1. Join the Community!

    DSMtuners is a massive archive of DSM information - but more importantly, it's a COMMUNITY! Join in and participate with other DSMers, and invite all of your DSM friends to make this place their home. Chat with others, create a build thread, post questions and answers. Get involved! Logging in will also remove many of the advertisements, along with this notice. ;)

Oil ventilation

Posted by BLACK'98DSM, Aug 15, 2019

Please Support ExtremePSI
Please Support Southbay Fuel Injectors
  1. BLACK'98DSM

    BLACK'98DSM Proven Member

    328
    84
    Joined Feb 9, 2019
    Hoover, Alabama
    Does the intake pull from the valve cover? Or does the valve cover pull from the intake?

    Image:
     

    Attached Files:

    Street Build 963  8

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

    114  6

    2009 Troy Bilt Bronco
    rwd · automatic · Misc Vehicles

    192  1

    2012 Murray Explorer Dune
    rwd · automatic · Misc Vehicles
    Loading...
  2. kanusky1990

    kanusky1990 Proven Member

    91
    10
    Joined Sep 14, 2011
    Easton, Pennsylvania
    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

    919
    90
    Joined Jul 19, 2005
    Greenville, South Carolina
    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.
     
  4. ThunderChild

    ThunderChild Supporting VIP

    2,437
    646
    Joined Jan 5, 2012
    Rathdrum, Idaho
    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 120  3

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

    239  8

    1987 Toyota Pickup/Hilux
    awd · manual · Misc Vehicles

    Street Build 752  7

    1997 Mitsubishi Eclipse Spyder GST
    fwd · manual · 2G DSM

    Street Build 953  1

    1992 Eagle Talon TSi AWD
    manual · 1G DSM

    Street Build 2K  10

    1992 Eagle Talon TSi AWD
    awd · manual · 1G DSM
    Loading...
  5. Lucky13

    Lucky13 Supporting Member

    93
    6
    Joined Nov 20, 2002
    Palm Beach Gard, Florida
  6. BLACK'98DSM

    BLACK'98DSM Proven Member

    328
    84
    Joined Feb 9, 2019
    Hoover, Alabama
    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.
     

    Street Build 963  8

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

    114  6

    2009 Troy Bilt Bronco
    rwd · automatic · Misc Vehicles

    192  1

    2012 Murray Explorer Dune
    rwd · automatic · Misc Vehicles
    Loading...
  7. Jay_gst97

    Jay_gst97 Probationary Member

    22
    6
    Joined Aug 15, 2019
    Ellenville, New York
    U can always add a catch can system the link that lucky put up has some good info on it
     

    Street Build 109  1

    1997 Mitsubishi Eclipse Spyder GST
    fwd · manual · 2G DSM
    Loading...
    BLACK'98DSM likes this.
  8. BLACK'98DSM

    BLACK'98DSM Proven Member

    328
    84
    Joined Feb 9, 2019
    Hoover, Alabama
    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.
     

    Street Build 963  8

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

    114  6

    2009 Troy Bilt Bronco
    rwd · automatic · Misc Vehicles

    192  1

    2012 Murray Explorer Dune
    rwd · automatic · Misc Vehicles
    Loading...
  9. Jay_gst97

    Jay_gst97 Probationary Member

    22
    6
    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 109  1

    1997 Mitsubishi Eclipse Spyder GST
    fwd · manual · 2G DSM
    Loading...
    BLACK'98DSM likes this.

Share This Page

Support Vendors who Support the DSM Community
Archer Fabrication ECM Tuning ExtremePSI Feal Suspension Fuel Injector Clinic Jacks Transmissions JNZ Tuning Kiggly Racing Morrison Fabrications OHM Racing RockAuto SouthBay Fuel Injectors STM Tuned VR Speed Factory WheelWell.com White Shed Speed