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Thread: oil tank vent

  1. #1
    Member, Human Race wit61's Avatar
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    Jan 2003
    Pennsylvania, Northeast

    oil tank vent

    For those of you with K&N conversions for your carbs, what did you do with the oil tank vent hose ?
    70 911T Targa
    70 911E
    73 914

    If you go flying back through time and you see somebody else flying forward into the future, it's probably best to avoid eye contact....

  2. #2
    The easy way is to clamp a K&N type oil breather cap onto the end of the hose or just shove the breather hose into a plastic juice bottle.

    The better way (I think) is to direct blowby and oil vapor into an intermediate catch can to separate the oil, then plumb the fumes into the air intake. K&N housings have a inlet port for this purpose. You can get fancy and use spun alumimum catch cans. There are also polyethylene containers for such purposes. See Summit Racing. I used a Pik-a-Part windshield washer reservoir and attached it to the system with PCV hose and grommets (from the auto parts store). A nice touch is a drain valve to recapture the separated oil.


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