How much is too much Compression for a SuperCharger
07-12-2007, 01:13 PM
#1
2nd Gear Member
Thread Starter
Join Date: Sep 2006
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Posts: 183
How much is too much Compression for a SuperCharger
I am considering getting a centrifugal super charger, but I want to know. How much Compression is too much for a pump gas car. I am going to be doing a PI swap, and my compressions will be around 10.2:1. And I would like to do around 9 PSI. But I want to know if that is too much compression with the super charger.
07-12-2007, 01:17 PM
#2
Underboss
Join Date: Jan 2006
Location: Helaware
Posts: 20,273
RE: How much is too much Compression for a SuperCharger
With the right tune you'll be fine at 9 psi
Add an inter/aftercooler or meth injection https://mustangforums.com/m_3430620/tm.htm
I ran about 9psi for about a year with 10.5:1 compression with no probs
Add an inter/aftercooler or meth injection https://mustangforums.com/m_3430620/tm.htm
I ran about 9psi for about a year with 10.5:1 compression with no probs
07-12-2007, 05:06 PM
#6
4th Gear Member
Join Date: Jul 2006
Location: N. Ft. Myers, Fl
Posts: 1,329
RE: How much is too much Compression for a SuperCharger
ORIGINAL: Rusmisel01GT
If I remember correctly he was around 370ish rwhp... but im not sure how he built his motor... I know he had PI heads... thats all i know though...
If I remember correctly he was around 370ish rwhp... but im not sure how he built his motor... I know he had PI heads... thats all i know though...
07-12-2007, 05:36 PM
#8
Underboss
Join Date: Jan 2006
Location: Helaware
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RE: How much is too much Compression for a SuperCharger
ORIGINAL: 2002GTAUTOVERT
you can change your piston head design to help lower compression... wont be cheap though and they need to be forged
you can change your piston head design to help lower compression... wont be cheap though and they need to be forged
07-12-2007, 06:17 PM
#9
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RE: How much is too much Compression for a SuperCharger
Well, if it is an issue to have that much compression I would just rebuild the bottom end all together. But, I was reading an article that said because of the lag and the way the Cetrifugals work, higher compression is not as bad as it is for a roots style or turbo set up. So I figured Id ask, as I have heard 9 to 1 compression is pretty high for Forced Induction, but I was wondering if anyone had any idea if 10 to 1 is too much.
07-12-2007, 07:23 PM
#10
Underboss
Join Date: Jan 2006
Location: Helaware
Posts: 20,273
RE: How much is too much Compression for a SuperCharger
ORIGINAL: ajmodelski
Well, if it is an issue to have that much compression I would just rebuild the bottom end all together. But, I was reading an article that said because of the lag and the way the Cetrifugals work, higher compression is not as bad as it is for a roots style or turbo set up. So I figured Id ask, as I have heard 9 to 1 compression is pretty high for Forced Induction, but I was wondering if anyone had any idea if 10 to 1 is too much.
Well, if it is an issue to have that much compression I would just rebuild the bottom end all together. But, I was reading an article that said because of the lag and the way the Cetrifugals work, higher compression is not as bad as it is for a roots style or turbo set up. So I figured Id ask, as I have heard 9 to 1 compression is pretty high for Forced Induction, but I was wondering if anyone had any idea if 10 to 1 is too much.