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sbc valve cover question

Discussion in 'The Hokey Ass Message Board' started by RenoRat, Jan 12, 2006.

  1. RenoRat
    Joined: Aug 5, 2004
    Posts: 621

    RenoRat
    Member
    from Oxnard,Ca

    Ok heres the deal I swaped out stamped steel valve covers what had breathers and pvc valve in it for a set on finned no holes valve covers that I put breathers on both but .... now it seems like a lil smoke is commin outta the breathers .. the motor is a NEW crate... ???
     
  2. new2u
    Joined: Nov 22, 2005
    Posts: 157

    new2u
    Member
    from Okla

    You need a pcv valve, they pull a vacuum on the crankcase and expand the rings providing a better seal in the cylinder.
     
  3. HEATHEN
    Joined: Nov 22, 2005
    Posts: 9,059

    HEATHEN
    Member
    from SIDNEY, NY


    An open breather in one valve cover and a PCV valve in the other should make your engine happy.
     
  4. tommy
    Joined: Mar 3, 2001
    Posts: 14,756

    tommy
    Member Emeritus

    Perfectly normal. Even crate motors have blow by to some extent. Until you restore some type of system to bring fresh air into the engine and carry away the blow by fumes, they will rise up and come out at the breathers. The PCV system ****ed those fumes into the intake and burned them. Fresh air entered through the other breather. Breathers are more than just vents. There is air flow through the engine. The normal blow by was always there. The PCV valve just wisked it away before you saw it.
     
  5. RenoRat
    Joined: Aug 5, 2004
    Posts: 621

    RenoRat
    Member
    from Oxnard,Ca

    now would it work if i put the pvc valve in the iol filler tube thats in the intake?? that would make sence to me

     
  6. tommy
    Joined: Mar 3, 2001
    Posts: 14,756

    tommy
    Member Emeritus

    They make an after market breather with a PCV valve built in. Plumb it just like the one you took off. PCV on one side and a breather on the other side. It's the same deal just prettier components.
     

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