differences in blow off valves

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Apr 21, 2009 | 09:31 AM

#41

'Trust'

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From: Eternity

Quote:

Originally Posted by Grr

Ive had my tial Q on for about 2 weeks and its awesome. I have a 6lb spring cause im too cheap to buy the 3lb, and there is no problems with it. I run about 12-13inHg at idle and it is a good halfway open. God damn, this thing is loud as hell, my GF hates it. BUT, no more pipes blowing off, very quick release on the shifts as well

So a 3lb spring will let my TiAl 50mm stay a little open at idle but still stay shut under WOT ant 16psi?

Apr 21, 2009 | 11:10 AM

#42

Drewstein

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From: Scottsdale, AZ

Quote:

Originally Posted by 'Trust'

So a 3lb spring will let my TiAl 50mm stay a little open at idle but still stay shut under WOT ant 16psi?

Yes it will.

Apr 21, 2009 | 11:27 AM

#43

Grr

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From: Fargo ND

Quote:

Originally Posted by 'Trust'

I have a TiAl 50mm BOV on my car, but I'm selling it next week to be replaced by a Vortech Mondo, it's a great piece though.

At that low boost you can use the factory BPV

LOL, i just cut off my vortech Mondo and put the Tial on cause the mondo is inferior. Couple things in its design that are lacking

Apr 21, 2009 | 11:50 AM

#44

TiAL

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From: MI

Quote:

Originally Posted by salemetro

On my latest build, I'm using Synapse BOV and Synapse wastgate. They are supposedly the "latest and greatest"....even better than Tial....but only time will tell if that's true.

straight otta' China, the comapny says they are the latest and greatest... fact is, generally they fall apart and leak

Apr 21, 2009 | 11:52 AM

#45

TiAL

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From: MI

Quote:

Originally Posted by Grr

just send me your spring and i'll swap it out

Apr 21, 2009 | 11:54 AM

#46

TiAL

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From: MI

Quote:

Originally Posted by 'Trust'

I have a TiAl 50mm BOV on my car, but I'm selling it next week to be replaced by a Vortech Mondo, it's a great piece though.

why?

Apr 21, 2009 | 12:00 PM

#47

Grr

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From: Fargo ND

Quote:

Originally Posted by TiAL

just send me your spring and i'll swap it out

Ill pick up the 3lb when i swap heads this winter, gonna lose 3-4"Hg of pull so i will need it then. Cant let the car be down cause im waiting for a spring! Its too much fun!

Apr 21, 2009 | 01:24 PM

#48

52172

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From: Buellton Ca

TS XS here no problems whatsoever going on three years havn't even had to contact customer service.

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Apr 21, 2009 | 01:57 PM

#49

slothy

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From: St. Clair Shores, Mi.

tial w/ 3lb spring here and love it, loud as fawk!

Apr 21, 2009 | 03:32 PM

#50

'Trust'

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From: Eternity

So the 3lb spring is fine with 16 psi max? It won't leak boost or anything under WOT? I still don't know the mechanics of how the BOV even works so pardon my ignorance.

Apr 21, 2009 | 03:39 PM

#51

TiAL

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From: MI

Quote:

Originally Posted by 'Trust'

So the 3lb spring is fine with 16 psi max? It won't leak boost or anything under WOT? I still don't know the mechanics of how the BOV even works so pardon my ignorance.

all the rating has to do with is vacuum, it will open at -6in/hg (-3psi = -6in/hg)

the bov will hold anything you throw at it

Apr 21, 2009 | 03:41 PM

#52

'Trust'

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From: Eternity

Quote:

Originally Posted by TiAL

all the rating has to do with is vacuum, it will open at -6in/hg

the bov will hold anything you throw at it

Ok cool, if you guys think it'll work thats fine. You should have an order to drop ship to Edmond, Oklahoma from Forced Performance for that 3# spring.

Apr 21, 2009 | 04:12 PM

#53

TiAL

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From: MI

Quote:

Originally Posted by 'Trust'

Ok cool, if you guys think it'll work thats fine. You should have an order to drop ship to Edmond, Oklahoma from Forced Performance for that 3# spring.

yep, i spoke with amber about it

Apr 21, 2009 | 06:24 PM

#54

BlkHwk

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From: MO

Quote:

Originally Posted by TiAL

straight otta' China, the comapny says they are the latest and greatest... fact is, generally they fall apart and leak

I hate China ****

Apr 21, 2009 | 06:31 PM

#55

BlkHwk

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From: MO

Quote:

Originally Posted by TiAL

all the rating has to do with is vacuum, it will open at -6in/hg (-3psi = -6in/hg)

the bov will hold anything you throw at it

So what does this mean? Does this mean it starts to open or is fully open. The spring they sent me the other day would start to open with a vacuum pump @ 6" and was fully open @ 11". Your site doesn't show the -3 spring but it does show the 11 psi spring as pink. The spring I got has pink paint on it. So I figured it was the 11 psi spring especially since it was fully open @ exactly 11" vacuum.

BTW thanks for helping clear all this up.

Edit: After rereading your post and checking your site again it must begin to open @ 6" hg. Which is what mine does. So now I'm pretty sure I have the -3 spring. I wish you would paint it a different color. LOL

Last edited by BlkHwk; Apr 21, 2009 at 08:16 PM.

Apr 21, 2009 | 06:44 PM

#56

BlkHwk

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From: MO

Quote:

Originally Posted by 'Trust'

So the 3lb spring is fine with 16 psi max? It won't leak boost or anything under WOT? I still don't know the mechanics of how the BOV even works so pardon my ignorance.

Just open it up and have a peek. That's the first thing I did when I got mine. Just be careful not to pinch the diaphram when you reassemble it. The area of the diaphram is larger than the piston. To me that says with spring assist + boost pressure in the (vacuum port side )intake side of the diaphram it cannot open under boost. The pressure holding the piston closed will always be greater than the pressure from the supercharger feeding the engine.

Last edited by BlkHwk; Apr 21, 2009 at 08:23 PM.