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Downside to open pcv valve

Discussion in 'Turbo Tech Questions' started by 1lowtoy, Nov 5, 2014.

  1. 1lowtoy

    Joined:
    Jul 29, 2003
    Is the only down side to venting the pcv valve out in the open the smell? I have seen many treads on if people think you should or shouldn't do it but I'm looking for any side affects. I have no problem with the smell if any.
     
    1lowtoy, Nov 5, 2014
    #1

  2. M&M Turbochargers

    Joined:
    Jan 31, 2011
    iirc the pvc is to vent the block via vacuum , to help with condensation in the block
     
    M&M Turbochargers, Nov 6, 2014
    #2

  3. TTF/Ken Staff Member

    Joined:
    Dec 31, 2011
    X2. Engine life went up when PVCs were first introduced. They keep water and combustion by-products from building up in the oil. Personally I am not a fan of simply venting to atmosphere. Air pollution issues aside (that's a whole different debate that people can get rile about), I don't relish the idea of giving water an easy path to condense in the engine as it cools down.
     
    TTF/Ken, Nov 6, 2014
    #3

  4. Jeremy

    Joined:
    Jun 6, 2005
    oops double post.
     
    Jeremy, Nov 7, 2014
    #4

  5. Jeremy

    Joined:
    Jun 6, 2005
    Everyone has a different preference and you can talk all day about pros and cons from one guy to the next. I have been running open systems with breathers for the past 15 years and have nothing negative to report, its cheap and easy for me

    My thoughts, for a boosted motor all that pressure does a really good job at keeping the rings sealed so any blowby I want to be able to easily escape. On a bigger displacement na motor, there are proven benefits to vacuum in the crankcase for sure.
     
    Jeremy, Nov 7, 2014
    #5
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