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Old 12-06-2005, 09:22 PM   #1
Pythias
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Questions about Superchargers vs. Blowers and Turbocharged V8's

I know some about supercharger's and what all they do and how they work, but I do not knwo muhc at all about blowers, after a search of some few sites I did not come up with much information. From all I could gather blowers are more alike superchargers than turbo's but hwo do they work and what are the gains. Do blowers cost more? When compared which comes out on top, a blower or a supercharger? Also if you could just link me to a site with some of this information that would be jsut as helpful, I tried to search for one but came up blank, maybe I'm just typing in the wrong things.
Another thing I have been wondering for sometime is why I have never heard of or seen a Turbocharged V8 in real life or on-line. I have heard ti is Much harder and costly to turbo a V8 but wouldn't that be a great drag strip combo? V8-Low end power Turbo-Top End

Thanks
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Old 12-06-2005, 10:22 PM   #2
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Quote:
Originally Posted by Pythias
I know some about supercharger's and what all they do and how they work, but I do not knwo muhc at all about blowers, after a search of some few sites I did not come up with much information. From all I could gather blowers are more alike superchargers than turbo's but hwo do they work and what are the gains. Do blowers cost more? When compared which comes out on top, a blower or a supercharger? Also if you could just link me to a site with some of this information that would be jsut as helpful, I tried to search for one but came up blank, maybe I'm just typing in the wrong things.
Another thing I have been wondering for sometime is why I have never heard of or seen a Turbocharged V8 in real life or on-line. I have heard ti is Much harder and costly to turbo a V8 but wouldn't that be a great drag strip combo? V8-Low end power Turbo-Top End

Thanks
A blower, a turbocharger, a supercharger. Wait...blower, turbocharger, supercharger. Wait...what?
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Old 12-06-2005, 10:33 PM   #3
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"blower" is slang for supercharger usually, though I've heard people use the term for turbos, too.

As for never seeing or hearing about a turbo V8, you're awfully sheltered. There are MANY companies doing turbo V8s. Some of them are kinda famous: Callaway, Gale Banks, Turbonetics, Incon, etc.

The first production turbocharged car was a GM V8 (the '62 Olds Jetfire). One of the latest turbo V8 production cars is the Lotus Esprit V8.

But you say you haven't heard of them online?

http://www.google.com/search?hl=en&q=twin+turbo+v8

Hell, we discussed the factory turbo Trans Am with the 301 right here on this forum just a short time ago... Hell you even participated in the thread!

http://www.car-forums.com/talk/showthread.php?t=17712

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Last edited by ChrisV : 12-06-2005 at 10:36 PM.
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Old 12-06-2005, 10:49 PM   #4
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Quote:
Originally Posted by ChrisV
"blower" is slang for supercharger usually, though I've heard people use the term for turbos, too.
My point exactly.
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Old 12-07-2005, 04:10 AM   #5
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Quote:
Originally Posted by ChrisV
"blower" is slang for supercharger usually, though I've heard people use the term for turbos, too.

As for never seeing or hearing about a turbo V8, you're awfully sheltered. There are MANY companies doing turbo V8s. Some of them are kinda famous: Callaway, Gale Banks, Turbonetics, Incon, etc.

The first production turbocharged car was a GM V8 (the '62 Olds Jetfire). One of the latest turbo V8 production cars is the Lotus Esprit V8.

But you say you haven't heard of them online?

http://www.google.com/search?hl=en&q=twin+turbo+v8

Hell, we discussed the factory turbo Trans Am with the 301 right here on this forum just a short time ago... Hell you even participated in the thread!

http://www.car-forums.com/talk/showthread.php?t=17712


You are quite right I did forget about the Trans Am Turbo, I didn;'t really mean never, but rarely had I heard of it and even so wasn't that turbo V8 underpowered and not in production for too long? I might be wrong about that though but I thought I remembered something like 190hp stock. I had meant by more by actually seeing them or hearing of them done more so in real life. And most of those production V8 turbo's are kinda exotics aren't they? Might be why I haven't heard of them, although turbonetic's is a different story. I always heard of people supercharging their V8's, so is it not true that a turbo V8 would be a near perfect combo because of the low-end power and the turbo's high end? Also is it a great deal harder and/or expensive to turbo a V8 like I have heard?
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Old 12-07-2005, 03:24 PM   #6
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The reason you see V8s being supercharged (though frankly any factory effort other than the Cobra and Lightning are pretty exotic) more often is that the packaging of a non-centrifugal supercharger is extremely easy in the valley between the heads where the intake manifold is. centrigugal superchargers package much liek aturbo except that you dont' have any tricky exhaust plumbing.

And superchargers lend themselves to the lower rpm ranges of most large displacement engines. Part of the apeal of large displacemtn engines is teh large amounts of power rfom righ off idle. superchargers enhance that, turbos don't. Yes, that factory Trans Am was a bit anemic in the horsepower department, but it had a lot of torque. And for the era it wasn't too bad (not many cars had much power then, anyhow) Part of the problem was that it was carburated, low boost, and ran out of rpms early. Remember, teh turbo dosn't add more rpm, so it needs to work in the range the engine already operates in.

But, it can be done. Turbocharging v8s has been going on in the aftermarket for decades, and is about the same cost as superchargers. Kits have been available for a lot of engines, and for a while even sold through places like JC Whitney!

Follow that link from Google and look at some of the results...

http://www.turbomustangs.com/turbo_links.php

http://www.mez.co.uk/turbo1.html

http://www.turbosmart.com.au/twin_tubs.htm

http://www.globalcar.com/showroom/eleanor/154703.htm

http://www.fast-autos.net/lingenfelt...lter427tt.html



It's not uncommon at all.
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Old 12-07-2005, 07:10 PM   #7
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Thank you, so tell me then does this mean kinda if the engine is larger, and doesn't rev as high superchargers are more beneficial than turbochargers? But if the engine's rev decently turbo's would be more effective? I was just wondering drag strip wise for a V8 if turbo's would be as beneficial or more beneficial than superchargers, because the V8 has the low end power and the turbo the high-end like I said, seems to be a better combo than a V8 and a supercharger, maybe I'm wrong,
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Old 12-08-2005, 12:17 AM   #8
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Well the 4.0 litre XR6T kicks in at 2k rpm

and as for the strip, well hairdryers are frowned on in the top levels because in the wrong hands.........
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Old 12-08-2005, 05:30 AM   #9
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There are guys running 'stangs in nearly any class of drag racing with a turbo...Just pick up an issue of MM&FF or Mustangs & 5.0 and you'll see. Turbo kits are getting cheaper and cheaper for V-8's now(at least in the Ford realm) and they're gaining popularity like crazy. A base, entry level Vortech centrifugal s/c goes for around $1,900, but that's for 4-5lbs of boost and you can't run that on much more than a stock or very mild 5.0. Whereas you can get turbo kits for around $3-4k.

Superchargers do give you instant power because they start making boost instantly....BUT, centrifugal s/c's will keep making boost as long as you can keep revving the engine(assuming you don't sail past the maximum safe impeller speed, after you pass the maximum efficent impeller speed you can still make some power but intake air temps start soaring)...I've seen combo's where peak boost was achieved just before bouncing off the rev limiter(that's an improperly sized s/c head).

Bottom line, anything can be sized to work well in nearly any RPM range
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Old 12-08-2005, 07:04 AM   #10
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Well you could always run both supercharger and turbocharger.
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Old 12-08-2005, 07:23 PM   #11
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supercharger=blower
turbo= sucker
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Old 12-08-2005, 11:41 PM   #12
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Lets gets some things out in the open:

both superchargers and turbochargers compress air;
both are generically superchargers :- super as a physics term loosley means an elevated condition above ambient, in this case pressure;
a turbocharger gets it's name from the use of a turbine;
a properly sized turbocharger will perform very well;
about 99.9% of car discussion board members who profess to know about turbochargers actually know squat about them;
a supercharger is colloquially called a supercharger, blower or huffer;
a turbocharger is colloquially called a turbo, hairdryer or snail;
about 99.9% of expert sites provide plagiarised error ridden imfornation about turbochargers;
an oversized supercharger has increased compressed air temp, pumping and parasitic losses for equivalent duty of a correctly sized unit;
mix 'n matching turbocharger components (hybrid) for optimum performance is relatively easy and cheap compared to huffers;
fitting a turbocharger is relatively easy;
no one, but boy racers without a clue, pay full price.
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Last edited by Wally : 12-09-2005 at 01:25 AM.
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Old 12-09-2005, 03:11 AM   #13
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I see, my friend pointed out to me that a turbo is mroe expensive to tune or somethin, He said around 1k if someone were to turbocharged a 5.0. Is this true? Around 800-1000 to tune a turbo on a V8? Or is a tuning same on a V8 or 4cyc? N thanks for all the info Wally very helpful
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Old 12-09-2005, 06:47 AM   #14
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It all depends on where you go and what equipment is used. Engine size generally doesn't make a difference when it comes to tuning.
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Old 12-09-2005, 05:19 PM   #15
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Quote:
Originally Posted by Sick88Tbird
It all depends on where you go and what equipment is used. Engine size generally doesn't make a difference when it comes to tuning.

K, thanks for the info, much appreciated
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