Is my piston/rings worn out?

bluefire808 · 04-20-2015, 11:03 PM

This is 3 pics of the whole outside of my piston for the most part. Whats ur guys opinion if its worn out? When turning my fly wheel over by hand it feels like there is almost no resistence ( compression) like when i first installed it and i could hardly turn it over with my hands.

bull · 04-24-2015, 06:26 AM

Based on your photos, I would look closely at the jug walls, also I would check the clearances (piston to cylinder. ring gap). After checking clearances, you'll know if the jug can be refinished (honed) or if everything needs replaced.

There looks like some metal transference, but it doesn't look like the skirt has damage.

It has signs of excessive blowby like the rings never seated or it was allowed to sit too much without starting and running.

04-24-2015, 06:26 AM	#2
bull Join Date: Feb 2015 Posts: 257	Based on your photos, I would look closely at the jug walls, also I would check the clearances (piston to cylinder. ring gap). After checking clearances, you'll know if the jug can be refinished (honed) or if everything needs replaced. There looks like some metal transference, but it doesn't look like the skirt has damage. It has signs of excessive blowby like the rings never seated or it was allowed to sit too much without starting and running.
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