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Message: [QUOTE="whenfoxforks-ruled, post: 1370340, member: 73147"] If the crank has the plastic fillers in it, they go as a first sign of the big end bearing going out. I would have concern why the 1 main bearing stuck to the crank, the case bore should have held it. Unless,, you did not drive against any inner bearing races to disassemble did you? Check the bore that bearing came out of, and use some loctite bearing seal, if its still good. Replace the main bearings and seal for sure at this point. Check the thrust washer clearance on the big end bearing, inspect the cage and pins with a magnifier. Or for peace of mind, and a known sound engine, get the crank fixed/replaced. Vintage Bob [/QUOTE]