pee vee 1 Posted June 17, 2007 (edited) Hi all. any one know what the actual peugeot Specs are for piston ring end gaps on a xu9j4 im going by the 'book of lies' haynes... and its saying the tolerance for the top piston ring end gap is 0.2 - 0.45 mm however mine are measuring 0.5mm the 2nd ring and the oil rings are coming in just on what the book says. but the top ring is just that tiny bit over.. this is with the bores honed and everything ready to go basically Is it worth using them? Edited June 17, 2007 by pee vee Share this post Link to post Share on other sites
mickie 3 Posted June 17, 2007 being 0.05mm over it'll still work but is it going to affect is that much, i wouldnt say so Share this post Link to post Share on other sites
welshpug 1,666 Posted June 19, 2007 its common practice to go slightly bigger on competition engines so .05 mm bigger than stock should be fine Share this post Link to post Share on other sites
pee vee 1 Posted June 21, 2007 I was thinking along the same lines TBH mate. the engine is for use on the track, so it wont be getting used 'as designed' lol the 2nd ring and oil rings are fine though.. literally just the first compression ring that is tiiiny bit out of spec Share this post Link to post Share on other sites
