Safe to "vent" both stock BOV's??
07-16-03, 02:52 PM
#27
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So at transition the ccv opening to route almost all air to the secondary turbo triggers the crv to close and the bov will be activated upon releasing the throttle? How can the bov then be cooperating with both turbos if its only connected to the first? or are you saying that the crv acts as a sort-of pop-off valve under 4500 rpm and a bov above 4500?
Seems like nothing happens before 4500 other than a lot of air coming from the crv....?
Please correct me if I'm wrong
Seems like nothing happens before 4500 other than a lot of air coming from the crv....?
Please correct me if I'm wrong
Last edited by tookwik; 07-16-03 at 03:11 PM.
07-16-03, 03:01 PM
#28
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Originally posted by Dr Wankel
I have had both my BOV and CRV vented with small K&N filters on then for over a year now. I didn't notice a difference in the noise level with a without a filter.
I have had both my BOV and CRV vented with small K&N filters on then for over a year now. I didn't notice a difference in the noise level with a without a filter.
07-16-03, 03:17 PM
#29
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You filter it cause it will suck in air when under a small amount of vacume like 10 or less.
BTW - I'm also non seq and running the stock bov and crv as 2 bov's. Its been working good but I think they MIGHT be leaking some now. Course I have been running 18psi of boost for 6 months lol. Plus I ran 14-15 for a year prior to that. And they have been known to hit over 20psi by mistake haha
You think I'm too hard on those little plastic stockers? lol
STEPHEN
BTW - I'm also non seq and running the stock bov and crv as 2 bov's. Its been working good but I think they MIGHT be leaking some now. Course I have been running 18psi of boost for 6 months lol. Plus I ran 14-15 for a year prior to that. And they have been known to hit over 20psi by mistake haha
You think I'm too hard on those little plastic stockers? lol
STEPHEN
07-16-03, 03:21 PM
#30
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Originally posted by SPOautos
You filter it cause it will suck in air when under a small amount of vacume like 10 or less.
STEPHEN
You filter it cause it will suck in air when under a small amount of vacume like 10 or less.
STEPHEN
07-16-03, 03:51 PM
#31
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Well according to me and others is will suck in air 
. Decide who you want to believe or just go out there and test it yourself.
Put your hand in front of your bov and modulate the gas with the throttle cable, or get someone else to play with the gas petal and get it close to 0psi while you hold your hand in front of the bov and cvr.
Come back and let us know what you find
BTW - you have to kinda keep it at 0 (or close) for a second or so.
Also as a side note I dont use a filter cause I'm just not worried about it lol
STEPHEN
. Decide who you want to believe or just go out there and test it yourself.Put your hand in front of your bov and modulate the gas with the throttle cable, or get someone else to play with the gas petal and get it close to 0psi while you hold your hand in front of the bov and cvr.
Come back and let us know what you find
BTW - you have to kinda keep it at 0 (or close) for a second or so.
Also as a side note I dont use a filter cause I'm just not worried about it lol
STEPHEN
Last edited by SPOautos; 07-16-03 at 03:58 PM.
07-16-03, 07:08 PM
#32
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I have not disagreed or agreed with either side. I myself have believed that it will suck air because so many others have said and its not worth putting a filter over. My worries are it blowing gunk/oil out into my engine bay. Maybe I'll plug it... kidding 
07-16-03, 09:48 PM
#33
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tookwik: One way to find out if the BOV is venting gunk/oil is simple. Just check the hose and the filter adapter it's connected to for gunk/oil residue. That will give you a good indication on whether you'll need to "filter" the vented BOV or not!!
07-16-03, 10:19 PM
#34
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Originally posted by areXseven
scratchjunkie : There's obvoiusly nothing wrong with the stock/original BOV hook-up to the air box, but it muting effect on the BOV when it releases back pressure. Therefore, venting the BOV (disconnecting it from the hose to air box set up) creates a louder sound when the BOV does its job. Makes for a cool sound!!, .. And it's very cost effective when you compare the price of aftermarket BOVees that function in the the manner. The only plus is that some aftermarket BOV's can be adjusted for specific pressure relief.
scratchjunkie : There's obvoiusly nothing wrong with the stock/original BOV hook-up to the air box, but it muting effect on the BOV when it releases back pressure. Therefore, venting the BOV (disconnecting it from the hose to air box set up) creates a louder sound when the BOV does its job. Makes for a cool sound!!, .. And it's very cost effective when you compare the price of aftermarket BOVees that function in the the manner. The only plus is that some aftermarket BOV's can be adjusted for specific pressure relief.
im gonna leave that alone.
07-16-03, 11:32 PM
#35
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For those that want to know. I think the K&N # was 62-136D. It been a while ago since I've put them on there but a 3/4" opening seems right. Or just go measure yourself, heres the page with the universal filters and part #'s http://www.knfilters.com/universal/univrndstrt.htm
07-17-03, 07:36 PM
#36
Originally posted by maxpesce
The BOV is not SUPPOSED TO SUCK air under vacuum - IF it Sticks open It MAY suck air , but it is designed as a One Way flow valve.
The BOV is not SUPPOSED TO SUCK air under vacuum - IF it Sticks open It MAY suck air , but it is designed as a One Way flow valve.
07-17-03, 08:24 PM
#37
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Originally posted by tookwik
I have not disagreed or agreed with either side. I myself have believed that it will suck air because so many others have said and its not worth putting a filter over. My worries are it blowing gunk/oil out into my engine bay. Maybe I'll plug it... kidding
I have not disagreed or agreed with either side. I myself have believed that it will suck air because so many others have said and its not worth putting a filter over. My worries are it blowing gunk/oil out into my engine bay. Maybe I'll plug it... kidding
