Originally Posted by
chaffe
Dont re drill the head on the zetec, ive done it before, its not thickenough in places, even with helicoils, and the oil always seeps out, burning on the exhaust and running down the head. It annoyed me soo much i changed the head and bought an adaptor plate.
My old zetec turbo engine had a drilled head for this and I never had a problem in around 9000miles driving