ring gaps

figo126

bought new mahle piston rings for n/a engine rebuild , but now going for b207r with z22se crank/ conrods /pistons ? will these rings need gapping for turbo use ? all z22se/z20net /b207 bores are 68mm standard , will I need to gap these for turbo use ,seem a bit sloppy when fitted to standaed z22se pistons , please help don't want to f--k it up ,,,, cheers ,,,,,,,,,,,,,

vocky

you can measure the ring gaps, insert each ring into the cylinder and using a feeler gauge measure the gap. Something like 15-18 thou" for top and 18-21 thou" for the second should be okay. Obviously they need to be about 3 thou" different, not the same for both :p

figo126

thank you very much cheers,,,,,,,,,,