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PeteVS · 07-01-2010, 04:40 AM

About the "ridge" at the tops of the cylinders: The way I understand it, it's kind of harmless on its own, BUT, if you rev the engine much over the RPM it's usually run, the rods will stretch a little and that will allow the top ring to hit the ridge, causing the ring to break, causing major problems. You might be able to rent a ridge reamer at reasonable cost. Good Luck!!

07-01-2010, 04:40 AM	#3
PeteVS Senior Member Join Date: May 2010 Location: FP, NJ Posts: 2,828	Re: New to the hobby, first Engine About the "ridge" at the tops of the cylinders: The way I understand it, it's kind of harmless on its own, BUT, if you rev the engine much over the RPM it's usually run, the rods will stretch a little and that will allow the top ring to hit the ridge, causing the ring to break, causing major problems. You might be able to rent a ridge reamer at reasonable cost. Good Luck!! __________________ Don't never get rid of nuthin!