Dowel pin in the crank
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Dowel pin in the crank

  1. #1
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    Default Dowel pin in the crank

    Anybody (not run) a dowel pin in there crank to the flex/fly wheel PTO, thinking about not putting one in and going commando any reason I need one,,,,
    Slinging Lead on and off the water for over 40 YRS

    82 18' Crusader Tunnel SOLD ,
    00 23' Mako 232 fish killer,SOLD
    78 19' Eliminator Daytona SOLD
    16 19' Predator/Cheyenne

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  3. #2
    Senior Member Quit Yer Bitchin's Avatar
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    I think it's there to make sure the flex plate only goes on one way. The flex plate has weights on it to balance the crank. Long as the flex plate gets put on in the correct position I can't imagine it causing any problems.

  4. #3
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    Default Alignment dowel...

    Quote Originally Posted by Quit Yer Bitchin View Post
    I think it's there to make sure the flex plate only goes on one way. The flex plate has weights on it to balance the crank. Long as the flex plate gets put on in the correct position I can't imagine it causing any problems.
    Not all, in fact very few, flexplates have added weights for balance purposes. Internal balance engines do not require additional weights "outside" the engine... Most flexplates have minor balance corrections made with drill plunges, (not through holes). As far as being "needed" in a marine application I would say No, the dowel in the flywheel is not necessary as long as the plate, or flywheel is installed/clocked correctly.

    NOTE: If the crank was balanced without the dowel, leave it out... If it's still in there, and was there during the balance operation, leave it in...
    Ray
    LOUD BOATS SAVE LIVES

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  6. #4
    Senior Member Quit Yer Bitchin's Avatar
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    I was trying to remember the flex plate on the BBC I'm putting together right now. I installed it last week and thought I remember seeing weights on it. Some engines are considered internally balanced and can still have weights on the flex plate, hence the L98 Chevrolet 350.

  7. #5
    Some guy obnoxious001's Avatar
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    The most important point has already been mentioned, it will change balance a bit.

    It's also handy for lining up the bolt holes.

  8. #6
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    Mine was balanced without the dowel so thats the way it will be ran,good to have input from you guys ,,,
    Slinging Lead on and off the water for over 40 YRS

    82 18' Crusader Tunnel SOLD ,
    00 23' Mako 232 fish killer,SOLD
    78 19' Eliminator Daytona SOLD
    16 19' Predator/Cheyenne

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