Crankshaft Runout Question

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Northracing
Posts: 12
Joined: Thu Aug 31, 2023 5:26 pm

Re: Crankshaft Runout Question

Postby Northracing » Fri Dec 19, 2025 4:28 pm

An update, I managed to true a crank before disassembling it and got it to a good spec - took many hours.

I disassembled the crank and no surprises, but unfortunately some light scoring on the timing side pin bore - the crank had been rebuilt in the past, the pin was clearly aftermarket. Good interference fit with new pin and bores according to my measurements.

Still have some cleaning to do, as well as clean out the sludge trap.

Question, how best to dress the scoring on the timing side pin bore?

Thank you.
Derek :shock:


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