These collection of articles are all written in house unless otherwise noted. They have been written to be the most unbiased and accurate as possible. Mistakes and mis-information are inevitable so if anything incorrect is found then please send a message. Contributions are welcome as are suggestions for further articles. Click on the contact tab to do so. Click on each icon to read the individual articles.
Note: Many articles are still being written/edited/uploaded. It takes an obscene amount of work to put together a site like this one so it will take time.
Workshop Manuals, General Information & Wiring Diagrams
Included here is a collection of various diagrams and workshop manuals for various models. There…
3SGE Beams conversion guide
An increasingly common conversion is to fit a 3SGE Beams engine into a Corolla or…
20V 4AGE Engines and Aftermarket ECU’s
Covering some of the common and smaller pieces of information covering the interfacing of aftermarket…
Installing a Hyundai radiator into an AE86
With many original sprinter radiators reaching their limit in age and cooling capacity owners often…
Calculating Compression Ratios
Many changes to the components or state of some parts in an engine will affect…
4AGE Compression Ratio Chart
This chart shows the theoretical resultant static compression ratios before and after certain modifications. As…
Interchangeable Wheel Studs
The standard wheel stud on a AE86/AE71/KE 70 is a 12mm with a 1.5mm thread…
Multi-link Rear Suspension Tuning
Despite the visual simplicity of a solid rear axle there is a huge amount of…
Differences between Silver and Blacktop 20V 4AGE Engines
This is a guide for making a educated comparison between the 20V Silvertop and Blacktop…
Toyota A series Flywheels
This is a listing of which flywheels where originally matched to the A series of…
Working with the VVT on a 4AGE 20V Engine
When Toyota went to the 20 valve engine from the 16V it introduced the first…
Coilpack Information Guide
Working with coilpacks This article is about use of coilpacks also known as COP's (Coil…
Intake Tuning Guide for Multiple Throttles
For people with multiple throttles the intake system length is somewhat easily changed in length…
20V RWD Conversion Parts List
Many times we have been asked "do you guys sell a complete conversion kit to…
Converting a 4AGE 20V to Rear Wheel Drive
20 Valve engine is increasing in popularity as the choice of engine in rear wheel…
Spigot Bearings
All about the use and service of a spigot bearing in a Toyota A series…
Relay Upgrade for a Starter Motor
If your car has a good battery but still makes a clicking sound instead of…
Additional J160 conversion and modification information
The Toyota J160 / Aisin AZ6 gearboxes are lightweight but yet are still quite strong…
J160 gearbox conversion guide
Using various components supplied from our business it's quite straightforward to convert a vehicle with…
R31 Diff into AE86 Conversion
A fairly common upgrade for RWD Toyota owners is to fit the differential from an…