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Piston size
Posted: Sat Jun 10, 2006 11:18 pm
by chrisd87
Is there any way to tell whether a piston is standard or over-sized without removing it?
Posted: Sun Jun 11, 2006 12:31 am
by rayofleamington
presuming you mean in the engine? (not brakes etc...)
there should be a number on top of the piston if it is oversize
e.g. +20 meaning 0.020" oversize
There are numbers on top of the standard piston but not +10 or 20 etc..
Posted: Sun Jun 11, 2006 9:39 am
by bmcecosse
May say 'STD' - but just measure the bore - it's the best way!
Posted: Sun Jun 11, 2006 10:26 am
by chrisd87
OK thanks - looks like I have some scraping to do then:
<img src="
http://i31.photobucket.com/albums/c390/ ... C01094.jpg" height=240 width=320>
Also, is there any way to tell if I need new rings/rebore without compression testing (silly me took the head off before doing that), as I haven't seen it running so don't know if it smokes. The pistons seem nice and tight in the bores (no movement at all) and there is no scoring evident, but there is a small amount of 'land' at the top (you can just feel a tiny ridge).
