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…

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. The Problem Cars normally use a power feed though the ignition switch to activate…

The Toyota J160 / Aisin AZ6 gearboxes are lightweight but yet are still quite strong and shift very well. Covered here is some general information on their specifications and also conversion and upgrade information.   Additional information NOTE: This is…

Using various components supplied from our business it's quite straightforward to convert a vehicle with a 4age / 7A engine to use a modern 6-speed J160 transmission. This is a significant upgrade over the original gearbox and is an excellent…