Re: ’58 Big Twin Lower Crank Seal

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February 12, 2017 at 4:32 am #52866
Mumbles
Participant

    It shouldn’t be a problem as they all use the same carbon seal. The quad seal had to be an upgrade as it is similar to a double lipped oil seal and has two sealing surfaces in contact with the crankshaft instead of one, like on an O ring.