Thread: Supercharger vs Turbocharger

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Originally posted by techinspector1
Do you have room for an aftercooler between the blower and the intake manifold?

I thought about that but here's the problem. I have and enderle injection hat on it now to keep the profile as low as possible. With that it's still about 11'' through the hood. At that hieght I'm borderline as far as visual obstruction. I'm building a tube chassis and the engine pan will be about 4" off the ground. And the body will be as low as I can get it. I know this car is going to draw a lot of attention as it is. I'm worried that if I go any higher I'm just askin' fer' a ticket. I thought maybe a little shot of nitrous MIGHT help. Nitrous if I understand it cools when shot through a nozzle. Or maybe that would just cause more problems ?

Originally posted by techinspector1
Well, I doubt that you would want to run the nitrous all the time, but you could run water injection. A 50-50 mix of water and alcohol should help to cool things down AND prevent detonation.

My plan for the nitrous shot would be for track use only. I don't anticipate too much trouble street driving since the blower will only make boost when I mash on it. And you know me....... I wouldn't do that on the street???
I haven't done too much research on water/alcohol injection. How do you set something like that up? What are the advantages/disadvantages?

Originally posted by techinspector1
pro, go to the top of the page and use the search feature. Type in water injection and you'll find 23 threads dealing with it.

Who make a good water injection system? In the meantime I'll keep reading old posts.

I've always used blowers, i've never had a problem with them, but i am looking into a future build using turbo power. Just curious to see how well they work and how they compare to a blower set up. Won't really know unless i try it out for myself, no matter what opinions i get. Just have to fnd the right application for it. It's also a room thing. The blower is an in your face deal well the turbos are more subtle, and you can hide them if building a sleeper.

Originally posted by Diamond
I've always used blowers, i've never had a problem with them, but i am looking into a future build using turbo power. Just curious to see how well they work and how they compare to a blower set up. Won't really know unless i try it out for myself, no matter what opinions i get. Just have to fnd the right application for it. It's also a room thing. The blower is an in your face deal well the turbos are more subtle, and you can hide them if building a sleeper.

You can hide a blower, just gotta have enough vertical clearence below the hood , can't hide the whine though.

Oh, I knew it had somtin to do with the cogs but, diddn't know it was that.

If you drive it alot, turbo (intercooled, of course) is the way to go.
If it's just a cruiser (i.e. <10k miles a year) I see no compelling reason to undo what you've already got money invested in. Both accomplish the same feat through different means.

Turbos are harder to "package" due to the piping for the intercooler, location of the intercooler and the physical attachment to the header(s).

Just my $.02 and you know I'm biased toward turbos!

Originally posted by techinspector1
Do you have room for an aftercooler between the blower and the intake manifold?

It's not an aftercooler, it's an intercooler because it sits between 2 compressor stages. The first stage is the blower and the second stage is the engine. A true aftercooler would be in the exhaust.

Turbos are FAR more efficient than Superchargers but as stated earlier are a little more difficult to package. Turbo lag is not as big a problem as it used to be. Select the right compressor and trim and all is hunky-dory.

If you do go the supercharger route you might want to think in terms of a centrifugal supercharger (or even two centrifugals) vs. lyhsolm or roots type systems. The centrifugals allow a lower induction system profile than do lysholm or roots type. Also centrifugals are easier to aftercool (intercoolers only go between compressors) than rootes or lysholm compressors.

Abe

Originally posted by The F.N.G.

If you do go the supercharger route you might want to think in terms of a centrifugal supercharger (or even two centrifugals) vs. lyhsolm or roots type systems. The centrifugals allow a lower induction system profile than do lysholm or roots type. Also centrifugals are easier to aftercool (intercoolers only go between compressors) than rootes or lysholm compressors.

Abe

From first post:
I''ve already got a 1071 BDS blower and an EFI converted Enderle injection hat. So, I'm just wondering. There would have to be some real compelling evidence that a twin turbo set up is superior to a blower for me to change directions now. But, I figure it doesn't hurt to keep my options open.

Check this out, it's a super turbo compound. You get the best of both worlds. This particular engine is supposed to go from 0-1800 rpms in less than a second with a generator attached. It makes 480hp at 1800 rpm which aint bad either.

Originally posted by 76GMC1500
Check this out, it's a super turbo compound. You get the best of both worlds. This particular engine is supposed to go from 0-1800 rpms in less than a second with a generator attached. It makes 480hp at 1800 rpm which aint bad either.

Now that's what I 'd call a visual obstruction in the ol' camaro.!!

Just did the math, that is 1400lbs of torque at 1800rpm.

Originally posted by Streets
I don't recall you saying you were runnin' a DIESEL in your Camaro.. Prozzzz!!

I'll just paint it black n' put some chrome on it HEHEHE

Well pro you know what i'm building so you already know my opinion on it

The way i see it is like this.......your motor and my motor sound very simuliar and they both should hit over 1000hp,for a car that will see strip AND street use if 1000hp aint enough we got some problems in da head

Roots blowers & turbos both have their advantages and their disadvantages but unless your building a car for something like ORLANDO (6 second zone)...stick with what ya got.

i have also tossed around the idea of hittin a small shot of nitrous just at the track becuase one of the blower books i have said puttin as little as 50hp of NOS to a blower motor can actually make the motor produce almost 100 more HP just becuase of the reduced intake charge temp since the blower over heats it to begin with. Dont know if thats true or not.......but i guess it "sounds" resonable??

Plus a big ol huffer stickin through the hood is the esence of power