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Looks like overloading damage to me, like the babbit de-laminated from the shell, rather than melting from no oil. Could explain the non-damaged crank throws.



Curious on the bearings, did both the upper and the lower shells in the rods have the same damage? Or was it just the uppers?


yes both upper and lower had the same damage.

i will be takeing two cranks to get polished today and i will take the two head that look good
and have them check out and surfaced if needed, with prusse test done

owned a few .. current 86 rustbucket 2.5td . manual hubs