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Can turbo pressurize oil pan

Discussion in 'Turbo Tech Questions' started by outlaw95, Nov 8, 2010.

  1. outlaw95

    Joined:
    Dec 7, 2009
    We are getting allot of blow by on our engine, leak down show 1-2% max. It is an older 101mm Innovative turbo just wondering if seals are bad
    can it pressurize the return line to pan? We have (2) #12 lines going to catch can but no vacuum pump. Thanks
     
    outlaw95, Nov 8, 2010
    #1

  2. wantabe

    Joined:
    Oct 12, 2010
    what piston rings you got ?
    ductile iron rings if detinated , will lose there tension, therefore allowing more blow by..

    you sure u only got 1-2 % leak ? thats extremly good

    no, the turbo cannot directly pressurize the sump
     
    wantabe, Nov 9, 2010
    #2

  3. 7SEC_SN95

    Joined:
    Feb 26, 2005
    Yes, a turbo can pressurize the crankcase via the drain if there is an issue with it. Just pull the drain line and shoot it into a 5 gallon pail and start it up.
     
    7SEC_SN95, Nov 9, 2010
    #3

  4. wantabe

    Joined:
    Oct 12, 2010
    maybe i comprehened that question wrong.. :)
    lol
     
    wantabe, Nov 9, 2010
    #4

  5. outlaw95

    Joined:
    Dec 7, 2009
    Running total seal rings, we have checked it a couple times with engine hot and shows 1-2%.
     
    outlaw95, Nov 9, 2010
    #5

  6. wantabe

    Joined:
    Oct 12, 2010
    they would be a moly total seal ?
     
    wantabe, Nov 9, 2010
    #6

  7. wantabe

    Joined:
    Oct 12, 2010
    how much is alot ?
    any video ?

    mine breaths like a steam train, but maybe because its got 36 psi on board...
     
    wantabe, Nov 9, 2010
    #7

  8. svojohn

    Joined:
    Apr 16, 2007
    I guess it's possible. Disconnect the oil return line. Use a air compressor and pressurize the intake system starting at the turbo inlet. Regulate the air pressure to around 20 psi or whatever your comfortable with. Do you feel any air leaking out of the oil return?
     
    svojohn, Nov 9, 2010
    #8

  9. outlaw95

    Joined:
    Dec 7, 2009
    It filled up the overflow can (1 qt) in couple passes. Running only 14psi
     
    outlaw95, Nov 10, 2010
    #9

  10. 302f150

    Joined:
    Mar 6, 2007
    You have two# 12 lines coming off your valve covers to a catch can?? Any vacuum lines going to it? Any pics?
     
    302f150, Nov 10, 2010
    #10

  11. wantabe

    Joined:
    Oct 12, 2010
    maybe you have a baffle issue, and the oil controll in the tappet cover ?

    you tried pulling crankcase gas from intake valley ??
     
    wantabe, Nov 10, 2010
    #11
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