boonman Posted January 15, 2004 Report Share Posted January 15, 2004 You have a wierd situation. But, you should not be running race fuel, not on the risk of crank seperation, but because you don't have to. Your motor will get greater performance by running the lowest octane that it can tolerate without detonation. at 140 PSI and 21 cc domes, you do not need it. ANyways, I would fear crank seperation on a stock shee. It does happen. What do you mean by the right cylinder having more play. What has more play? The piston? The upper rod bearing? What? Quote Link to comment Share on other sites More sharing options...
BansheeBrian Posted January 15, 2004 Author Report Share Posted January 15, 2004 Moving the piston side to side in the cylinder. I may have to hit off the search and find out how to do a leakdown test to see if I have a crank seal problem.I still stare at that red plug and wonder. Quote Link to comment Share on other sites More sharing options...
Banchetta Posted January 15, 2004 Report Share Posted January 15, 2004 Sounds like the sand got in there and wore your rings out. That'd explain the side to side play and compression lost......still have to figure out the red color though... Quote Link to comment Share on other sites More sharing options...
DUNEDEMON Posted January 15, 2004 Report Share Posted January 15, 2004 With the tear in your carb boot chances are very good that the RH cyl was way lean, could've stuck a ring. Lean = hot, could also explain the absence of paint in the RH exhaust port, was the top of the RH piston very clean and almost pitted looking? Sounds like it may be time to break open the piggy bank...Good luck. Dunedemon. Quote Link to comment Share on other sites More sharing options...
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