Despite the visual simplicity of a solid rear axle there is a huge amount of scope and potential gains in the tuning of the suspension arms. This is a guide on how to alter the geometry of a multi-link solid…

This is a guide for making a educated comparison between the 20V Silvertop and Blacktop engines with a description of the difference explained. Some smaller differences are not covered and there are also some differences between the first and second…

This is a listing of which flywheels where originally matched to the A series of engines. NOTE: Note all flywheels of a similar hole count are interchangeable with each other if they physically fit within the bellhousing. Obviously an 8…

When Toyota went to the 20 valve engine from the 16V it introduced the first form of Variable valve timing (VVT) for any A series engine. It is the most simple form of variable valve timing in that it is…

Working with coilpacks This article is about use of coilpacks also known as COP's (Coil on Plug) which are common on many Toyota engines. We give thanks to Anthony  from Kaizen garage who helped with some the content that we…

For people with multiple throttles the intake system length is somewhat easily changed in length via the trumpets/air-box, this opens up the options of tuning the intake to suit the engine and driver. While this can also be done on…

Many times we have been asked "do you guys sell a complete conversion kit to make a 20V into rear wheel drive?". Due to the differing choices available pending on the customers vehicle type, budget, personal preferences and so on…

20 Valve engine is increasing in popularity as the choice of engine in rear wheel drive conversions in cars such as the AE86. However it does have some extra issues involved over a 16V in converting it to run in…

All about the use and service of a spigot bearing in a Toyota A series engine. Purpose A spigot bearing is a bearing that fits into the end of the crankshaft and locates the end of a gearbox shaft, this…