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Feature car 9: mk1 turbo street-sleeper

Forum regular Steve, aka 'mk1' has built his very own 1/4 mile monster. Doing it's best to look like a standard mars red mark 1, it hides some serious horsepower.



Steve writes:

"The car was originally an unsuspecting and totally original 1983 golf GTI 1800. After running the car around for the summer, the dreaded oil buzzer and light started to come on when the engine was hot. Not content with doing the usual repairs to freshen up the engine and look for more power, it was decided to have a more interesting solution. A turbo and manifold from a TDI Passat was found in a local scrap yard, this was modified to fit the engine with a small intercooler from a Saab 900. This setup worked quite well with lots of torque but more power was wanted.

In the late summer of 2003, a 2000cc 16v engine was sourced and stripped down for a rebuild, no major faults were found so the pistons were modified for boost and the engine was rebuilt with new bearings and rings. The head was stripped down and had a light skim to make sure it was flat, the valves were lapped in and new stem seals fitted. The engine was fitted with a 16v clutch and mated to the 8v box. I made an exhaust manifold from stainless steel and fitted a Garrett T3 turbo from a Volvo, the exhaust is a modified Mongoose system with the centre box removed. There is a large front mounted intercooler and the fuel system was the motronic from the donor car. This setup made 207 at the flywheel and best quarter mile was 13.96 seconds. The car remained basically unchanged until the autumn of 2004 when a failing gearbox and the third clutch starting to slip prompted some drastic action.
The O2O gearbox was removed and a lightened G60 flywheel was fitted with a VR6 clutch, a O2A gearbox from a 16v Corrado was fitted with the cable shift linkage and a cable clutch conversion, 100mm inner cv joints were fitted to strengthen up the drive shafts.
While the gearbox conversion was going on I removed the motronic fuel injection system and built a Mega squirt kit. This is a self-assembly programmable engine management ecu, which handles fuel and spark. I fitted a larger inlet manifold from a KR engine which was modified to fit efi injectors and a fuel rail, an adjustable fuel pressure regulator was fitted to give flexibility and a Volvo throttle body for the potentiometer which the ecu needed for fuel calculation.

The gearbox is out again and stripped down for a limited slip differential installation, will the car ever be finished?"

jv, 28/03/2005


   

 

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