Blow off valve or air bypass valve..........

That spinning thing that makes all of the cool noises. OE and Aftermarket.

Moderators: Helpinators, Moderators

Post Reply
timbo
In Neutral
Posts: 11
Joined: Tue Jul 01, 2008 8:02 am

Blow off valve or air bypass valve..........

Post by timbo »

kind of a newb to all things turbo.....hopefully posting in the right spot.....

I have an EJ22T out of a 1991 AWD Legacy sedan. When pulling the engine out ,I broke the nipple off of the 'air bypass valve" which is under the intake pipe to the throttle body. The nipple was plumbed to the manifold for vacuum -and the 2 larger ports - 1 from the intake pipe the other -to the intake resonator.

Question - Is this valve the B.O.V.???

I found a blow up of the intake system and Subaru calls this valve an "air bypass valve". My dilemma is the $120 for a new one. I've tried fixing but it just isn't staying together.

Question - do I need to find a Subaru specific valve or is there an aftermarket one available.

Excuse my newbness.....thanks for any input.....

timbo
bmxkelowna
Fourth Gear
Posts: 1047
Joined: Thu Feb 16, 2006 5:00 am
Location: kelowna bc canada
Contact:

Post by bmxkelowna »

any bpv (by pass valve) will work.
i was using a vw/audi one when i 1st put my saab top mount intercooler in. you should be able to find one at a junk yard from a 1.8L turbo vw/audi
dscoobydoo
Fifth Gear
Posts: 2275
Joined: Mon Mar 08, 2004 2:30 am
Location: Auburn, WA
Contact:

Post by dscoobydoo »

Read up on the atmospheric vent vs recirculation.

That should answer a lot of your questions.

There are aftermarket replacements, and probably a few people on the forum who have spares. I might have a spare.

PM blackbart, as he is always good for spare parts.
Yes I have too many Subarus
No you can't have one
05 GD-STI
01- RS- Swapped-07 STI
00- GF
93 SS- "the original Robtune" (now in new hands)
BXSS
Fourth Gear
Posts: 1301
Joined: Wed Jan 10, 2007 4:23 pm
Location: Bx, NY

Post by BXSS »

I have used a brass barbed fitting to repair one of these for a friend in the past.

I just made the hole big enough that the fitting would thread in tightly & then i put some JB weld around the joint just in case - that bpv is still alive & well.
94 Legacy SS
96 Impreza OBS
99 Impreza OBS-T
04 Sienna XLE Limited AWD
the_watts10
First Gear
Posts: 230
Joined: Fri Dec 14, 2007 6:06 am
Location: Asheville NC USA
Contact:

Post by the_watts10 »

u can also use a blow off valve instead but just make sure not to get a sock sti onesuld be a sequential blow off valve
ej22t hybrid, 3.5" downpipe, Gl turbo intake/desnorkel 9psi DEAD
ciper
Knowledgeable
Knowledgeable
Posts: 4388
Joined: Tue Oct 15, 2002 8:16 pm
Location: SFCA

Post by ciper »

IMO If you insist on the sound try to get a hybrid unit which only blows off a portion of the air, returning most of it to the intake.
timbo
In Neutral
Posts: 11
Joined: Tue Jul 01, 2008 8:02 am

Post by timbo »

thanks for the info. people.............I'm going to try a few local wreckers to see what I can dig up.............I did find a complete 91 AWD sedan with a seized ej22t on craigslist though. Seller's not interested in parting it out. $ 900 for a complete car...........hmmmmmm :D
Post Reply