need driveline install help
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need driveline install help

  1. #1
    Broke Member monstertahiti78's Avatar
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    Default need driveline install help

    Hey guys I'm trying to mount my engine in the boat but I'm not sure if there is too much angle in the driveline. Can anyone give me some advice on this?
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    MPR FAB southwind011's Avatar
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    You want the pump and motor parallel but at different hight to get a 2 deg angle on the h-bar. Looking at the pic set the motor 1/8in higher then the pump and start there. That should get to close and adjust from there. Hope this helps

  4. #3
    Senior Member jetboatperformance's Avatar
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    Way to much "kink" , the depth engagement looks OK on the yoke but the rear needs to drop an/or the front likley come up , possibly your Pan ? your not trying to use the V-drive pan you had I hope ? tom

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    Living in a cage of fear thatguy's Avatar
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    It appears that the rear of the Engine needs lowered to make the centerlines parallel, and after that possibly the entire engine lowered squarely to get the proper angle offset?

    If one of the pros could correct me if I am wrong that would be great, I don't want to do it wrong either!



    The angle showing 2* would actually be 88* the way I drew it, or 2* off of 90*.

    The actual 2* would off of the centerline.
    Last edited by thatguy; 03-08-2012 at 02:26 PM.
    Tommy
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    Senior Member H20MOFO's Avatar
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    And I could be wrong... but it looks like the front of the motor needs to come way up...from this side of my computer screen.
    Another Hot Boat refugee

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    Not trying to stir anything up but technically the angle between the H-bar and the crank and the H-bar and the pump shaft need to be the same. See attached picture. The pump shaft and the engine crank do not have to be parallel. It is the angles to the H-bar that have to be the same. 1 1/2 degrees is good rule of thumb. Some boats will have a little more and some a little less. 3 degrees is getting pretty high and you would want at least 1/2 degree. Good luck.
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    Sorry about posting the picture upside down. Guess that is the way I am most of the time. The concept is the same in any case.

  10. #8
    MPR FAB southwind011's Avatar
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    The motor should be set a 4 deg Angel to be parallel with the pump shaft

  11. #9
    tintingsandiego krusn56's Avatar
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    Mine is at 4...
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  12. #10
    ATM
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    In a perfect set-up the pumpshaft and crankshaft would be parallel but, offset .060-.080".
    Ron

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  13. #11
    MPR FAB southwind011's Avatar
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    Quote Originally Posted by ATM View Post
    In a perfect set-up the pumpshaft and crankshaft would be parallel but, offset .060-.080". Ron
    Wouldn't the offset vary with driveline length?

  14. #12
    Senior Member jetboatperformance's Avatar
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    Quote Originally Posted by monstertahiti78 View Post
    Hey guys I'm trying to mount my engine in the boat but I'm not sure if there is too much angle in the driveline. Can anyone give me some advice on this?
    You get this figured out yet Monster ?

  15. #13
    Living in a cage of fear thatguy's Avatar
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    Quote Originally Posted by southwind011 View Post
    Wouldn't the offset vary with driveline length?
    Yes, the length of tangent would dictate this.
    Tommy
    Quote Originally Posted by Rexone View Post
    Tommy please remove all Jimsplace quotes from your sig and don't put more back. He doesn't like it and it is against the rules. Thank you.
    "So as through a glass, and darkly
    The age long strife I see
    Where I fought in many guises,
    Many names, but always me."

    Gen. George S Patton

  16. #14
    Living in a cage of fear thatguy's Avatar
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    Quote Originally Posted by fastmarlene View Post
    Not trying to stir anything up but technically the angle between the H-bar and the crank and the H-bar and the pump shaft need to be the same. See attached picture. The pump shaft and the engine crank do not have to be parallel. It is the angles to the H-bar that have to be the same. 1 1/2 degrees is good rule of thumb. Some boats will have a little more and some a little less. 3 degrees is getting pretty high and you would want at least 1/2 degree. Good luck.
    That is interesting, I never knew that.
    Why is that anyway?
    Does it create vibration or something if they are not parallel or equal angles?
    Tommy
    Quote Originally Posted by Rexone View Post
    Tommy please remove all Jimsplace quotes from your sig and don't put more back. He doesn't like it and it is against the rules. Thank you.
    "So as through a glass, and darkly
    The age long strife I see
    Where I fought in many guises,
    Many names, but always me."

    Gen. George S Patton

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