Originally posted by Kremithefrog:

INCORRECT. Because the S/C is crank driven it will not reach full boost until a certain RPM,, you don't just sit a supercharge on the intake and expect it to instantly make boost. Ask anyone with a supercharger (plenty of duratec owners on here) I believe the vortech for the duratec doesn't reach full boost until over 3k rpm. You can easily setup a turbo to reach full boost at the same place a s/c does or before. Not all turbos have lag, they have something else, can't remember what it's called, which is the point before they reach full boost but it is NOT LAG. A small turbo with a good setup will not have any lag. And as low compression is good for s/c AND turbo. High compression is good for n/a and nitrous... Why is this even being discussed,, you're not even gonna do it anyways.



Actually a S/C has it's turbine spinning all the time in sync with the engine, cutting the lag time way way down. You are right about the super charger not reaching full boost until a certain RPM because of the rate of speed of the pulleys, but the same applies for a turbo. Since the turbo turbine is spun by exhaust gasses, you will also need to reach a certain RPM, or a certain amount of exhaust pressure to spin the turbine to achieve full boost. Any turbo setup will have more lag than a S/C just for the fact that it's not constantly spinning like a S/C. Unless you weld your exhaust exit(s) closed, which I wouldnt recommend.

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