[Supras] blowoff valve recommendation

[Jim Jobe]

Actually I was noting the time when I had the stock AFM
and thus also the stock ECU.  And, amazingly, I had a stock
turbo then too.  It was pushing 13-15psi.  That was a long
time ago for both of us.

No ill effects, not even a backfire from it.

Certainly not the case now...the cars or you maturing.  LOL!

On Wed, Nov 14, 2007 at 06:16:09PM -0500, t72pwrd wrote:
> Option B with HKS SSQV vented to atmosphere worked for me as well.  My 
> turbo was a -60 trim at 21PSI at the time.  HKS valve was located where the 
> passenger side foglight WAS.  Amusing as hell to see people jump when I 
> shifted.  Of course this was a damned long time ago and I was much younger 
> then.  Some people even say I've matured ;-0
> 
> Jim is also too modest to say he's running a turbo quite a bit bigger than 
> any of the ones discussed so far.  SP61 or 63 IIRC.
> 
> 
> ----- Original Message ----- 
> From: "Jim Jobe" <jjobe2 at supratech.org>
> To: <b2nice84 at aol.com>
> Cc: <berniek at technicaldevelop.com>; <Supras at supras.com>
> Sent: Tuesday, November 13, 2007 11:08 PM
> Subject: Re: [Supras] blowoff valve recommendation
> 
> 
> >
> >Option B has worked very well for many, for a long time.
> >
> >I've also run just the HKS SSQV with no ill effects.
> >
> >On Tue, Nov 13, 2007 at 09:49:19PM -0500, b2nice84 at aol.com wrote:
> >>The below options is using a blow off valve.
> >>
> >>Option A
> >>The HKS SSQV has an adapter you can add to be able to redirect the air 
> >>back into the accordion hose.? But of coarse it costs some money and a 
> >>little of thinking to install.? Regardless it is doable and you will lose 
> >>the BOV sound if you care about it.?
> >>
> >>Option B
> >>Another way (this is what I am doing) is to keep the stock Bypass valve 
> >>in and install the blow-off valve at the same time (blow-off valve air is 
> >>released into the atmosphere).? It eliminated the bogging. The stock 
> >>bypass valve keeps the AFM happy and the blowoff valve let out all the 
> >>extra air out that the stock bypass valve could not (over 8 psi) when I 
> >>am boosting over stock.?
> >>
> >>I feel the stock bypass valve works great when you are boosting stock.? 
> >>But when boosting more then stock I feel it needs a little more air out 
> >>that the stock bypass valve will not allow.? That is why I used Option B.
> >>
> >>Now I am waiting for Jeff to make a comment on how wrong it is for me to 
> >>do this.? hehe
> >>
> >>Brandon
> >>
> >>
> >>-----Original Message-----
> >>From: berniek at technicaldevelop.com <berniek at technicaldevelop.com>
> >>To: Supras at supras.com <Supras at supras.com>
> >>Sent: Tue, 13 Nov 2007 5:43 pm
> >>Subject: [Supras] blowoff valve recommendation
> >>
> >>
> >>
> >>For the last two weeks I've been getting my jollies by driving my '91
> >>with 550cc injectors, 57 trim turbo, Walbro, Lexus, 3" exhaust from
> >>turbo back, etc.  However, a disturbing boing-oing-oing sound has
> >>persisted from the air intake when closing the throttle under 15 PSI
> >>boost.  Spoke to James at Performance Techniques about this, and he says
> >>it is compressor surge, which I suspected.  From all I have read, using
> >>the Bosch Porsche right angle blowoff valve should have been sufficient,
> >>but it is not.  I get the sound even at low boost.
> >>
> >>
> >>So I'm looking for recommendations as to which BOV to use.  I would like
> >>to recirculate to the accordion hose, even if I need to cut a hole in it
> >>and use curved, clamped large washer-like pieces on the inside and
> >>outside to provide a large bung for the BOV discharge.
> >>
> >>
> >>Any and all suggestions would be appreciated.  Thanks.
> >>
> >>
> >>BernieK.  PS:  Arlene and others were right.  There is never enough
> >>power even if you can "walk" the tires in second gear.  Starting to
> >>wonder what to do next for more HP.
> >>
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> >>
> >>
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