Deglazed the cylinders this afternoon, thought id check the gap on the new rings I bought a few months ago. Im a bit confused, I bought these off ebay:
Listed for nissan Silvia Sunny N14 200sx S14 S15 SR20 SR20DET.
Pushed the top ring in cyl 1 with a piston to keep it square, gap measured 0.46mm didnt think much of it, did the rest all measuring the same, popped ring 2 in and that measured 0.70mm, this one made me think wtf! that gap looks big , grabbed my manual looked at the spec:
Imediately was worried how much material id taken off, so put my old rings in to my surprise measured inside the spec of the manual. 1st ring 0.26mm 2nd ring 0.45mm.. I then measured the bores and its near as damn it 86mm so not been bored out.
The manual states the wear limit is 1.0mm but surely new rings should fall towards the lower spec i.e 1st ring 0.20mm.
The eBay listing states:
IMPORTANT NOTE: Please check your rings against these specs before opening the new box as we can only accept returns in "as new" condition (inner seal not broken).
Dont know where I stand with this now, I might as well put my old rings back in than use the new rings! Has anybody had any experience with this problem?