BOV Position - Up or Down? Does it matter?

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Feb 17, 2009 | 09:36 PM

#31

biggie5252

Evolved Member

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Joined: Apr 2007

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From: Kansas City

Quote:

Originally Posted by biggie5252

The bottom port on the stock valve should always be connected to the ic piping and the side port plumbed to the intake regardless of the final physical orientation.

Here you go!

Feb 18, 2009 | 12:02 AM

#32

EnjoyDriving

Evolving Member

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Joined: Jul 2007

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From: Minnesota

Quote:

Originally Posted by scheides

omfg are you guys serious? No offense but geez! Look up how a bov works and simply looking at a valve will tell you what the proper orientation is. The valve itself can be upside down, facing left, right, back, or hanging out the hood vent as long as the side direclty opposite the spring is connected to the charge piping, the UICP, whatever you wanna call it. The opposite end of this has the 'hat' shaped flat-ish end with the nipple on it.

The other end must either be recirculated back into the intake pipe (after the maf) or just left open (vented to atmosphere, VTA)...but recirculating it is ideal.

BOTH of the pictures listed here are 'correct' if you understand how it works. Sorry for the harsh reply but this is really turbocharging 101. I have an awesome book by Corky Bell (seriously) that you should read. EnjoyDriving, if you'd like to borrow it let me know, otherwise it's on half.com for cheap:

http://product.half.ebay.com/Maximum...nfoQQprZ535870

Hey, Scheide. I know how/what a BOV is supposed to work, but just the fact that I've read so many postings on here, some yada yada about backward setup working better and some yada yada the opposite...just so much theories up here and the thing is that I can't test them all out myself, since i don't have the hand-on experience like you, man

Therefore, it's good to bring it up here for some open discussion. Anyways, you did answer the core of my question, the orientation (such as direction/position) of the BOV seems doesn't matter as long as it's hooked up correctly - cool. Then, it might be a boost leak in my case and you'll have to sit in my car for a ride next time I bring it over, ok