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The 4AGE and 3SGE specialists
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TECHNICAL ARTICLES

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 & WIRING DIAGRAMS

Here you can find the wiring diagrams and workshop manuals for popular toyota engines such as 16V/20V 4AGE, 3SGE BEAMS, 3SGTE and more.

4AGE 20V RWD Conversion Guide

From the basics to the finer details; a guide on the various changes that need to be made to a 20V engine to convert it into rear wheel drive form.

COILPACK INFO GUIDE

The connection, fitment and use of Toyota's plug on coils.

J160 conversion and modification guide

Covered here is some general information on their specifications and also conversion and upgrade information.

SKYLINE R31 DIFF CONVERSION

Tips and tricks in fitting a Skyline solid diff to other cars.

3SGE Beams conversion guide

A collection of information to help those undertake an engine conversion for the 3SGE beams engine

WORKING WITH THE VVT

All about the Variable valve timing that comes with the 4age 20V engine. Covers use with an aftermarket ECU, tuning, removal, etc..

SPIGOT BEARINGS

Working with Spigot bearings on Toyota AE and KE models. A simple article about what type, the install, removal, etc..

TOYOTA A SERIES FLYWHEELS

A chart of flywheel specifications for 4A and 7A engines.

INTAKE TUNING GUIDE FOR MULTIPLE THROTTLES

A broad article from theoretical principals to filtrations and much in between.

SILVER & BLACKTOP 20V DIFFERENCES

An article showing the main changes between the earlier 4AGE 20v Silvertop and the later Blacktop engine.

MULTI-LINK REAR SUSPENSION TUNING

Theory and practice of adjusting the multi-link rear suspension arms and mounting points. Also covers aftermarket parts available for the purpose.

RELAY UPGRADE FOR A STARTER MOTOR

If your car has a good battery but still makes a clicking sound instead of starting then chances are you need to do this simple upgrade.

INTERCHANGEABLE WHEEL STUDS

Wheel studs available aftermarket or from other models that can be interchanged with the original Toyotas studs to change their length.

4AGE COMPRESSION RATIO CHART

A chart of the resulting static compression ratios with various 4A and 7A engine piston/head/crank combinations.

CALCULATING COMPRESSION RATIOS

A chart of the resulting static compression ratios with various 4A and 7A engine piston/head/crank combinations.

INSTALLING A HYUNDAI RADIATOR INTO AN AE86

A pictorial guide on how a Hyundai Excel radiator can be installed into an AE86 with a 4ac engine. It can however be applied to other models directly like a KE70 or AE71.

20V 4AGE ENGINES AND AFTERMARKET ECU'S

Brief information on running a 20V 4age with an aftermarket ECU.