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Shovelhead motor question . . .

Discussion in 'Motorcycle Tech Talk' started by joshbob, Dec 31, 2010.

  1. joshbob

    joshbob Well-Known Member

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    Let me say right off that I have the service manual for my '77 shovel motor. Can't figure out if the shovel motor has a crankcase breather or not. I do see one threaded hole just to the left of the oil pump that might be where the chain oiler goes. Otherwise no obvious place for a breather hose to connect to. Does anyone know how this engine breathes and how to set it up . . . ?
    joshbob, Dec 31, 2010
    #1
  3. Lucifer

    Lucifer Well-Known Member

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    [​IMG]

    [​IMG]

    Hope these help
    Last edited: Jan 1, 2011
    Lucifer, Jan 1, 2011
    #2
  4. chucktx

    chucktx Moderator Staff Member

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    great post lucifer...........thanks!!

    gonna try to put this in the tech section......
    chucktx, Jan 1, 2011
    #3
  5. joshbob

    joshbob Well-Known Member

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    Many thanks, Lucifer! The threaded hole I was wondering about does indeed turn out to be the crankcase breather. The top photo shows an oil pump like mine (stock) with the return & feed coming off the top of the oil pump.
    joshbob, Jan 1, 2011
    #4
  6. cowboy

    cowboy Moderator Staff Member

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    Yes thanks for the good info :D
    cowboy, Jan 1, 2011
    #5
  7. Lucifer

    Lucifer Well-Known Member

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    Here's the link I got it from... Some other good tech tips from them....Truett & Osborn Tech Tips

    Tech Tips
    Lucifer, Jan 2, 2011
    #6
  8. sarge7

    sarge7 New Member

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    Good info on that site - the write up on the shovel head engine is right on the money - probably why HD stopped makin it - they was wasn't gettin enough money back on repairs since every back yard mech could do his own work. Guess thats one reason I liked mine so much. :)
    sarge7, Jan 2, 2011
    #7
  9. joshbob

    joshbob Well-Known Member

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    That's good to know!
    joshbob, Jan 2, 2011
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