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Old 07-12-2006, 11:00 AM   #1
TheDocta
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Question Pro Charger or Super Charger

I know that most cars on here are turbo'd but I was wondering what is the difference between a pro charger and a super charger
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Old 07-12-2006, 11:04 AM   #2
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I believe that ProCharger is a brand name. But, I think most people are refering to a centrifugal supercharger when they say ProCharger. That being a supercharger that looks like a turbo that is driven by a belt.

The other style is a roots type of supercharger. These are the huge blowers that you see on drag cars where the blower sits under carbs or fuel injection.
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Old 07-12-2006, 11:05 AM   #3
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Quote:
Originally Posted by russd32
I believe that ProCharger is a brand name. But, I think most people are refering to a centrifugal supercharger when they say ProCharger. That being a supercharger that looks like a turbo that is driven by a belt.

The other style is a roots type of supercharger. These are the huge blowers that you see on drag cars where the blower sits under carbs or fuel injection.
That's my understanding as well.

The procharger is gaining wide popularity in the Muscle Car world as a cheaper/easier alternative to a full-blown supercharger.
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Old 07-12-2006, 11:06 AM   #4
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ProCharger


8-71 Blower
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Old 07-12-2006, 11:16 AM   #5
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A ProCharger is a centrifical superchager made by ATI. Same function as those made by Votech and Paxton. ATI distinguishes their ProChargers by using air/air intercoolers, the others use air/water or no intercooler.

As far as function, a roots style blower (this includes old style lobed roots as well as modern screw compressors (Eaton, Whipple, Lysholm) is a positive displacement supercharger. Pressure is created only in the manifold. A centrifical supercharger creates boost directly at the outlet, requiring a blow through design if being used with a carburator.

Centrifugals also have the disadvange of having boost be directly proportional to compressor speed... the faster you spin the supercharger, the more boost you get. Peak boost will be had at your maximum engine speed. This limits the low-end torque production that roots style blowers, which don't suffer from this, are known for.

Centrifugals are easier to package, easier to intercool, have less parasitic draw on the engine, and are easier to adapt to fuel injection, espically in an aftermarket installation. Even blow-through carb'd designs have come a long way in recent years. Roots blowers tend to give better power delivery.

Last edited by MrHorspwer; 07-12-2006 at 11:23 AM.
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Old 07-12-2006, 11:18 AM   #6
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The reasons Prochargers are gaining popularity in the muscle car world is they already have the low end torque. But their top end sucks, the procharger is small and easily installed. Doesn't need any additional exhaust plumbing.

A regular supercharger be it roots or twin-screw, has to be after the throttle body. Pretty much replacing the intake manifold, harder to intercool. Bigger, heavier, more expensive. You'd have to decide if you want instant reponse and low end torque over top end power.
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Old 07-12-2006, 11:27 AM   #7
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The tree main types are Roots(big-inefficent-super-drag-FTW-super-low-rpm-boost-thingy), centrifugal(belt driven turbo) and twin screw(like Lysholm and Whipples)
I would suggest either centrifugal for ease of install - just another pulley your crank has to turn but you don't have to buy a new intake - or the twin screw.
Cobras and all of the GM supercharged cars a twin screw - not quite as efficent as centrifugal, but has the low rpm boosting of the Roots. This will probably cost the most, but man they sound cool screaming down the road.
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Old 07-12-2006, 11:33 AM   #8
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Cobras are not twin screw.
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Old 07-12-2006, 11:36 AM   #9
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I haven't heard of a GM vehicle using a twin-screw either. They have been using Eaton Roots superchargers, even on the Cobalt SS Supercharged.

They do scream though.
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Old 07-12-2006, 11:48 AM   #10
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Quote:
Originally Posted by Master2192
I haven't heard of a GM vehicle using a twin-screw either. They have been using Eaton Roots superchargers, even on the Cobalt SS Supercharged.

They do scream though.
I think the Redline Edition SKy/Solstice GXP uses a twin--screw, doesn't it?
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Old 07-12-2006, 11:51 AM   #11
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Technically, the Eaton blower is a twisted lobe roots supercharger. A Lysholm is a screw compressor.

The principles are the same as both are positive displacement blowers. Screw compressors are a bit more efficient.

Eaton


Lysholm


Quote:
think the Redline Edition SKy/Solstice GXP uses a twin--screw, doesn't it?
They're both turbo.
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Old 07-12-2006, 11:59 AM   #12
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Quote:
Originally Posted by Hazdaz
I think the Redline Edition SKy/Solstice GXP uses a twin--screw, doesn't it?
Twin scroll turbo.
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