Blow Off Valve Test - TriStateTuners.com :: Home of Tristate Auto Enthusiast

GokuRen · 12-16-2005, 05:05 PM

Does anybody know of a way to test a blowoff valve without putting it into the car yet? I got a blowoff valve out of a 760 Intercooled Turbo Volvo in a junkyard along with the rest of the turbo parts and accessories. But I wanted to know if there is a way to test it before trying to put it to actual use. Maybe using household supplies, like a bike pump and some rigging?

SilverTurboRidin · 12-16-2005, 05:08 PM

hook it onto a air compressor somehow

GokuRen · 12-16-2005, 05:17 PM

Well right now, im sitting here with a Air Hand Pump for like a bike. There's 2 tubes on the blow off valve. Inlet and Outlet. Im tryin to attach a picture of it on here, not sure if it'll work or not.

Gorilla Unit 33 · 12-16-2005, 05:22 PM

good luck

Gorilla Unit 33 · 12-16-2005, 05:23 PM

your better off buying a brand new aftermarket one if ur not sure how that will hold

sisforsurfing · 12-16-2005, 05:32 PM

Not necessarily. I dont know how you'd go about testing one, but if it leaks he should get a new one. If it doesn't leak there's no need, and most likley with the PSI he'll be running, he'll be fine.

wgknestrick · 12-16-2005, 06:41 PM

There should only be one vac hose used to control the valve. Once they see - pressure they open.

2point4DSM · 12-16-2005, 06:54 PM

Neat looking BOV. I don't see a vacuum nipple in the pic so I am assuming the electronics underneath control the opening and closing. You can test it by rigging a cap and vacuum nipple to the inlet portion and pumping it up till you see leakage coming out the other end.

Otherwise, most BOVs have a vacuum nipple that helps control the opening and closing. DSM BOVs will leak around -12 hg mercury at idle and when the pressure differential btw boost and engine vacuum is greater than that difference.

GokuRen · 12-16-2005, 07:58 PM

Well if the electronics underneath do control the opening and closing of it, how am i supposed to get it to work right with my car?

2point4DSM · 12-17-2005, 01:54 AM

Quote:

Originally Posted by GokuRen

Well if the electronics underneath do control the opening and closing of it, how am i supposed to get it to work right with my car?

I doubt that will happen.

Find yourself a nice cheap BOV. No one wants 2g DSM BOVs so I bet you can almost get them for free. They leak on DSMs but only cause they see a lot of boost. If you want to get a nice quality, cheap BOV get one off a 1g DSM. They normally go for about $50.

GokuRen · 12-17-2005, 04:16 AM

Thanks for the tip, I think I might be able to get a blow off valve off of a 1987 mitsubishi conquest. my buddy has a black one that he built and it walks away from Z06 vettes. He's had quite a few DSM cars, I'm sure he has a blow off valve laying around that he don't need or want. I'll look into that. Thanks

12-16-2005, 05:05 PM	#1
GokuRen Tri-State Training Wheels Join Date: Dec 2005 Location: Winslow Member #1173 iTrader: (0)	Blow Off Valve Test Does anybody know of a way to test a blowoff valve without putting it into the car yet? I got a blowoff valve out of a 760 Intercooled Turbo Volvo in a junkyard along with the rest of the turbo parts and accessories. But I wanted to know if there is a way to test it before trying to put it to actual use. Maybe using household supplies, like a bike pump and some rigging?

12-16-2005, 05:08 PM	#2
SilverTurboRidin Tri-State Post Whore Join Date: Feb 2005 Location: L-town PA Member #197 iTrader: (0)	hook it onto a air compressor somehow __________________ Uhh used to be my dog you was in my left titty Scream RYDE OR DIE I thought you would die wit me Found out you a bitch you can't even ryde wit me Now it's a war you ain't on the side wit me To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.

12-16-2005, 05:22 PM	#4
Gorilla Unit 33 TST Ruined My Life! Join Date: Jun 2005 Location: Where do you live? Member #532 My Ride: Fly Mosca II w/pegs LOLZ iTrader: (7)	good luck __________________ find me here: gorillaunit33.wordpress.com

12-16-2005, 05:23 PM	#5
Gorilla Unit 33 TST Ruined My Life! Join Date: Jun 2005 Location: Where do you live? Member #532 My Ride: Fly Mosca II w/pegs LOLZ iTrader: (7)	your better off buying a brand new aftermarket one if ur not sure how that will hold __________________ find me here: gorillaunit33.wordpress.com

12-16-2005, 05:32 PM	#6
sisforsurfing Tri-State Post Whore Join Date: Mar 2005 Member #267 My Ride: 2003 WRX wagon iTrader: (2)	Not necessarily. I dont know how you'd go about testing one, but if it leaks he should get a new one. If it doesn't leak there's no need, and most likley with the PSI he'll be running, he'll be fine. __________________ *To view links or images in signatures your post count must be 10 or greater. You currently have 0 signatures.*

12-16-2005, 06:54 PM	#8
2point4DSM Tri-State Post Whore Join Date: Jun 2005 Member #505 My Ride: 08 Sienna Limited AWD, 07 John Deere riding mower, 03 Honda Pilot, 92 GSX iTrader: (0)	Neat looking BOV. I don't see a vacuum nipple in the pic so I am assuming the electronics underneath control the opening and closing. You can test it by rigging a cap and vacuum nipple to the inlet portion and pumping it up till you see leakage coming out the other end. Otherwise, most BOVs have a vacuum nipple that helps control the opening and closing. DSM BOVs will leak around -12 hg mercury at idle and when the pressure differential btw boost and engine vacuum is greater than that difference. __________________ - Wil 08 Sienna, limited AWD w/ laser guided cruise control, FTMFW! Last edited by 2point4DSM; 12-16-2005 at 06:57 PM.

12-16-2005, 07:58 PM	#9
GokuRen Tri-State Training Wheels Join Date: Dec 2005 Location: Winslow Member #1173 iTrader: (0)	Well if the electronics underneath do control the opening and closing of it, how am i supposed to get it to work right with my car?

12-17-2005, 04:16 AM	#11
GokuRen Tri-State Training Wheels Join Date: Dec 2005 Location: Winslow Member #1173 iTrader: (0)	Thanks for the tip, I think I might be able to get a blow off valve off of a 1987 mitsubishi conquest. my buddy has a black one that he built and it walks away from Z06 vettes. He's had quite a few DSM cars, I'm sure he has a blow off valve laying around that he don't need or want. I'll look into that. Thanks

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