1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Supercharger /Turbocharger

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Old Jul 22, 2002 | 12:54 AM
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Supercharger /Turbocharger

Could someone please tell me the difference between a supercharger and a turbocharger?

Thanks!
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Old Jul 22, 2002 | 09:00 AM
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Click on this link to learn the difference between a turbocharger and a supercharger.

http://www.howstuffworks.com/question122.htm
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Old Jul 22, 2002 | 06:04 PM
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Turbocharger uses the engines power to work, usually at high rpms and the supercharger has it's own power source, ie, not the engine.
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Old Jul 22, 2002 | 08:10 PM
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Originally posted by 85RX7GS
Turbocharger uses the engines power to work, usually at high rpms and the supercharger has it's own power source, ie, not the engine.
900+ posts and you answer with this!!!! You must hang out in the lounge alot!!!!

A turbo uses exhaust energy (ie heat and air flow) to spin a turbine wheel. This turbine wheel is attached to a compressor wheel through a shaft. This shaft is either supported buy engine oil pressure (like and engine bearing) or a ball bearing like the ones on skate board wheels. This compressor wheel draws air in compresses it and the forces the air into the engine. It is not uncomon for turbo to spin 70,000-90,000 rpm, even more.

There are two different types of supercharges one is called a roots blower and the other a centrifugal supercharger.

A roots blower mounts on top of the eninge between the air/fuel induction (ie Carb) and the motor. This type of supercharger uses two impellers to generate a vacume resemebeling a larger displacment engine. If you were the carb on a 350 chevy (for example) you would think you were sitting on a big block. These are the ones you see sticking out of the hoods of old muscel cars.

A centrifugal supercharger is basicly the compressor side of a turbo, drive through a geared reduction off of the engines crank shaft.

Supercharges are limited in their rpm cappacity since they are directly coupled to the engine. Therefor thier abbility to produce monsterous top end power is limited
How-ever they are much more benifical in boost response, low rpm and midrange power since there is no waiting for the device to speed up to start moving air, they move a specific amount of air for a given engine rpm.

A turbo charger, being driven by exhaust flow does have to wait for the exhaust to begin flowing before it can begin to produce power. But, since it is not directly coupled to the engine it top end performance is not limited by the eninge rpm.
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Old Jul 23, 2002 | 04:57 AM
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Moremazda -a good responce.
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Old Jul 23, 2002 | 08:53 AM
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Originally posted by moremazda


900+ posts and you answer with this!!!!

That 'essay' you wrote is summarized in my first post.

Originally posted by moremazda


You must hang out in the lounge alot!!!!

What's that supposed to mean?
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Old Jul 23, 2002 | 10:55 AM
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From: 3OH5
Originally posted by 85RX7GS
Turbocharger uses the engines power to work, usually at high rpms and the supercharger has it's own power source, ie, not the engine.
Originally posted by 85RX7GS
That 'essay' you wrote is summarized in my first post.
Not Exactly.
    The Supercharger does NOT have it’s OWN power source, As it is obviously using the engine's pulley for it.


    A NOS system would be its OWN Power source though.
    since it is separate and apart from the engine, and does not cause any kind of parasitic drag.

    Last edited by Directfreak; Jul 23, 2002 at 10:58 AM.
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    Old Jul 23, 2002 | 10:56 AM
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    WTF? Double Post.

    Last edited by Directfreak; Jul 23, 2002 at 10:58 AM.
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    Old Jul 27, 2002 | 01:05 PM
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    smnc's Avatar
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    From: Acton, Ontario, Canada
    Originally posted by moremazda
    A roots blower mounts on top of the eninge between the air/fuel induction (ie Carb) and the motor. This type of supercharger uses two impellers to generate a vacume resemebeling a larger displacment engine. If you were the carb on a 350 chevy (for example) you would think you were sitting on a big block. These are the ones you see sticking out of the hoods of old muscel cars.
    One small clarification...
    Some roots type superchargers are designed for port-injected engines, and go between the throttle body and intake manifold...
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    Old Jul 27, 2002 | 01:31 PM
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    From: So. Arlington, TX!!!
    Either style SC also puts a severe load on the front housing eccentric bearing it was never designed to see...which is why sterling will eventually be running a tri-turbo set up with outboard IC's....
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    Old Jul 27, 2002 | 02:34 PM
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    From: Kamloops BC Canada
    Originally posted by Directfreak
    WTF? Double Post.
    What's this? 1500+ posts and you still can't avoid double posting? WTF?
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    Old Jul 27, 2002 | 06:25 PM
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    From: 3OH5
    Originally posted by Keaponlaffen


    What's this? 1500+ posts and you still can't avoid double posting? WTF?
    I usually edit my posts for grammar, spelling, links, etc, and I accidently may hit the quote button instead of the edit button.

    Once you hit submit, its on there. So the answer is yes, I fucked up.
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    Old Jul 27, 2002 | 06:37 PM
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    From: Trying to convince some clown not to put a Holley 600 on his 12a.
    Originally posted by mar3
    Either style SC also puts a severe load on the front housing eccentric bearing it was never designed to see...which is why sterling will eventually be running a tri-turbo set up with outboard IC's....
    NOT gonna happen, bitch!
    I told you; I'm gonna cross country, show up at yer door, and make you wanna pay me to do it to yer car!
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    Old Jul 27, 2002 | 08:05 PM
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    Directfreak- I thought it was possible to use edit when a post was messed up?
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    Old Jul 27, 2002 | 08:09 PM
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    Originally posted by Directfreak
    WTF? Double Post.
    Slacker post ***** LOL
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    Old Jul 27, 2002 | 08:11 PM
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    yeah, I think he's just trying to cover it up with a "double post"

    *start chant* "Post-*****, Post-*****"



    Jeff
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    Old Jul 27, 2002 | 08:17 PM
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    Directfreak's Avatar
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    From: 3OH5
    Originally posted by Paul Fitzwarryne
    Directfreak- I thought it was possible to use edit when a post was messed up?
    Of course.

    You CAN EDIT and accidental post. (which I did)

    You CANNOT DELETE and accidental post though.

    I am not a post *****.


    I am however, an attention *****.
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