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42mpg @ 16k RPM
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I have heard some cars using superchargers + turbochargers for a combination of immediate response / early spool and top end power. All for a huge sum of money of course. Anyone done this or know anyone who has done this? I think it's a wild idea.
 
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yeah, i also hear an Acura Teg had that set up, a supercharger with a turbo, i dont know if the guy was running N2O on top of that :rolleyes:

good luck with the piping:D
 

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There was a particularly wicked Nissan Skyline GT-R built up somewhere that was also twin charged...rumored to make about 1200 hp. Yummy. :)
 

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The version of Street Compact Car that had the "Ten Best Street Cars" had an Mr2 that was twin charged and it had NOS. To say the least the car wasn't very reliable and had troubles putting down the power!
 
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The concept seems to be to use a positive displacement blower for low-end and turbos for high end. N2O with a Hobbes switch + turbo does the same thing for a hell of a lot less money. And less plumbing. And no parasitic drag.
 
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I was told that city buses run on the supercharger/turbo combo. I know that some rally cars have used that type of setup with sucess.

Phil
 
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Nightmare6 said:
I know that some rally cars have used that type of setup with sucess.

Phil
What rally cars use that combo? I'm not saying you're wrong, its just that a WRC car would be really easy to keep on boost, so I don't see the advantage. Which makes/teams used it?
 

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how hard would it be to do that to a Supra??? :D

Just something moderate to keep some power before the turbos come on... or turbo...
 
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People don't do it because it's very hard to do properly, even the excellent HKS twincharger kit has bodge aspects and is very hard to tune, and the benefits are dubious. A computer with programmable outputs, such as a MoTeC is mandatory for a custom system as there is no point in having both the turbo and supercharger blowing at the same time. The idea is to start with the supercharger and transition to the turbo once the latter has reached full boost. To do this properly requires very tricky plumbing, a clutch for the supercharger and a lot of tuning to get the crossover right.

The theoretical advantage of twincharging is reduced lag as the supercharger theoretically has a better response than a turbo, in reality though even this is not really true.

In terms of outright power the turbocharger wins hands down, and a properly tuned turbo only system is better than a twincharger system for all sorts of reasons. Cost, practicality, durability etc. etc.

As an example there was an article twincharged Treuno featured in NZ Perfomance Car magazine a couple of years ago; take it from me that it never ever went past 5000rpm or so because Mr Greedy couldn't get the SCer and the turbo to work sequentially, and the 4AGZE is not really up to 30psi of superheated air . The owner eventally despaired, pulled all the gear off the car and sold it.

Cheers
KiwiMR2
 

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FastNSX said:


What rally cars use that combo? I'm not saying you're wrong, its just that a WRC car would be really easy to keep on boost, so I don't see the advantage. Which makes/teams used it?
Some old lancia cars used to run these setups. Now wrc cars run anti-lag systems which work a little better though they kill turbos.
 

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NVIOUS said:
The version of Street Compact Car that had the "Ten Best Street Cars" had an Mr2 that was twin charged and it had NOS. To say the least the car wasn't very reliable and had troubles putting down the power!
That car definelty wasn't reliable but the megulars integera is supposedly reliable. Often driven on the street I think. Obviously tuning is gonig to a huge issure for these setups but once a tuner can get it down it would/should work excellent. I'm sure single turbos weren't too reliable on supras 5 years ago. But with all of the tuning and time spent on research, hundreds of singles are daily driven and seldom break down.
 

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The mr2 was only put together a week before the competition. But you can see the potential is there.
 
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