How Does GM Supercharger ByPass Valve Work? - Boost Forum

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How Does GM Supercharger ByPass Valve Work?
Thursday, August 18, 2005 12:19 PM
I know have been driving my car a lot with the GM Blower on it and I am wondering how the bypass valve exactly works. I dont have a boost guage hooked up at the moment and should by tonight but dont understand the bypass. I put my hand on it and revved the motor and felt it open and stuff. How does it work and when is it suposed to work? I feel the biggest kick between 4-5600 RPMs, because I only shift at 5600 because I am afraid to blow my motor. Is it adjustable for more boost at lower RPM?



http://members.cardomain.com/vertz24 1998 Z24 Convertible

Re: How Does GM Supercharger ByPass Valve Work?
Thursday, August 18, 2005 12:28 PM
vacuum opens the valve (like a wastgate) and lets the boost out.....

thats how it works.




SPD RCR Z - '02 Z24 420whp
SLO GOAT - '04 GTO 305whp
W41 BOI - '78 Buick Opel Isuzu W41 Swap

Re: How Does GM Supercharger ByPass Valve Work?
Thursday, August 18, 2005 12:34 PM
But at what RPMs, and is there any way to change it, also can it stick open maybe? Mine kinda feels like it does sometimes.



http://members.cardomain.com/vertz24 1998 Z24 Convertible
Re: How Does GM Supercharger ByPass Valve Work?
Thursday, August 18, 2005 12:46 PM
it isnt rpm dependant , it opens and closes on demand from the vacuum level


or your right foot on the go pedal







Re: How Does GM Supercharger ByPass Valve Work?
Thursday, August 18, 2005 1:00 PM
Basically... when you can hear the whine of the blower it's closed. When you can't... it's open.





Re: How Does GM Supercharger ByPass Valve Work?
Thursday, August 18, 2005 1:04 PM
Okay, pretty simple I see how it is. So when I goose it its pushing in boost but otherwise I am "NA". Is everyone running 93 octane with their blowers? I have a mix of 87 and 93 so about 91.



http://members.cardomain.com/vertz24 1998 Z24 Convertible
Re: How Does GM Supercharger ByPass Valve Work?
Thursday, August 18, 2005 1:56 PM
you should be running straight 93 , since you have it avaliable to you

and mixing fuel doesnt work out like you think it does







Re: How Does GM Supercharger ByPass Valve Work?
Thursday, August 18, 2005 7:46 PM
its says to run 92.. isn't that enough

Nate



Evolution of Cavyboy-->C22t--> C24na--->c24s/c
1995 Cavalier W/2k1 Engine
GM S/C 13.940@99.78pmh w/2.068 60ft
Re: How Does GM Supercharger ByPass Valve Work?
Thursday, August 18, 2005 10:54 PM
well considering most states arent using 92 any more , you either have 91 or 93

lol


atleast 91 is all we get







Re: How Does GM Supercharger ByPass Valve Work?
Friday, August 19, 2005 4:59 AM
yeah i put the best gas the place has near me, 2.79 a gallon over in maryland...yikes




Re: How Does GM Supercharger ByPass Valve Work?
Friday, August 19, 2005 5:40 AM
ours was 2.85 last week, but now its back down to 2.59





Re: How Does GM Supercharger ByPass Valve Work?
Saturday, August 20, 2005 9:54 PM
Ha, you guys are lucky! 94 octane here is $1.19 CDN a litre.. x 4 to make a gallon. Even with exchange rates, that's steep...

I ran 91 octane... pinged like a mother @!#$!!




<a href="http://www.lenkorules.com/"><img src="http://members.shaw.ca/jlenko/sig/redsig.jpg"></a>
Re: How Does GM Supercharger ByPass Valve Work?
Tuesday, September 25, 2012 12:28 PM
So this is an absolute troll because I'm bored at work. But LOL at the complaints with gas prices. That is all.


"In Oldskool we trust"
Re: How Does GM Supercharger ByPass Valve Work?
Tuesday, September 25, 2012 1:43 PM
holy dead post revitalization batman!
and yeah, Im paying just a few cents sub $4/gal for 93.


04 Cav. 2dr. 5spd. My DD. 'Nuff said.
Re: How Does GM Supercharger ByPass Valve Work?
Wednesday, September 26, 2012 8:18 AM
I paid 4.50/gal for 93 in Connecticut the other day. They're always way more expensive though. Stupid Connecticut....


"In Oldskool we trust"
Re: How Does GM Supercharger ByPass Valve Work?
Saturday, October 06, 2012 9:45 AM
I just paid $415 for premium in philly


z28guy(KGM BEOTCH)
Re: How Does GM Supercharger ByPass Valve Work?
Saturday, October 06, 2012 1:50 PM
Just paid exactly the same in Boston last night. sux.


"In Oldskool we trust"
Re: How Does GM Supercharger ByPass Valve Work?
Sunday, October 07, 2012 10:32 AM
You know...gas prices would be cheaper if people like Vin Diesel and his ricer thugs werent running around stealing petrol from mexican tankers!


04 Cav. 2dr. 5spd. My DD. 'Nuff said.
Re: How Does GM Supercharger ByPass Valve Work?
Sunday, October 07, 2012 12:33 PM
z28guy wrote:I just paid $415 for premium in philly


Was that $415 total to fill up the Caddy?






Re: How Does GM Supercharger ByPass Valve Work?
Sunday, October 07, 2012 12:41 PM
EVILution (KGMs FrankenCav) wrote:
z28guy wrote:I just paid $415 for premium in philly


Was that $415 total to fill up the Caddy?


Lolz, probably.


"In Oldskool we trust"
Re: How Does GM Supercharger ByPass Valve Work?
Thursday, October 18, 2012 12:09 PM
Lmao , I cant afford to fill the caddy every week


z28guy(KGM BEOTCH)

Re: How Does GM Supercharger ByPass Valve Work?
Saturday, October 20, 2012 8:01 PM
try $1.38L x 3.79(US GAL) = 5.23 is what we pay in ontario right now for 91 converted to your format 94 is about 5-10cents more a litre.

YOU HAVE TO PAY TO PLAY FOLKS



JBO since July 30, 2001
Re: How Does GM Supercharger ByPass Valve Work?
Saturday, October 20, 2012 8:10 PM
NOTa2_4 wrote:try $1.38L x 3.79(US GAL) = 5.23 is what we pay in ontario right now for 91 converted to your format 94 is about 5-10cents more a litre.

YOU HAVE TO PAY TO PLAY FOLKS

No doubt you guys have it rough up there when it comes to gas prices. My condolences.


"In Oldskool we trust"
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