I've searched the threads & there is a lot of good & a lot of dated information in the old threads.

the reason I'm considering a centrifugal supercharger is:

Linearity of boost.
Less heat under the hood.
Ease of tuning.

I know this has been a hot topic in the past, but I wanted to create a new thread, hoping to have people confront the argument using contemporary source material & data.

I believe a centrifugal supercharger could be just as affordable, if not more affordable than a turbo setup, that could yield similar performance.

Both technologies have came a long way in the last few years, but some issues & limitations remain.

we can argue efficiency, but we are talking about a 20+ year old car using a 20B, so peak efficiency isn't the name of the game.

I'm looking to make power that warrants the troubles of going with a 20B, but would also like be able to drive it on the street.

Car will be a street going weekend car with the occasional day on the track.

 

Sure, just size it like you would size a turbo to the rotary ie, 600rwhp SC for V8 would be 400rwhp for rotary or a 1,000rwhp SC for V8 would be 666rwhp for rotary. Yeah, the SC is going to be pretty big!

Next, be sure not to stress the front bearing- you can literally wipe it out by over tightening your stock alternator belt. So, use a (loud) Gilmer drive.

 

It would still be a shame to be wasting all those magnificent rotary exhaust pulses and heat in favor of 100hp parasitic drag.

 

thanks, the front bearing issue is a solid piece of advise to consider.

I do also recall in the past that you must deduct 33(ish)% of the overall power, for spec.ing a supercharger. Is that due to parasitic power loss to drive the compressor?

 

the rotary eats 1/3 more air for the same power as a piston engine.. so 1000hp of piston air is only 670 on a rotary.

**** factor hit the nail on the head. the point i've tried to drive home any chance i get... the supercharger doesn't belong on the rotary..not without a turbo in there somewhere picking up that hot wasted exhaust gas.

a lot of power the supercharger builds will pass thru the engine and into the exhaust... turbines recapture that missed energy...