ive got a 2.0l zetec.
its been rebored and has +.50 pistons.
ive checked the ring gaps and they are too big according to the haynes manual.
it says 0.30 to 0.55 mm.
my ring gaps are 1.00mm.
this would suggest the bore is very slightly too big.
but what effects would this have on the running of the engine if any??