too much boost??
Thread Starter
Instructor
Joined: Sep 2002
Posts: 101
Likes: 0
From: st. louis mo
too much boost??
has anyone heard of the magnuson producing too much ( 10 lbs) boost using the stock gm pulley? my installer told me today that is what my s/c has been making, and that is why im having the knock problems. so now its going to get a new pulley and then go to tulsa for the dyno tune. this sure seems to take a long time to get it right. :confused: :confused:
Le Mans Master
Joined: Aug 2001
Posts: 6,725
Likes: 5
From: Colesville MD
Re: too much boost?? (jfk c5 ls1)
No way is it making 10 lbs of boost. The stock pulley won't spin it fast enough to do it, and even if you have a pulley that could spin it that fast, you'd make a lot more heat than power. Does your installer have experiece with forced induction? If not, I'd get the car out of there quick before he does damage to the engine. You can't be that far from Lingenfelter, just take the car there and get it right.
Greg
:steering:
Greg
:steering:
Melting Slicks
Joined: Sep 2002
Posts: 2,366
Likes: 0
From: Chandler Az
St. Jude Contributor
Re: too much boost?? (QuickSilver2002)
:iagree: Sometimes I will hit 7psi on a cold morning.....But 10 psi I think thats :bs Do you know what your air to fuel is? What is your timing @
Thread Starter
Instructor
Joined: Sep 2002
Posts: 101
Likes: 0
From: st. louis mo
Re: too much boost?? (king_pin)
they did reduce the timing, and found no kr below 2500 rpm. i just got my boost guage so its not installed but thats what they told me today- 10 lbs. the stock pulley is 3.5 in, and he says 4.5 is what it will take.
Le Mans Master
Joined: Aug 2000
Posts: 5,294
Likes: 2
From: Suffolk, Long Island NY
Re: too much boost?? (jfk c5 ls1)
they did reduce the timing, and found no kr below 2500 rpm. i just got my boost guage so its not installed but thats what they told me today- 10 lbs. the stock pulley is 3.5 in, and he says 4.5 is what it will take.
Le Mans Master
Joined: Aug 2001
Posts: 6,725
Likes: 5
From: Colesville MD
Re: too much boost?? (jfk c5 ls1)
they did reduce the timing, and found no kr below 2500 rpm. i just got my boost guage so its not installed but thats what they told me today- 10 lbs. the stock pulley is 3.5 in, and he says 4.5 is what it will take.
Greg
:steering:
[Modified by YELLOHHH, 9:04 PM 2/24/2003]
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