Crankshaft bearing scored

NJDan

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Dec 25, 2021
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I tried cleaning up the bearing but I think the black marks are possibly from carbonized oil rather than from the gasket. This thing was running near 6000 rpm for short periods while I still had the bad governor. It's hard to say but scrubbing made very little improvement. I am using a brand new crankshaft so I decided just to get another connecting rod instead of risking damage to the new crankshaft. Hopefully that will fix it. If not, I'll be back! I did pick up a tube of MotoSeal and it looks like a better product than what I was using.

Edit: Just to conclude this thread I did put in the new connecting rod and the problem went away.
 
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