turbo or supercharger?
23 April 2003, 10:03 AM
#2
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Not much lag with a Supercharger as the compressor is driven by the engine, but you lose some of the power you gain by having to drive the compressor through very high gearing.
You have some lag with turbo's because they have to spool, but it's free power in a way because it's driven by exhaust flow.
Turbo for me every time.
You have some lag with turbo's because they have to spool, but it's free power in a way because it's driven by exhaust flow.
Turbo for me every time.
23 April 2003, 10:34 AM
#7
No turbo lag with Bentley Turbo's (continental T). 600lb/ft...
So I guess turbo's work well on big engines too (6.75 litres). And then we have the new Mini Cooper S which is rather nippy, thats a small engine with a supercharger. Yet to drive one though.
My personal preferance is neither!! A race spec Lambo V12 running on a mix of meths and petrol
[Edited by ALi-B - 4/23/2003 10:36:42 AM]
So I guess turbo's work well on big engines too (6.75 litres). And then we have the new Mini Cooper S which is rather nippy, thats a small engine with a supercharger. Yet to drive one though.
My personal preferance is neither!! A race spec Lambo V12 running on a mix of meths and petrol
[Edited by ALi-B - 4/23/2003 10:36:42 AM]
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23 April 2003, 01:04 PM
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There are other reasons for using superchargers too.
1. They do not generate as much under bonet heat that you get from a turbo as its not been driven by exhaust gas.
2. They typically don't need a different exhaust manifold (only important if you are 'charging a car that isn't already).
3. They are a little more linear in their power delivery as their power is totally related to engine revs.
4. In a light and darty RWD car you don't get that moment mid corner when the turbo spools up and tries to throw you off the road LOL.
1. They do not generate as much under bonet heat that you get from a turbo as its not been driven by exhaust gas.
2. They typically don't need a different exhaust manifold (only important if you are 'charging a car that isn't already).
3. They are a little more linear in their power delivery as their power is totally related to engine revs.
4. In a light and darty RWD car you don't get that moment mid corner when the turbo spools up and tries to throw you off the road LOL.
23 April 2003, 01:14 PM
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How good a supper charger is and at what level it brings in decent boost is entirely based on the gearing set between the main pully and the suppercharger pully. They usually over spin at high engine revs unless you set it to boost at similar revs to a turbo, and at that point your far better using a turbo.
You could always fit an electric motor to a supercharger and have it driven by that. In that case it would give constant boost and wouldnt over spin. You could set it to what you want and it would only draw a steady electric current when it was on. I dare say its difficult to do.
The Lancia delta S4 group B rally car was suchercharged and turbocharged. It ran boost from the super at lower revs at switched over to the turbo at a certain threshold. Quite complicated and heavy, but worth it for the good boost curves before anti lags.
Jono
You could always fit an electric motor to a supercharger and have it driven by that. In that case it would give constant boost and wouldnt over spin. You could set it to what you want and it would only draw a steady electric current when it was on. I dare say its difficult to do.
The Lancia delta S4 group B rally car was suchercharged and turbocharged. It ran boost from the super at lower revs at switched over to the turbo at a certain threshold. Quite complicated and heavy, but worth it for the good boost curves before anti lags.
Jono
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