Quote:
Originally Posted by FreshFRS
good point about fuels. tuning window becomes very small at high compression + higher boost levels when using pump gas . i only use 94 from chevron up here seems to be the most consistent fuel i can find with no ethanol. i'm planning hopefully to run 12psi on pump gas on a Twin-screw supercharger and i think i will be okay from what i've seen.
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Whoa whoa whoa, you have ethanol free 94? Blend it up to 10% (or even 20%) ethanol and get some ~96!
And @
subatoy no there is no way of calculating torque, even if you knew exactly how much air was going through. You could attempt to get in the ballpark by going off the amount of air going through the engine, but once you increase the amount of air fed to the engine by any significant amount you're changing a lot of things.
@
Tansey86 it's not that simple. Going from 8 to 9 is a lot bigger than going from 12 to 13, and higher compression ratio increases friction and cooling loss as well. It also depends on the temperature of the intake air, which can vary a lot (summer vs. winter, that's 10% absolute temperature already, and in a hot heatsoaked engine bay, even more).