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S&S oil breathing

Discussion in 'Motorcycle Tech Talk' started by maurice4909, Apr 23, 2013.

  1. maurice4909

    maurice4909 New Member

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    Location:
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    Greatings All,
    Frist time here.
    Got a question about oil breathing on my S&S 107.
    Little info on the motor.
    Lower end, and jugs are 1991, with case vent. Top is 2011 S&S 4" heads with breathers.
    Motor has been completly rebuilt. Have about 600 miles on it.
    Right now I am using the case vent plumbed into a EBOC. With the head
    breathers plugged with solid bolts for carb mount. Getting a bit of oil
    in the collector, specialy right after start up.
    Is this set up good enough for venting.? Should I vent from the heads? The case? Or both?
    Thanks.
  2. Lucifer

    Lucifer Well-Known Member

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  3. baggerpaul

    baggerpaul Well-Known Member

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    Pull a bolt start it and see if there is a lot of pressure being exhausted ? Then compare the pressure coming from the case if the head breathers feel stronger .vent pressure from the strongest point . The motors not going to care from were its vented as long as it can realease its pressure.
  4. maurice4909

    maurice4909 New Member

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    Thanks Lucifer, n BP,
    The ball seal was checked at time of assem. very good seal there.
    Thanks for the link. Helped with desiding about going with both head and
    bottom breathing. Will help this rebuilt motor breath.
    I have noticed that the more miles I ride it, there is less of an oil problem.
    Now gotta resolve a carb issu.
    Thanks

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