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Old 02-09-2001, 06:33 PM   #1
subisrule
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Question Super turbocharger?

I really don't want to sound like a retard but would it be possible to use a supercharger and a turbocharger at the same time granted you had all the engine space you needed?
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Old 02-09-2001, 06:35 PM   #2
Jon Bogert
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Sure. Lancia Delta S4. Bypass valve that switches from the super to the turbo after the turbo spools up.
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Old 02-09-2001, 06:49 PM   #3
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Sure, you can feed them sequentially.
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Old 02-09-2001, 10:07 PM   #4
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Search, there was a similar topic discussed in the past.
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Old 02-09-2001, 10:27 PM   #5
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Why?? It would be possible, but why not just use all the money from the supercharger to get a really nice turbo with beefed up internals. It would be a lot easier to setup.
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Old 02-09-2001, 11:57 PM   #6
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Besides the cost, do you think there would even be enough room under the hood for both? It's kinda cramped stock, and the turbo'd ones I've seen look pretty packed. Might be able to hang the s.c. like the alternator, but would there be room for the plumbing? Just some grub for your brain.
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Old 02-10-2001, 08:32 AM   #7
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Why? Well the simple answer is...no lag. You get the advantages of both. Instant boost with the supercharger, and increased boost on the top end with the turbo. Of course there are a few disadvantages too. Wieght being one of them.
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Old 02-10-2001, 09:34 AM   #8
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or.... twin turbo's. sequential, of course.
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Old 02-10-2001, 11:02 AM   #9
subisrule
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Thanx for the info. It's just a question I've been pondering for a while.
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Old 02-10-2001, 07:10 PM   #10
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The Army has an Eight wheel drive vehicle called the HEMMET that is powered by a HUGE detroit desil. The DD has a supercharger fed by a turbo charger. That thing is the size of a house trailer but has better take off than most family cars.
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Old 02-10-2001, 08:02 PM   #11
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I think you’re referring to what’s called the HEMTT (Heavy Expanded Mobility Tactical Transport).
This monster is powered by a turbo only, AFAIK – but the army designates it as a turbo-supercharger, in the sense that the charge is supercharged by a turbo.

It looks imposing doesn’t it?

<IMG SRC="http://media5.motorcities.com/99KAB533526749A.jpg" border=0>
<IMG SRC="http://media5.motorcities.com/99KAB533526749C.jpg" border=0>

[This message has been edited by edekker (edited February 16, 2001).]
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Old 02-11-2001, 08:49 AM   #12
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i saw the one of those monsters go out of control on a steep hill in the balkans. it slid into the back of a Bradley fighting vehicle doing around 30mph. it turned out the brakes had failed. amazingly no one was hurt.
it was left overnight in a ditch, only 80 feet from the perimiter of our base camp; and the locals still managed to steal all the fuel out of it before the sun came up.
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Old 02-11-2001, 10:13 AM   #13
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Don't superchargers run from idle to redline? So at some point of the powerband they will overlap and there goes you motor. I would go for a Nos Turbo setup. Nos for the launch and a nice big turbo for the higher end.
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Old 02-11-2001, 03:34 PM   #14
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HKS had a supercharger/turbocharger kit for the early Toyota MR2(86-89). It was a turbocharger kit made to work in conjunction with the stock supercharger.

Good concept for linear response to offset a big turbo set-up. Not very feasible on some cars due to space constraints and not very cost effective for manufacturers.

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Old 02-11-2001, 08:39 PM   #15
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That would be the truck, but I can assure you it is BOTH. It has a big fat roots type blower in between the cylinder banks and a turbo feeding right into it. I drove one a few times and loved every min. of it. Most of the time I got to drive my FOX which is a nuke, bio, chem warfare wagon with all sorts of test goodies for chemical, radiological and biological hazards.
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Old 02-12-2001, 05:51 AM   #16
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Pipercub,

Interesting! Ok... I stand corrected – sorry about that. I admit it's been a while since I read up on them.
It must've been fun driving that truck. Lucky guy... It sounds like you can get to drive some interesting wheels.

Ed.
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Old 02-12-2001, 09:22 AM   #17
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There was a guy Rick Dobbertin, back in the late 70's, early 80's from the Springfield VA area, that ran a '63 Chevy II, big block chevy, twin turbos, GMC-6-71, fuel injected and nitrous. And the damn thing ran like you wouldn't believe! And all before engine managment systems! And if I recall correctly, it was Car of the Year for quite a few hot rod mags. It made all our best efforts seem rather puny when he'd show up.
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Old 02-12-2001, 09:54 AM   #18
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Talking

Suzuki Escudo Pikes Peak car.... that's all I have to say on this subject!
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Old 02-12-2001, 10:12 AM   #19
Fred Fredburger
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I occasionally (once or twice a year) see one of those HEMTT's driving down the roads here in town. We've got a army reserve base in town so you see some camo hummers and one or two of those HEMTTs. Do they make smaller scale HEMTT-type vehicles? I don't recall the ones's around town being so big, but I do remember the one's that I've seen have 4 wheels up front that turn.
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