Quote:
Originally Posted by subieworx
What are the ring end gaps on the pistons you just pulled? We often see in newer factory engine builds cylinder wear of this kind on engine used for performance reasons. We find that oems are gapping the rings very tight for emissions reasons which can lead to the ring ends butting against each other then pushing outward to the cylinder walls and creating massive scoring. Seems to be what could be going on here.
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I'll measure next time I have the pistons on the bench
