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Oil ventilation

Posted by BLACK'98DSM, Aug 15, 2019

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  1. BLACK'98DSM

    BLACK'98DSM Proven Member

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    Does the intake pull from the valve cover? Or does the valve cover pull from the intake?

    Image:
     

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  2. kanusky1990

    kanusky1990 Proven Member

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    The vacuum from the intake pulls the water vapor, blow by, etc out of the crankcase from the valve cover.
     
  3. silvreclips

    silvreclips Proven Member

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    And fresh air is brought in through that line that connects to the intake. When you are WOT and there is no vacuum in the intake manifold, some blowby can vent to the intake and get sucked in if it needs to.
     

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  4. ThunderChild

    ThunderChild Supporting VIP

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    Correct, under certain conditions the fresh air line going to the intake tube "reverses", either letting fresh, filtered air through the VC toward the intake manifold, or under low vacuum/boost conditions it will pull from that line into the intake tract, as the pcv will close during those conditions.
     

    Street Build 298  3

    1990 Plymouth Laser N/T
    fwd · manual · 1G DSM

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    1987 Toyota Pickup/Hilux
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    1997 Mitsubishi Eclipse Spyder GST
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  5. Lucky13

    Lucky13 Supporting Member

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  6. BLACK'98DSM

    BLACK'98DSM Proven Member

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    Thanks guys. Helpful as usual.

    I was mainly asking because I was just gonna throw a microfilter on there and get that hose out of the way. But I guess it's there for a reason. Therefore, I shall leave it alone.
     

    Road Race Build 2K  24

    1998 Mitsubishi Eclipse N/T
    fwd · manual · 2G DSM

    472  5

    2012 Murray Explorer Dune
    rwd · automatic · Misc Vehicles

    366  4

    2009 Troy Bilt Bronco
    rwd · automatic · Misc Vehicles
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  7. Jay_gst97

    Jay_gst97 Probationary Member

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    U can always add a catch can system the link that lucky put up has some good info on it
     

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  8. BLACK'98DSM

    BLACK'98DSM Proven Member

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    I thought about doing that. But I'm not packing tons of boost like some of these guys so that's something to worry about farther down the road.
     

    Road Race Build 2K  24

    1998 Mitsubishi Eclipse N/T
    fwd · manual · 2G DSM

    472  5

    2012 Murray Explorer Dune
    rwd · automatic · Misc Vehicles

    366  4

    2009 Troy Bilt Bronco
    rwd · automatic · Misc Vehicles
    Loading...
  9. Jay_gst97

    Jay_gst97 Probationary Member

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    Joined Aug 15, 2019
    Ellenville, New York
    I understand I did see some guys putting a 90 deg fitting and running it closer to the VC for a cleaner look
     

    Street Build 183  1

    1997 Mitsubishi Eclipse Spyder GST
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