[Supras] blowoff valve recommendation

[t72pwrd]

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.
>>
>> _______________________________________________
>> Supras mailing list
>> Supras at supras.com
>> http://supras.com/mailman/listinfo/supras_supras.com
>>
>>
>> ________________________________________________________________________
>> Email and AIM finally together. You've gotta check out free AOL Mail! - 
>> http://mail.aol.com
>> _______________________________________________
>> Supras mailing list
>> Supras at supras.com
>> http://supras.com/mailman/listinfo/supras_supras.com
>
> _______________________________________________
> Supras mailing list
> Supras at supras.com
> http://supras.com/mailman/listinfo/supras_supras.com