your system before any new additives are mixed in.
Firstly, you want any rusty water out of there, and some coolant types are incompatible if you are changing brand.
Also, Coolant additives have a lifespan, so even if your old coolant looks OK, it still needs to be flushed out.
Here [read more]
How to run a wire through the firewall
Ok, this is how I threaded the hose for my boost gauge through the firewall, going through the grommet for the bonnet release cable. Note this is for a right hand drive vehicle.
Tools required:
Screwdriver
Coat Hanger
Strong tape
Firstly you need to remove the kickguard in the drivers footwell by removing the 4 [read more]
Safety Boost Indicator
1: Easy Safety Boost Indicator (SBI) -Approx $10 in materials2: Manual Boost Controller (MBC)
1:Easy Safety Boost Indicator (SBI)
The idea for this came from both Gonzales and Maciej but I wanted a circuit anyone (even a hack like me) could follow and I wanted a little more control over the way it worked.
What is Safety Boost? This is [read more]
As a lot of us know, the seatbelts in the zed can stop retracting properly with the result of the latch plate getting caught in the door and causing damage. Ive found that this is not just a problem with the 300ZX but most Nissan cars and there is a repair kit available from Nissan.
The problem is with the D [read more]
Alternative Link 1 (Zedworld UK)
Alternative Link 2 (Twinturbo.net)
Alternative Link 3 (Nissan Performance Magazine)
Alternative Link 4 (AMZTECH.NET) [read more]
To begin a diag it is best to take a short drive 2 or 3 miles to ensure full working temperature has been obtained first.and then switch OFF the engine
With overdrive switch in on position and lever in P switch on ignition but do not start engine,the A/T lamp should lit up for about two seconds then go out.
Switch off [read more]
Introduction
This article concerns the Type 1 power transistor unit (PTU) that is installed in the Nissan 300ZX (Z32) motor vehicle. This model PTU is manufactured by Mitsubishi and is prone to fail without notice. Unfortunately, I understand that it is not a matter of if the PTU fails but when it will fail!
The most typical symptoms of a PTU failure [read more]
When to do it
Anytime as the job is inside.
Installation Time: About 4 – 6 hours as I was extra careful and double checked each move against the manual.
Prior to purchase
Contact Maciej at Ess-racing via his email (link on the site) and confirm that your Automatic Transmission Control Unit (ACTU) is compatible with the SAW. As I had an Australian spec [read more]
What are the best shift points?
I spent a lot of time reading stuff on the web about hp vs. torque. I think I have it all figured out now. Although I could be entirely wrong.
Here's my current dynochart for my mods:
Here's the short & sweet. If I wanted to do what *feels* best, Like getting [read more]
Shifter Bushing Replacement:
After manual transmission Z's reach 60,000 - 70,000 miles, they have a tendency for the shifter to become loose when in gear. This is primarily due to the wear of two rubber bushings that fit between the lower arm of the shifter and the transmission linkage. By replacing these two bushings 99% of the "loose shifter" [read more]
-=300zx Short Shift Kit Install Guide=-
This is for those involved in my short shift group buy.
Introduction:
First, let's clear up some misconceptions running around the 300ZX world about short-throw shifters. Seems a lot of folks are installing shortened stock (or aftermarket) shifters and calling them a "short-shifter." They are not true short-throw shifters?they reduce the shift travel by lowering [read more]
My clutch is slipping, do I need a new one?
It's most likely (99%) the clutch pedal adjustment!
I had a Clutch Masters Cyclone 3.5 installed and it slipped like hell, especially after warming up. It was down to the fluid going hydroscopic when the clutch pedal was adjusted too high! (Basically it means the fluid got hot and expanded [read more]
OK so here goesPlease don't doubt this theory in public as unless you have seen it work you may be costing members thousands by sending them off changing seals and turbos etc when there may be no real need.I purchased a TT Z32 over six years ago, the engine and turbos were very tired and smoked a little - not [read more]
Fault Diagnosis
This section identifies some common faults associated with spark plug wear, incorrect applications and general problems with engine running conditions. The condition of the firing end of a spark plug is a good indicator of the general health of an engine.
Appearance
Possible cause/resolution
NormalLight brown, tan or grey firing end.
A good indicator that the plug is functioning correctly and general engine [read more]
Spark Plug
Replacement:
Another of the simple DIY jobs
on the Z. Either as routine maintenance or as a performance upgrade,
changing the spark plugs is easy to do. When adding more horsepower
performance mods, changing to a 'cooler' plug can [read more]
Description of the problem
If ...
Speedometer is working perfectly
RPM gauge is working perfectly
Both odometers (total & trip meter) do NOT work or are intermittent
HICAS is working
The steering is NOT heavy
then ...
This is NOT the right Tech Article for your problem ! See here instead
However, if ...
Speedometer is NOT working acceptably
The HICAS is NOT [read more]
Speedometer & Power Steering - speed sensor signal Repair
Description of the problem
If ...
Speedometer is working perfectly
RPM gauge is working perfectly
Both odometers (total & trip meter) do NOT work or are intermittent
HICAS is working
The steering is NOT heavy
then ...
This is NOT the right Tech Article for your problem ! See here instead
However, if ...
Speedometer [read more]
What's that squeaking noise coming from the front of the car?
Squeaking of the bonnet is usually the source of squeaking sounds at the front of Z's, caused by the front bonnet latch rubbing on the tounge of the bonnet. This can be greased as a temprary fix, however the better solution is to adjust the rubber bonnet stops (pictured).
By twisting [read more]
Stainless Steel Brake Line Install & Brake Bleeding Procedure:
Another performance improvement for the Z braking system is a set of Stainless Steel braided brake lines to reduce pedal 'mushiness' under street/racing conditions. Coupled with a high quality brake fluid like Motoul 600 to re-fill the lines with, the pedal stays firm under even the most extreme conditions.
This [read more]
The common indication of a bad starter relay is a clicking sound that appears to come from under the dash area on the driver's side. This is a fairly common problem. The typical warning sign of impending relay failure is a momentary delay in starter turning when starter switch is actuated. The following procedure will let you to test for [read more]
Steering Rack removal
Many people on here say that it's not possible without having to remove the crossmember and using a hoist to hold the motor, or by removing the engine. Well, I did it with everything in as I try to avoid pulling the motor for whatever reasons. I don't know how different the TT rack is. I did a [read more]
The following are the wires and their corresponding wires to wire up a new stereo head unit.
Ground - black
Accessories - red
Permanent battery - yellow
Rear right positive - brown
Rear right negative - black/red (2 of these!)
Rear left positive - blue
Rear left negative - black and white
Front right positive - orange
Front right negative - [read more]
STUD PATTERNS
VEHICLE WHEEL FITMENT GUIDE
MAKE MODEL STUD PATTERN "PCD"
ALFA
75, 90, GTV 5 X 98
145, 146, 155, 164 4 x 98
156, 164 5 X 98
166 5 x 108
AUDI
A3 5 X 100
A4, A6, A8, TT 5 X 112
Q7 5 x 130
S3 5 x 100
S4, S6 5 x 112
BMW
E30 4 X 100
E36, E46, E49 5 X 120
CHRYSLER
300C 5 [read more]
After a reading a lot of posts, a few attempts, de-splicing an old wiring harness, and much frustration; the wait is finally over. I figured out how to rewire the earlier wiring harness so that power is only applied to the injectors with the key in the ignition turned to "on".
Est. time: 10mins
Tools needed:10mm socketsoldering ironsoldervolt/ohm meterelectrical tapeand [read more]
After a reading a lot of posts, a few attempts, de-splicing an old wiring harness, and much frustration; the wait is finally over. I figured out how to rewire the earlier wiring harness so that power is only applied to the injectors with the key in the ignition turned to "on".
Est. time: 10mins
Tools needed:10mm socketsoldering ironsoldervolt/ohm [read more]
Clearing tail-lights
Things you will need before you start !
Diffuser from a fluorescent light
A grinder
A hair dryer
Two NARVA amber dyed HSV Commodore flasher bulbs part No. 47384 Approx $2.50 each. Alternately, take your old clear globe to an Aurobarn or such and ask them for an orange globe equivalent.
Note: You will need to carefully grind or file [read more]
Hey guys, on the weekend got busy and we did a tail light conversion.Have a read through this first, and then read this to do this alternative way which will give you a much better result, but also takes more time.http://www.aus300zx.com/tech/taillight/taillight.htmI am starting this tech at the point that the light is totally pulled apart including the grey plastic border [read more]
after seeing many zeds with tired and cracked targa vinyl,i thought i would redo mine while kathy was wiring up the new stereo system.its easy and here is a step by step for anyone interested,step 1:this is how alot of them lookstep 2:remove targastep3:unscrew both endcapsstep 4:take out centre plastic with a philips screwdriverstep 5 : remove old trimstep 6:rip [read more]
The A to Z of Coolant Temp Sensors and Detonation Sensors
Coolant Temp Sensor | Detonation Sensor
Firstly, get a cut lunch/coffee/alcohol to read thru my drivel and forgive me in advance for potentially insulting your intelligence by describing the fixes in very "blind freddy" fashion- I don't know your level of tech- expertise so I'm 'assuming' you know little... ok.
The Coolant [read more]
the A to Z of 300zx overheating
The A to Z of
If your zed has ever overheated, you'll know that instant panic feeling when you either see the temp gauge skyrocket up or you see steam rising from the hood. The zed engine bay is probably as cramped as you can get and this combined with an inaccurate temperature gauge [read more]
CAS:The Crank Angle Sensor informs the ECU about the current position ofthe crank shaft (pic 5).The most common reason for it affecting the idle is the connector getting dirty, although if the CAS connection is completely broken the car won'tstart at all. The best way to examine CAS is to pull it out completely.Be sure to mark its position so [read more]
Tools required:
Aerosol can of Throttle Body or Carby Cleaner @ approx $5.
Blade screwdriver
Old toothbrush
Clean rags
Time: Approx 30 minutes
Preparation: To assist drainage from the Throttle Bodies during cleaning, vehicle should be parked on a slight slope, and securely chocked OR parked on a level surface with rear jacked up. Not essential, but it helps.
1. Remove rubber intake [read more]
Throttle Cable Adjustment:
During the course of driving, the throttle cable may gain some slack and will be in need of adjustment. This is particularly important for those vehicles equipped with automatic transmission since this may affect the shift points of the transmission.
Tools Needed:
An allen wrench set to remove the hex bolts on the throttle [read more]
Timing Belt Replacement:
The largest part of 60k maintenance is replacing the items on the front of the engine: timing belt, water pump, seals, etc. Not really a hard job, but very time consuming. I made this guide a little more detailed then most, hoping a few people that normally wouldn't tackle a project like this will dive in [read more]
Timing Belt Replacement:
The largest part of 60k maintenance is replacing the items on the front of the engine: timing belt, water pump, seals, etc. Not really a hard job, but very time consuming. I made this guide a little more detailed then most, hoping a few people that normally wouldn't tackle a project like this will dive [read more]
90+ Nissan 300ZX Timing Belt Replacement
[Thanks to Joe Fabbre for his contribution in this scarey task. Car shown is his 91 300ZX NA. Andy 9705][Thanks to Steve Chong for his comments and suggested changes (based on his own experiences with his 90 300ZX NA), which Joe agreed with and therefore have been blended in with Joe's procedures. Andy 9707] [read more]
90+ Nissan 300ZX Timing Belt Replacement
[Thanks to Joe Fabbre for his contribution in this scarey task. Car shown is his 91 300ZX NA. Andy 9705][Thanks to Steve Chong for his comments and suggested changes (based on his own experiences with his 90 300ZX NA), which Joe agreed with and therefore have been blended in with Joe's procedures. Andy 9707] [read more]
Changing the Auto Tranny fluid (turbo & non turbo models)
By Steve Chong
Created : 980501Last updated: 980519
1) Jack up your car so that it is level. See other "How Someone ..." for suggestions of how to jack up your car.
2) Place a large pan, at least 2' X2' wide under the tranny to catch the oil. Up to [read more]
My transmission grinds from 5th to 4th, anything I can do?
The 4th gear grind is a common problem and it is caused by the soft metal that the syncros are made of. The rest of the trans parts supposedly are made of a harder metal. Nissan supposedly acknowledged this according to a post a long time ago here, but [read more]
Changing the Auto Tranny fluid (turbo &
non turbo models)
By Steve Chong
Created : 980501
Last updated: 980519
1) Jack up
your car so that it is level. See other "How Someone ..." for suggestions of how
to jack up your car.
2) Place a
large pan, at least 2' X2' wide under the tranny to catch the oil. Up to [read more]
ECU Tuning for VG30DETT
Generate ECU map tracing using ConZult
by Petri Karjalainen
Special thanks to all who have contributed in this area:
Devin for initiating and writing the ECU tuning info and revision.
Petri for contributing the ConZult tracing info.
Check ECU download page for the latest downables.
Message Board
Forum
ECU Tuning
by Devin (Z from Japan)
To start off with I will first [read more]
Turbocharger LubricationWritten by Mitchell Wilson
Providing proper lubrication for an engine is vital in ensuring its "survival" throughout its lifespan. Engines built with performance keys are more dependent on oil spremecy as well as oil safety. On turbocharged applicated engines, oil goes through very tough and unfavorable conditions that can lead to catastrophic engine failure or turbo failure. Turbochargers rely on [read more]
Twin POP Installation:
The more air you can get into the engine, the more potential horsepower to be gained, just like being able to flow more air on the exhaust side. But only to a point, Jim Wolf says the twin POP really isn't very beneficial until the engine is producing more than 600hp (flywheel) to take advantage of [read more]
The following is a table of tyre sizes and their overall diameter. 225/50/ZR16 is the stock Z tyre. Having a greater diameter will mean your speedo is reading less than your actual speed, having a smaller diameter will mean your speedo reads more than your actual speed.
Tyre Size
Approved Rim Width
Overall Diameter (mm)
Revolutions per 1km
225/50/ZR16
6.0 - 8.0
632
529
225/45/ZR16
7.0 - [read more]
document.hide.ref.value = document.referrer;
Underdrive
Pulley Installation:
The underdrive pulley is a product that is very new to the Z scene, it's been available for domestics for a long time. Basic concept for hp gain it two-fold: 1st, the pulley has a smaller diameter (1.), which is a mechanical advantage. [read more]
Intercooler Install:
Somewhere along the upgrade path, the stock intercoolers are going to have to be replaced. The stock intercoolers are very small and rather cheaply built with plastic endcaps. Aftermarket intercoolers are substantially larger and are fully aluminum (1. & 2.). Like the injectors, they do the job well for a stock car, but after a few mods, they [read more]
Upgrading the Fog and Clearance Lights
Upgrading the fog lights is even easier than changing the low beams. The fog lights also use the H3 bulbs. The standard ones are 35 watts. For my upgrade I chose to go to 55W bulbs. I would be cautous about installing higher wattage bulbs than 55 because the wiring is not particularly heavy and [read more]
VACUUM HOSES & CONNECTED COMPONENTS GUIDE
Below is a complete checklist of devices connected to vacuum along with Nissan diagrams (slight aesthetic/readability modification). You should be able to follow the vacuum lines in your car pretty effectively with these diagrams. Note that ANY OF THESE devices or their associated hose/clamps could be defective/loose esulting in VACUUM/BOOST LEAK! Refer to your engine [read more]
This is a brief description of making the QAD blow up tool. With this you can place it in the intake piping where the Mass Air Flow sensor, and apply
pressurised air to the engine (no more than about 20psi) to listen for escaping air around the engine bay, indicating a vacuum leak.The first
[read more]
ENGINE1. The cylinder block castings and main caps are the same. They both have oil squirters that direct oil towards the underside of the piston, but they point at different angles. The oil squirters on the TT direct oil straight into an off center hole on the underside of the TT piston, which leads to a hollow area inside the [read more]
What are the pros and cons of Front Mount Intercoolers (FMIC's)?
When upgrading intercoolers, you can go for bigger IC's in the same location, or go to a Front Mount Intercooler.
FMIC Pros:FMIC can be made bigger than side IC's and therefore provide better cooling
Cons:FMIC blocks air flow to radiator, air con, air filter and oil cooler (some can be moved to [read more]
300ZX Fuel injection Diagnosis- by Steve Chong
Part 1
Introduction
Every couple of months a Z car owner somewhere cries out "Help, my car is suffering from hesitation/stumble: what could be wrong?" . These types of problems can be a pain to track down, and if the problem is an intermittent one, it can be months before the cause is found. With my [read more]
What color is my Z?
First, for the sake of recognition, here are the "common"
names for some (not all) of these "official" names:
Exterior:
Cherry Red Pearl, aka burgundy
Glacier White Pearlglow, aka pearl white or off-white
Charcoal Pearl, aka gray
Platinum Mist Metallic, aka [read more]
What does the ECU monitor and do?
The ECU takes in quite a few signals from the engine
- Engine coolant temp sensor
- O2 Sensors
- Mass Airflow Sensor
- Knock Sensor
- Fuel Temp Sensor
- Exhaust Gas Temp Sensor (93+)
- Crank Angle Sensor
- Throttle Position Sensor
- Throttle valve switch for Soft/Hard Idle
- Neutral Position Switch
- Speed Sensor
- Ignition Switch
- A/C Switch
- Battery [read more]
MAS:
Mass Airflow Sensor (pic 6) tells the ECU how much air is entering the engine
which in turn gives the information about how much fuel needs to be supplied.
Check the MAS by looking through it to see if the hot-wire is damaged or clogged by dirt. You can gently clean the hot-wire by spraying it with a contact cleaner [read more]
Automotive mass airflow sensors
A mass airflow sensor is used to determine the mass of air entering an electronically fuel-injected engine. The air mass information is necessary for the engine control unit to calculate and deliver the correct fuel mass to the engine. Air changes its density as it expands and contracts with temperature and pressure. In automotive applications, air density [read more]
What Type of Headlight Bulbs to Buy?
The light bulb brightness is measured by its intensity in Lumens (abbreviation: lm), not by the power consumption which is measured in Watts (abbreviation: W). According to the Bosch/SAE Automotive Handbook (4th Ed.), a H3 bulb running at 12 Volts and 55 Watts should produce 1450 lm or Luminous flux to meet legal requirements. [read more]
A funny looking light on
my dash has come on, what is it?
The light which most people can't
figure out from the icon alone is the cat over temp warning light, as shown
here:
The cat over temp warning light is
triggered by the two sensors just after the catalytic converters when they read
a temperature which is too high. This [read more]
OK, figured I’d take a lot of pics and add another writeup to the TTnet database for removing trim pieces. This will cover windshield side trim, T-top trim and the short roof trim behind the T-tops. Yes, my Z is dirty. I'm in the process of thoroughly cleaning it, so please no comments on that.
To start with I'll go [read more]
Wiring Harness
I noticed a lack of specific directions on what to do with wiring when converting to manual. I keep seeing post saying that you need to change the alternator harness. This is not necessary. The only difference at the transmission end is that the manual harness has a back-up lamp switch, and a neutral switch connector.
Reverse Lights
The [read more]