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Thread: 47 Knucklehead broken front motor mounts

  1. #11
    Join Date
    Jun 2001
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    Central Illinois, USA
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    Quote Originally Posted by larry View Post
    Aluminum, no?
    Come to think of it, Larry,...

    I have a hard time with those pics too.

    But if the motormount ears on Knuckleheads were aluminum, I never could have fixed any.

    Is that the center bolt flange to the rocker cover?

    ....Cotten
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    Last edited by T. Cotten; 10-24-2019 at 06:03 PM.
    AMCA #776
    Dumpster Diver's Motto: Seek,... and Ye Shall Find!

  2. #12
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    Aug 2004
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    Beautiful Northern New Mexico
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    He is talking front case mounting holes, and yes, they are aluminum.
    Robbie Knight Amca #2736

  3. #13
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    I should have stood on my head.

    ....Cotten
    AMCA #776
    Dumpster Diver's Motto: Seek,... and Ye Shall Find!

  4. #14
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    Jan 2006
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    Menomonie, WI
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    Eric

    Not in Ohio but I have used Advanced Cycle Machining in Superior, Wisconsin a few times and had really good experience. 715 392-5795. Quick turn around too. Dan is thinking about retiring so like Cotton says get it done now. I am trying to break in a couple of younger guys but they are not ready yet. Lord knows I have enough busted up cases for them to practice on.

    Jerry


    Quote Originally Posted by underwel View Post
    Good Morning,
    I have a 47 FL Knucklehead engine with both front motor mounts missing some chunks. Does anyone know a shop in Ohio that could repair these?
    Thanks,
    Eric

  5. #15
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    Jun 2001
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    Jump on it, Eric!

    (Meanwhile,..
    Anybody notice something peculiar about my rockerbox?)

    ...Cotten
    Last edited by T. Cotten; 10-26-2019 at 06:43 PM.
    AMCA #776
    Dumpster Diver's Motto: Seek,... and Ye Shall Find!

  6. #16
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    (Meanwhile,..
    Anybody notice something peculiar about my rockerbox?)
    Nah, Looks like all the rest with no fittings....
    Robbie Knight Amca #2736

  7. #17
    Join Date
    Aug 2014
    Location
    Ohio
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    Thanks everyone for all the comments. I contacted Roeder (about 2 hour drive from me), they said they could do it. Hoping to take the engine up there in December.

  8. #18
    Join Date
    Nov 2010
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    Eric; When you get your cases back from the welder/machinist, bolt the cases together with the top left case bolt and 1 or 2 of the aligning studs on the rear. Then set the empty cases in your frame and bolt the rear mount to the frame as if you were bolting the engine in for good. Then take a feeler gauge and slip it in between your front motor mounts on the motor and the frame. This will let you know if you need any shims and what size shims to place in between the motor and frame. Any difference between the frame and front motor mounts is usually what causes the front mounts to break.
    Craig

  9. #19
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    Jun 2015
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    Quote Originally Posted by 41craig View Post
    This will let you know if you need any shims and what size shims to place in between the motor and frame. Any difference between the frame and front motor mounts is usually what causes the front mounts to break.
    Craig
    Excellent advice Craig.

  10. #20
    Join Date
    Aug 2014
    Location
    Ohio
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    Quote Originally Posted by 41craig View Post
    Eric; When you get your cases back from the welder/machinist, bolt the cases together with the top left case bolt and 1 or 2 of the aligning studs on the rear. Then set the empty cases in your frame and bolt the rear mount to the frame as if you were bolting the engine in for good. Then take a feeler gauge and slip it in between your front motor mounts on the motor and the frame. This will let you know if you need any shims and what size shims to place in between the motor and frame. Any difference between the frame and front motor mounts is usually what causes the front mounts to break.
    Craig
    Thanks so much for the advice!

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