I have been looking at Kenne Bell superchargers and other brands for Jeep 4.7L V8s(twin screw vs roots type). I known what a bypass valve does, but its there a way to electronically adjust the boost level on the fly? Similar to a rice burner turbo set up with boost controllers. I would like to run 3 boost settings, 3psi, 7psi, and ~10 psi. 3psi for everyday city and snow driving, 7psi for highway etc, 10 psi for putting rice to shame. Would it be possible to set up a boost controller enabling boost to be adjusted with the flip of a switch or with the push of a button. This would be much easier than changing pulleys on the supercharger. Excess boost could be vented to the atmosphere with a filter on it, maybe a turbo style blow-off valve and boost controller?? Any ideas? Anybody done it before? Thanks.

Uhh... Why not just turbo it? :sly:

Twin Screw superchargers create massive torque from 2000 rpm up. Also full boost comes right off idle. Turbos will have to spool up a bit before making full boost. I counted on using an big oil cooler for the engine and blower, and possibly intercooling (air-water) the air. Lots of plumming =(. Plus the turbo would mean a lot of custom fabrication.

With a properly sized modern turbo setup, lag isn't much of an issue. It could easily be spooled by 2000 rpm, plus they're just so much more efficient :biggrin:

The problem is there's no feasable way to do what you want with a supercharger. Mercedes had experimented with a magnetic clutch on the supercharger pulley that could turn the supercharger off until it was needed, that's the closest thing. I'm not sure but I think they scrapped the idea, although it's at least possible. But if you think a turbo is a lot of fabrication, I can't even imagine trying to build that.