Supercharger vs. Turbocharger Options

[94GTMD]

This may seem obvious to you all but what is the diffrence between a supercharger and a turbocharger? what are the pro's and con's of both?

Thanks for any info!!

[5sfeTurbo]

I believe superchargers pull air out of the engine while turbos put more in, Superchargers will rocket of the line while turbos need more time to spool. So the faster you go the more gradual you are pulled back(pending your setup).
I think thats right, if not dont be an ass.

[Uppitycracker]

Actually super chargers and turbo chargers work on the same basic idea, accept a super charger is spooled off the crank which means instant boost but loss in overall power. And the turbo spools off of otherwise wasted exhaust flow, which delays the boost but doesnt cut into engine power.

[5sfeTurbo]

there you go.

[1bwilson]

Turbos are also ajusted via a boost controler which controls the amount of air going to the waist gate . While super chargers are controled by pullys. Want more boost change your pully.

-Bryan-

[Aus]

what kindof gain from a supercharger?? (3sge)

[Supersprynt]

Supercharger
An air compressor designed to force air, under pressure, into the cylinder. Can be mounted between the carburetor and cylinders or between the carburetor and the atmosphere. It boosts the power of the engine.

Turbo Charger
An exhaust powered turbine super-charger. Turbochargers always use centrifugal-flow compressors, which operate efficiently at the high rotational speeds produced by the exhaust turbine.

This post has been edited by Supersprynt: Sep 16, 2003 - 10:06 PM

[FallenHero]

turbo is the better route. They are far more tuner friendly... You can get a electronic boost controller, and make your car run virtually stock, or crazy 'engine blowingly' fast.

A super charger will also cost you farmore than a turbo because it's really not That hard to turbo a car if you know what you're doing. A supercharger however is another world.

Jon

[NavyCelica]

Can you do both on an engine?

[macavely]

[FallenHero]

Like Mac said, it can be done, but.... it's useless on our engines.

The point of 'twin charging' as I have heard it called, is to relieve the spool up time of larger turbochargers. Little four bangers don't use these large turbo's, so it's useless. If you were driving a Rather evil drag race car with a big fat T-4 turbo, you could supercharge it and have boost straight off the line with the SC and boost latter after the engine gets up to speed with the Turbo. Makes for a big smile, and a small wallet.

Jon

[Kwanza]

Also...unless the motor is built to handle the twin boost, the S/C has to me made to stop boosting once the turbo starts boosting, or else, let's say you have a motor built for 20 psi, and you have a s/c boosting 12 psi and a turbo boosting 15 psi... then you'll have too much boost to handle...and blow up...hehe...simple ehh?

I think there was a picture of a 1GGZTE on Bill Sherwood's page...a supercharged and turboed 2.0 inline 6... preety awesome...;]

http://www.billzilla.org/rallycar.htm

[95ST]

[FallenHero]

Yea... I'll ok' that to some point, but I don't know what you mean by 'rebuilt' Are you talking about rebuilding the engine? If so you just do that to get it boost ready (ie. lower compression). You would have to do the same with the Supercharger if you were going to run much boost.

The only real problem with a turbo is it does actually affect engine life more than a SC. Other than that, My opinion is turbo all the way!

Jon

[95ST]

Ive been told that turbos often have to be rebuilt. The wheel inside can hit speeds upward of 80,000 rpm and the temp can get quite high. Even with oil injection you quite possibly will have to rebuild a turbo and it is not cheep to do. Most superchargers do not have to be rebuilt because they do not spin at the rediclious RPMs. One exception to this however is the G60 supercharger on a corrado they are usually good for about 60-80 thousand miles. But they have a stupid design with way to much moving mass.

[97sccelica]

[FallenHero]

Yea, e-bay has turbo re-build kits all over the place.

Jon

[94Toy]

I had asked this question about a month ago

[Guest_Matthew_*]

ok everyone who is saying that superchargers are better because of the lag you get from turbo's i guess you must not know that not ALL turbos have lag.

the bigger you go for the turbo the more power it can produce but you have to get higher into the rpm's for it to start spooling enough to feel anything..

there are many turbo's that dont have any lag

such as the ct26, ct20b (both of which come stock on certain toyota vehicles), etc. i could go on but i wont

only time you get lag is when you have a humongous turbo like a t67 or t78 (greddy) but then there are things you can do to help with that.

also this topic has been discussed in the past with a boatload of opinions. in the end turbo is better.

[Celica2085TA]

What is a waste gate and what does it do? I know it makes a cool hissing noise when the engine is shifting is it supposed to let out pressure?