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  • oil seporator

    Any one know if i need the oil separator?
    I don't have a port on my oil pan and was going to run a catch can but since i have very little space I was wondering if i could get rid of the whole shebang and what I'd have to do hose wise??

    Thanks,
    Jake

  • #2
    you should search on this.... I know that I do not run mine... several people with the CF box have eliminated it... I am not sure that I know of folks who have removed it with a stock engine/intake but if they've done it, it's probably in the archives.
    Mark Williams
    Dallas, TX

    Nothing says "welcome to the neighborhood" like a search... oh wait... looks like they are all gone! :rastajake:

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    • #3
      This thread discusses the oil separator function and removal. This link was posted as response to another question on the SIG email list this very morning! Good timing.

      http://www.s14.net/forums/showthread.php?t=12673

      Hope it helps.
      Dominic

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      • #4
        Thanks for the reply guys.

        I've been so busy my searching for 5 minutes didn't reveal much so I appreciate the link.

        still a bit confused though (tired 4am need to sleep)

        do I run the hose from the valve cover to a catch can and put a filter on the hose from the plenum?

        sorry if I'm not making sense must sleep and try again tomorrow.

        Thanks again,
        Jake


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        Ok mark,

        I did a few more minutes of searching and its starting to make more sense.

        I really need sleep now.

        Thanks again.
        Last edited by Rally02; 05-09-2008, 12:30 AM. Reason: Automerged Doublepost

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        • #5
          Think of it this way... any air into the plenum *must* come through the AFM or else you will have an unknown amount of air heading into the cylinders. So any ports off the airbox/plenum should be plumbed very carefully or sealed up.

          So... you could do hose from cylinder head --> catch can --> plenum. That would be the most environmentally friendly way. This also still pulls a vacuum in the crankcase. Another way would be cylinder head --> catch can --> filter. Then you plug the plenum port.


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          One last thought, if you do feed the catch can back to the plenum, then you are opening a vacuum leak where the oil separator would drain back to the oil pan. You'd have to plug that connection.
          Last edited by Thor; 05-09-2008, 05:00 AM. Reason: Automerged Doublepost
          1987 Euro M3, Jet Black
          "BMW M cars: technically advanced, beautifully engineered, and the choice for total gits" -- Top Gear, Summer 2008

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          • #6
            Get a generic one or get a nice Cusco or Greddy one.
            Fully Restored 1985 Corolla GT-S
            1987 328ci SR20DET Drift Car (Will Convert to M3 Spec soon)
            1989 Honda Civic Si-R Current Project
            2002 Corolla CE Daily Driver

            www.TheTunerSource.com

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