Home THE TRIALS CAR Engine by Grant Campbell

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Back End

Brakes

Engine

Front End

Front End 2

Frame

Fuel tank

Steering

Tyres

Wheels

Other cars

The Trials Car engine is a 1600cc VW, runs no cooling, headers, Minnow Fish carburettor, Single port heads, 10.5:1 compression ratio, mild porting around the inlet ports, Piranha Electronic Ignition, 5.2kg flywheel, Ceramic clutch and long advance curve in the distributor.

Although VW engines are probably all past their use-by date, the best thing about them is their light weight. At 65kg all up it is much lighter than any Jap engine I've come across. Sometimes it is an advantage to have a relatively high engine, as a bit of weight transfer can help. In the main a low centre of gravity helps handling though and although I envy the 130 hp of the Toyota 4AG I've yet to be beaten by one on a long term basis.

These ceramic clutch plates are almost a necessity. The pucks are made from ceramic material with a high copper content. They last a lot longer than ordinary ones and are easy to reline. They are also quite driveable. I understand they are not supposed to be slipped much, should be either in or out, but they seem to put up with a lot of heat anyway. I use a standard pressure plate. Back