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Old 06-28-2012, 09:34 PM   #11
texasadv OP
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Joined: Mar 2008
Oddometer: 36
update - uh oh

I removed the cylinder and found significant wear! This was freshly bored! The wear is only on the intake and exhaust port sides of the cylinder. The piston shows very very faint marks on the skirts. This leads me to think the rings are what are wearing on the cylinder walls. I checked the ring end gap and the seem in spec. It makes me wonder if the cylinder isnt really round. I cant tell with my digital caliper. The wear is only after a handful of starts (it doesnt idle) and the one time I did actually have it idling (with very minimal throttle). I cant feel the scratches with my fingernail so theyre not deep. Thoughts?

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