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  1. #1
    Mike xsockguyx's Avatar
    Join Date
    Sep 2007

    Another timing broke on 701 61x

    Before I send my 701 crank to crankworks to be inspected because it keeps breaking timing keys. Could a flywheel also cause of timing key to break? I'm just going through my option before i tear down this motor over such an annoying issue.

  2. #2
    Stop staring at my tits NJJer's Avatar
    Join Date
    Jul 2008
    This house or that house
    Take some valve grinding compound and lap the flywheel to the mating surface on the crank.

    Once you have a good overall mating surface, try it again with a new key.

    If it breaks then, you got a major problem. We use to run micro-stock car engines with no keys, just a lapped flywheel/crank snout and the flywheel never moved. Think taper in a Bridgeport VMC.

    If you still need help, let me know and I will look at it in person.

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