My 657 ate a ring and I have cleaned out the bottom end with suction and flushed it however I have concerns it's more likely that it blew the ring pieces out the exhaust. I have found no trace of the upper ring anywhere. I can see down through the crankshaft to the bottom there's no remaining gas or oil and flushing it doesn't produce anything. What's the likelihood that any part of that ring could still be down there how much space is there? I don't think it could go further than under the crank on that side due to the crank bearings?
The attached pic is a reference (not mine). I don't see how the ring could be anywhere else if no pieces are under the crank that the issue occurred. Seems most likely the entire top ring, in however many pieces it went out, blew out clean (wasn't found anywhere in the expansion, muffler, exhaust tube).
The attached pic is a reference (not mine). I don't see how the ring could be anywhere else if no pieces are under the crank that the issue occurred. Seems most likely the entire top ring, in however many pieces it went out, blew out clean (wasn't found anywhere in the expansion, muffler, exhaust tube).
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