Blow Off Valve Recommendations.

[anadaron]

DISCLAIMER! *NOT DOING THIS FOR THE PSSSHSHHSSH SOUND*

Looking to add a BOV to my setup so i do not get any compressor surge when letting off the gas. Would rather just vent the unused boosted air to the atmosphere.

I have a GT6152E turbo looking to run around 22-25lbs of boost max when i get my alky kit in.

Just curious what others have used and the results. Likes and dislikes. Where you placed it? Any info is appreciated as you do not see these often on our Automatic cars.

 

[Turbo6Smackdown]

you want to vent to the atmosphere? is the rest of the system adjustable for that ? I always thought one should always vent back into there system.

 

[anadaron]

Well the car had a system that vented the air back to the intake side of the turbo using a bosch pressure valve but it didn't do anything to help with compressor surge.

On my turbo Cavalier i used a turboXS BOV and it elminated my compressor surging problems. It vented the excess boost to the atmosphere as do most systems like this.

The buick just has compressor surge when i let off it after a quick tear on the street or a 1/4mile tear on the track and i wouldlike to eliminate that so that i am not replacing my turbo as often from surging problems.

I am just curious what the majority of the TBuick community is using or will i be one of the few to use it?

 

[XxDarkSidexX]

love my tial, nice and quite, unique sound nice not really ricy in my opinion, did i mention is was made by tial, tial tial tial.

works great looks great with my tial 40mm wastegate

 

[anadaron]

I am still internally gated and will probably stay that way until i push past the 22-25PSI.

Do you have a picture of where you located the BOV on your up pipe?

I have a stock location with a 3" up pipe and was thinking i could just get it put on the fron of the 3" up pipe?

 

[XxDarkSidexX]

I am still internally gated and will probably stay that way until i push past the 22-25PSI.

Do you have a picture of where you located the BOV on your up pipe?

I have a stock location with a 3" up pipe and was thinking i could just get it put on the fron of the 3" up pipe?

this is a new computer so no i haven't got a picture of it. But its mounted AS CLOSE to the TB as possible on my pipe. Like 2 inches of from the butterfly on the TB. But this is if you NOT running alky.

Soon I am going to relocate my bov farther down the up pipe and as close to the outlet of my PSFM intercooler as possible(still on the up pipe but as far down as possible from the TB), to allow my dual nozzle alky to spit freely and not come out the BOV.

 

[anadaron]

Yeah i was worried what would happen with Alky close to it. But i definately will mount it farther away from where the alky is gonna go.

By the way(off topic) how hard was the PSFM install? How much of a difference did it make? I am looking for a low cost FM that will perform well.

 

[Roc87]

I'm running an ATR BOV, it still has some compressor surge though

 

[Turbo6Smackdown]

you were wondering what most of the community was running? well, most of the community doesnt run one. but of the ones that do, im seeing mostly atr, tial and the deltagates. Im not sure what sort of compressor surge you have but, i know people that have been running 20 lbs of boost, with no bov for years and years, with no problems whatsoever.

 

[headstrong3157]

Here is a picture of the set-up on my car. It works great and is actually and HKS by-pass valve but just vented to the atmosphere. I have a front mount setting here to put on but waiting until I purchase an alky kit to put it on. When I put the front mount and the alky on the car Im going to purchase and HKS SSQV blow-off valve and move it farther down the up-pipe. Hope it helps.

 

[Royal-T-Ltd]

Ive been running an HKS SSV for almost 4+ years - NO problems at all.... and fyi we dont need to vent back to intake because of DFCO mode on our computers - just vent to atmosphere you will be fine

 

[Sleeper-6]

I've had good luck with my Tial valve. No leaks, and it's not hyper-active like some of the ricer valves out there. Mine has a pretty stiff spring so it will not vent unless I let off quickly above 5 psi or so.

 

[TURBOGTA1]

DISCLAIMER! *NOT DOING THIS FOR THE PSSSHSHHSSH SOUND*

Looking to add a BOV to my setup so i do not get any compressor surge when letting off the gas. Would rather just vent the unused boosted air to the atmosphere.

I have a GT6152E turbo looking to run around 22-25lbs of boost max when i get my alky kit in.

Just curious what others have used and the results. Likes and dislikes. Where you placed it? Any info is appreciated as you do not see these often on our Automatic cars.

Tial works great for me. Took a little time playing with different springs/bushings to get it perfect, but worth it. No more compressor surge from my 70-GTQ.

 

[turbo buicks]

i use a greddy type R valve (whoa! type RRRR) its big, flows a lot of air and makes a low wooshing sound not that hi pitched whistle crap. it really only opens at anything over 15 lbs

 

[VadersV6]

I prefer bypass setups over blowoffs, for many reasons. The driveability of my setup is flawless. The whoooosh sound is very muffled because its dumping into the intake tube. Ive got a Bosch 103 valve on here. It has a plastic valve, which isnt that great. The 108's to 112's use a brass valve which is stronger, but the stroke is alot less than the 103..like half as much. Given that the bypass valve is open under vacuum, this means that the valve is open during cruise. The turbo is being completely bypassed, and its running a like an N/A motor until you give it gas and the valve closes. Then the turbo spools up and the system is now closed. I used the 103 because of the stroke. Since the engine is running off this source of air under vacuum, I want the valve open as far as I can. Only bad thing about bypasses and BOV's, is that if you're trying to feather the throttle out of the hole, the air gets dumped every time you let off the gas, and it has to re-spool again. Its a whole new learning curve for driving. Let off the gas just slightly too much and its all over. You can adjust the spring in a BOV so this doesnt happen, but the BOV doesnt give you the "bypassing" under cruise, and the nice and modest dump sound.