Compression And Boost
#1
Is it advisable to use higher than 9:1 compression rotors when building an engine with a goal of 450 fwhp? I cannot find 9:1 rotors for any sort of decent price. The 9.4 and 9.7's seem a dime a dozen, however.
Also, and further relating this thread to this forum, how would my compression selection affect my turbo selection? ie, If I am limited to running less than 15psi (hypothetical guess) because of the higher compression, should I bother looking at the GT35/40 if I need to push 20psi in order to generate the numbers that I want?
Also, and further relating this thread to this forum, how would my compression selection affect my turbo selection? ie, If I am limited to running less than 15psi (hypothetical guess) because of the higher compression, should I bother looking at the GT35/40 if I need to push 20psi in order to generate the numbers that I want?
#3
Tulsa, hehe. My dad gave me a burned copy of some new Roy D. Mercer!
Anyway, I would like something that is more for Auto-X, stoplight drags, cruising, etc. rather than out and out hp. All I have now are the s4 8.5:1 slugs. I would like to upgrade to something lighter with a bit more compression. FD rotors would be ideal, but all I have managed to find are 9.4 and 9.7:1 N/A rotors. So, I am considering my options if I choose, say, the 9.4:1 rotors.
edit:"FWHP?" Fly-Wheel Horse Power
Anyway, I would like something that is more for Auto-X, stoplight drags, cruising, etc. rather than out and out hp. All I have now are the s4 8.5:1 slugs. I would like to upgrade to something lighter with a bit more compression. FD rotors would be ideal, but all I have managed to find are 9.4 and 9.7:1 N/A rotors. So, I am considering my options if I choose, say, the 9.4:1 rotors.
edit:"FWHP?" Fly-Wheel Horse Power
#7
Originally Posted by jspecracer7' date='Jul 29 2003, 06:04 PM
what's wrong with the 8.5:1? so you can't rev to 10k...but you can sure as hell boost the **** out of it.
#9
Originally Posted by jspecracer7' date='Jul 29 2003, 01:04 AM
what's wrong with the 8.5:1? so you can't rev to 10k...but you can sure as hell boost the **** out of it.