Quote:
Originally Posted by Pro4Jackster
Do you think 9:1 pistons are the best choice for a supercharged motor? I'm no engine builder, but the ones I've seen built at JTran with lower CRs lose a lot of power. And with a supercharger, you cannot just turn up the boost to compensate like on a turbo. You are almost maxed out on CFMs with the Stillen Kit as is. Just something to think about. You could be giving up a substantial amount of power.
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Thought long and hard on this ... and tried my best to do as much research as possible.
With the lower compression it will allow me more boost and more hp at the top.
With the built motor I can go up to 15~16 psi with the 9:1 CR.
The down side is losing some at the bottom...but then again, that might allow me to leave at a higher rpm.
Without having done this though, it is a guessing game.
Thought of the 10:1 CP's as well, but that extra potential 50+hp with the 9:1's was just too tempting.
My Stillen SC'r has been upgraded to SI trim which ups the max boost to 22 psi and 1050cfm.
Vortech has a series of pulleys that will allow me to find the right one.
Hope the V3 SI will be up to the task.
If not then I'll have to go for the V7.
I'm still open for suggestions and input ... the pistons aren't in the motor just yet.
Any and all info welcome here...
Thanks,