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Posted

And here's more:

 

A centrifugal supercharger optimized for max top-end boost and power usually won't build low-end boost as quickly as a rotor blower. While the rotor blower builds boost early and maintains it as rpm increases, a centrifugal blower builds boost exponentially--in other words, doubling the blower's rotational rpm causes the boost to quadruple.

 

From http://www.carcraft.com/techarticles/93500/index3.html

Posted

Plus it's easier and cheaper to change the boost on a turbo - just bleed the wastegate or install a boost controller. On a supercharger you'll need to change pulleys and gears and stuff, which quickly goes into the "too hard basket".

Posted

Umm. Well superchargers are run off the pulley mechanically. I suppose that website did mention that they now have intake bypass systems (I was not aware of this previously), so you can set the supercharger up to reach full boost a lot earlier, while not overboosting towards the top of the rev range. With one of these I suppose you can put in a boost controller of some sort of adjust when it starts to bypass?

Posted (edited)

you've never seen a centrifugal blower? dude, come to lismore! the "big mod" down here is to buy a crappy old VR ute and put a CAPA kit on it worth as much as the whole car! you have to have a big frontmount hanging out the front bar tho (doesn't matter if it's hooked up or not) and you have to tension the blower belt REALLY tight so you can hear the whine from 2 blocks away, so everyone in the ampol carpark says "he must have a supercharged vehicle. fully sick. bro." :D

Edited by Super Jamie

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