Quote:
Originally Posted by 400 Lemans
I think the rings broke when you knocked the pistons out and the top ridge on the cylinders was a little to big. The rings grabbed on the edge of it. Sometimes you have to use a ridge reamer when possibly reusing the same pistons.
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I completely agree that the ridge is likely the cause of the broken rings.
To my way of thinking, a ridge-reamer is a tool for destroying cylinder walls. It's really easy to get too aggressive and carve too deeply. In my world, the pistons get knocked-out and thrown in the scrap-metal bin if they're damaged by the ridge. I let the boring-bar deal with the ridge.
MOST OEM pistons are not worth saving--they're heavy, they're cast to be cheap, they're maybe not shaped properly for optimal compression and flame travel...modern pistons can be so much better than what came in the engine to begin with.