I'd like to see someone experiment with a centrifugal blower on a Mini, a Vortech, Powerdyne or similar. Yes, they are better suited to bigger motors because they don't really alter the normally aspirated engine's torque & power curves, they tend to just give it a parallel shift & the Tritec does really benefit from the boost in bottom - midrange power & torque which the Eaton delivers.
I've seen the characteristics of the various superchargers summarised something like this:
Rootes Type (Eaton) - low efficiency, significant boost to low-midrange power/torque;
Positive displacement (Twin-Screw) - medium efficiency, significant torque/powerboost to mid - higher revs;
Centrifugal - high efficiency, pushes out torque & power at the top end.
It's interesting what the Porsche 928 community are doing with centrifugal blowers :
Supercharged 928 and Performance Porsche 928s 928 SPECIALISTS ONLINE STORE - 30,000+ 928 Parts - 928 SUPERCHARGER KITS! The ONLY source for 21st century power for your Porsche 928
Admittedly the standard Porsche V8 has big power & torque & it really doesn't need additional torque down low, unlike a Mini. It would still be interesting to see development of a centrifugal blower on a Mini with the appropriate tuning of the brerathing & fueling.
