Originally posted by Rdline1
because the jr supercharger isnt efficient past 11 psi. so why not put around 9.8:1 or 10:1 and get it up to around 9-10 psi?
Because generally superchargers don't have intercoolers. That's why I wouldn't run that high of compression.
Nor would I EVER run non-aftercooled 11psi from a supercharger... you're not only begging for detonation, you're blowing sickly hot hair into your block... more compression equals more heat, so upping the compression would be a BAD IDEA...
IF you are talking about an aftercooled 11psi, then it STILL wouldn't be better, since you can do that with a turbo anyhow....
What Im getting at, is that turbo's generally would like higher compression more, because usually superchargers don't have intercoolers.