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valve cover breather

Discussion in 'General Tech and Maintenance' started by mozzandherb, Jun 29, 2005.

  1. mozzandherb

    mozzandherb Senior Member

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    Do valve cover breathers make much of a difference as far as power is concerned, and it damaging at all to the engine?
     
  2. hybrid89

    hybrid89 thistownsucks...

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    no
     
  3. mozzandherb

    mozzandherb Senior Member

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  4. xj0hnx

    xj0hnx I wanna be sedated VIP

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    Just keep the hose, it needs to be there to recirculate that crap back into the engine.
     
  5. pissedoffsol

    pissedoffsol RETIRED

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  6. brc80

    brc80 Senior Member

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    Someone who says they know what they are talking about told me that if the breather hose is not hooked up, it will stave the bottom end.

    Any truth to this?
     
  7. pissedoffsol

    pissedoffsol RETIRED

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    completely false. its actually WORSE for the bottom end.

    basically, you un-do the vacuum system. all the crap just stays in the head.
     
  8. brc80

    brc80 Senior Member

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    Thats what i thought, but this person who knows so much almost had me thinking i was wrong.
     
  9. khai_tuan_nguyen

    khai_tuan_nguyen Senior Member

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    I was told by very reputable people (Groundzero) that if you have a high horsepower, high reving engine you should use the breather (which I do), because at high RPMS the oil pressure sometimes sends the oil out that hole. Without the breather you are recirvulating oil through the intake system, which slows your car down and makes it more prone to detonation.
    What do you guys think? I may be missing a few steps in between, but what abotu the general idea?
     
  10. xj0hnx

    xj0hnx I wanna be sedated VIP

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    In that instance you should get a catch can, and not use a ghey ass filter, that is 1) letting out harmful vapors, and going to clog under such conditions. I have oil in my intake arm, TB, IM, everyone does, it's called blow by.
     
  11. Speedracer228

    Speedracer228 ......

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    what about if you boost it.. arent you supposed to not have that line hooked up to your intake anymore? (on a honda)
     
  12. pissedoffsol

    pissedoffsol RETIRED

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    the pcv system works on vacuum
    when you boost, you loose vacuum
    the catch can goes inline to catch all the vapors and still maintain the circulatory system.

    IMO, its un-needed for a well-running all-motor car.
    its a must for a bosoted car.
     
  13. B16CRX

    B16CRX Senior Member

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    on boosted cars most of us dont rerout the PCV system. It's not a bad idea to do a catch can setup though. You can get a greddy style catch can from ebay for liek $40.
     
  14. pissedoffsol

    pissedoffsol RETIRED

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    the greddy can is worthless IMO.

    its not baffled, and it doesn't even hook up to the right spots.

    the endyn can is the only one worth buying imo.
     
  15. xj0hnx

    xj0hnx I wanna be sedated VIP

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    Yea, but that fucker is like what $259? Daaaamn.
     
  16. K2e2vin

    K2e2vin Senior Member

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    lots of the high-hp boosted guys are still maintaining vacuum in the head by routing it to the exhaust collector(there's a thread on H-T all about it).
     
  17. pissedoffsol

    pissedoffsol RETIRED

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    i paid 159 for my endyn set up.
     
  18. B16CRX

    B16CRX Senior Member

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    you can always put steel wool in teh can to baffle it if it doesn come baffled. easy solution.
     
  19. GSRCRXsi

    GSRCRXsi Super Moderator Moderator VIP

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    ok i think people are starting to talk bout different things here, that needs to be cleared up.

    the valve cover breather and PCV system are different.

    if you use the endyn can, you no longer have vacuum in the system. its designed to catch the oil and return it to the engine via gravity. it just vents everything else to atmosphere through the huge filter on top. the endyn system is essentially all input. the only output is through the filter.

    if you want to keep vacuum in the pcv system you use a closed can with an in and an out. no filter.

    a affled can is the way to go.
     
  20. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    Mine was $150
     
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