Quote:
Originally Posted by ponjohn
How can spun bearings lock it up?
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Babbitt gets hot enough to move around the shell and builds up and grabs the crank. Swapping an upper and lower shell where the lower doesn't have the oil hole can cause the mayhem. Except most bearing companies seem to use a pair of thrust bearings with holes in both shells now. Or too tight of clearances will cause the same result - maybe placing the cap on backwards ate up the thrust clearance?