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Bov

Discussion in 'Forced Induction' started by H22CX, Mar 31, 2003.

  1. H22CX

    H22CX Junior Member

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    if you are really turbo savvy then please, dont laugh. i just read the article on how a wastegate works and i feel i understood it pretty well. my question is, if the wastegate is doing its job, what is the point of a blowoff valve? from what i understand, it also dumps boost (and makes a cool noise in between shifts!). can anyone explain this to me?
     
  2. pissedoffsol

    pissedoffsol RETIRED

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    the only job of a BOV is to protect your turbo.

    basically, when you let off the gas, the TB closes. the air has no where to go, but back to the turbo. that negative air flow causes damage to the turbo- so what do we do, we put a BOV on to release the excess pressure.

    note, a BOV is NOT required for a turbo to run. however, it is highly recommeneded.
     
  3. Tonyd0821

    Tonyd0821 Banned

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    [​IMG]




    someone let me know when bubb rubb is getting a bit worn and tired.....
     
  4. pissedoffsol

    pissedoffsol RETIRED

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    :lol:
    and i thought sisteve was king of the Woo. i think you took over man. haha
     
  5. Tonyd0821

    Tonyd0821 Banned

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    :p i accept any and all photoshop challenges hehe :D
     
  6. 2 litre EG

    2 litre EG Senior Member

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    :withstupid: :werd:

    i couldnt have said it any better B)
     
  7. Slo86GT

    Slo86GT Super Moderator

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    And also, a Wastegate controls boost by dumping exhause before it reached the turbo, so the turbo doesn't have so much pressure behind it, forcing it to spin faster and make MORE boost.

    The BOV, as B said is just to release excess boost pressure in the charge pipes so that the turbo doesn't surge.

    Here's an easy way to remember it:

    Wastegate dumps exhaust pressure from the manifold before the turbo.
    BOV dumps boost pressure from the charge pipes after the turbo.
     
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