Limits of the stock BOV?
01-19-04, 06:19 PM
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Limits of the stock BOV?
Man, I know I've read this before, but I just did a 1/2 hour worth of searching and only came up with one concrete reference.
When is the stock BOV approaching its limit before it is no longer reliable (i.e. may start leaking)?
I thought I remembered reading several opinions that it was at 12-13 psi. Is this accurate?
Steve
When is the stock BOV approaching its limit before it is no longer reliable (i.e. may start leaking)?
I thought I remembered reading several opinions that it was at 12-13 psi. Is this accurate?
Steve
01-19-04, 06:26 PM
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01-19-04, 11:47 PM
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ha! i kilt it!
01-20-04, 12:24 AM
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correct me if im wrong.. which i probably am.. but this guy says that a BOV isnt needed.. I always though that the BOV is what basicly regulates how much pressure your running.. Like it you have it tuned to 10 PSI anytime theres more than 10 PSI the bov lets off pressure..
I have never had a turbo car so never had any first hand exp with them yet..
I have never had a turbo car so never had any first hand exp with them yet..
01-20-04, 12:37 AM
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I think you're referring to "pop off valve". This was an older, crude method used to control boost. The modern choice for boost control is dictated by the wastegate.
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01-20-04, 01:32 AM
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the bov is to control the pressure between the compressor and the tb. When you decellerate the car the turbo is still spinning, hence creating boost, but your tb plates are closed, so as the pressure increases, the bov lets air escape. If it didn't let the pressure escape, i'd imagen that the pressure would bust the tb plates in, and f your car up. someone corroborate this info.
Thanks
Thanks
01-20-04, 01:54 AM
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Originally posted by knightkarr
the bov is to control the pressure between the compressor and the tb. When you decellerate the car the turbo is still spinning, hence creating boost, but your tb plates are closed, so as the pressure increases, the bov lets air escape. If it didn't let the pressure escape, i'd imagen that the pressure would bust the tb plates in, and f your car up. someone corroborate this info.
Thanks
the bov is to control the pressure between the compressor and the tb. When you decellerate the car the turbo is still spinning, hence creating boost, but your tb plates are closed, so as the pressure increases, the bov lets air escape. If it didn't let the pressure escape, i'd imagen that the pressure would bust the tb plates in, and f your car up. someone corroborate this info.
Thanks
one last question, Where does that screaming sound come from.. I always figured it was the blow off valve..
but in thatthread the guys where talking about the waist gate noise..
01-20-04, 02:34 AM
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The Wastegate diverts exaust away from the turbo turbine so you don't accidentally create more boost than you want. None of this has to do with my original post. I can't believe nobody has an answer? 
Steve
Steve
01-20-04, 11:33 AM
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just for refrence i am running the stock bov with a one way check valve on it becouse it is vented open. i have run upwards of 15-20psi and not noticed a leak. granted the 20 was a creep put still. 15 is about normal for cold weather. but its not a matter of leaking its a matter of how fast can your bov get rid of all that air. you need a high flow quick reacting bov. just my .02
ej
ej
01-20-04, 11:38 AM
#19
The stock BOV, ISN'T a BOV, it is a pressure actuated bypass valve venting the compressed air back into the intake prior to the compressor. If you do as slow87turbo and add a one way check valve it will react similarly to a bov, However If you are running more than stock boost I would personally suggest that you upgrade to better than stock "real" BOV.
01-20-04, 12:33 PM
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Originally posted by jreynish
The stock BOV, ISN'T a BOV, it is a pressure actuated bypass valve venting the compressed air back into the intake prior to the compressor. If you do as slow87turbo and add a one way check valve it will react similarly to a bov, However If you are running more than stock boost I would personally suggest that you upgrade to better than stock "real" BOV.
The stock BOV, ISN'T a BOV, it is a pressure actuated bypass valve venting the compressed air back into the intake prior to the compressor. If you do as slow87turbo and add a one way check valve it will react similarly to a bov, However If you are running more than stock boost I would personally suggest that you upgrade to better than stock "real" BOV.
01-20-04, 08:40 PM
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Originally posted by SureShot
Now I see the importance of the throttle close dash pot.
Now I see the importance of the throttle close dash pot.
kevin.
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