hi redgolf
all that is said is true.
ive had my mk2 8valve for a couple of years, replaced 1 head gasket, all the exhaust, ignition system, all the gear linkage, header tank, cam belt and power steering belt, all the brake discs and pads, various bushes on the suspension, & brand new suspension all round.
that said the car is a dream to drive.
keep tinkering and dont let it beat you.
if it is really bad you could always buy mine, it listed in the cars for sale section.

but seriously, good luck.
