Super Charger vs Turbos - Ford Mustang Forum
 
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post #1 of 10 (permalink) Old 05-19-2010 Thread Starter
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Super Charger vs Turbos

Hey I have a question for everyone. I keep reading that a turbo is cheaper than a super charger! From what I have read that is not true! A Kenny Bell four my Cobra runs about 3,800 for the kit. Most turbos run about 5,000. Im I missing something or what? I still like the super charger because of the low end boast and power! Any input on this would be great thanks.


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post #2 of 10 (permalink) Old 05-19-2010
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it just really depends because turbos are actually cheaper in the long run as long as you keep them maintained. also they are cheaper when it comes to gas to because the less your into boost the less fuel you will use with the supercharger you always have boost going into the motor.

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post #3 of 10 (permalink) Old 05-20-2010
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Originally Posted by 93ksstang View Post
it just really depends because turbos are actually cheaper in the long run as long as you keep them maintained. also they are cheaper when it comes to gas to because the less your into boost the less fuel you will use with the supercharger you always have boost going into the motor.
Not true, just like a naturally aspirated car, when you're using light throttle, a supercharged car still pulls vacuum, not boost. As long as you keep the boost gauge in the vacuum side (which is normal during part throttle driving), you're not using any more fuel than a naturally aspirated car.

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post #4 of 10 (permalink) Old 05-20-2010
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Originally Posted by Bullitt5339 View Post
Not true, just like a naturally aspirated car, when you're using light throttle, a supercharged car still pulls vacuum, not boost. As long as you keep the boost gauge in the vacuum side (which is normal during part throttle driving), you're not using any more fuel than a naturally aspirated car.
well, maybe a little bit, considering the drive belt also has to turn the supercharger pulley. that's why 8psi out of a supercharger kit will net you significantly less horsepower compared to an 8psi turboed kit. there is what we call "parasitic loss" with superchargers. although these days they are making superchargers more and more efficient to deal with the parasitic loss.

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post #5 of 10 (permalink) Old 05-20-2010
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Turbos are generally more expenive to purchase and install, because they're a little more complicated. Take a look at the parts list provided with each complete kit and you'll see what I mean.

On a street car, a turbo is generally more efficient, and will adjust for things like air density and altitude. Properly designed, you'll get 12 pounds of boost at sea level, and 12 pounds of boost at 11,000'. That's a nice feature. Also, if you want to switch between gasoline and E85, the turbo can be easily adjusted for that.

In the past, turbos were for road racing and blowers were for drag racing. Technology has improved over the years, so those lines have blurred a bit.

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post #6 of 10 (permalink) Old 05-20-2010
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IMO a turbo makes more power, but its a more involved install and more expensive. If you want sick power, Twin Turbos are the way to go.

A turbo runs off the exhaust so there is no parasitic drag loss like with a supercharger.

But superchargers like the E-Force i'm having installed, give you nice low end torque for off the line neck snapping torque. Thats what i think of when i think supercharged, so thats why i got it

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post #7 of 10 (permalink) Old 05-20-2010
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supercharger all day!!!!!!!! specificly a procharger
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post #8 of 10 (permalink) Old 05-20-2010
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Quote:
Originally Posted by mell0 View Post
well, maybe a little bit, considering the drive belt also has to turn the supercharger pulley. that's why 8psi out of a supercharger kit will net you significantly less horsepower compared to an 8psi turboed kit. there is what we call "parasitic loss" with superchargers. although these days they are making superchargers more and more efficient to deal with the parasitic loss.
I was referring to the "no boost at low throttle" comment and saving gas because it wasn't in boost. Just pointing out that was the case with a supercharger as well.

Parasitic loss sucks. All those stupid things our engines have to run. Things like power steering, water pump, alternator, air conditioning. Even the driveshaft, clutch and rear end causes parasitic loss. Stupid parasites.........

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Under Reconstruction for RS275 Drag Radial Class
Pushrods and Powerglide Coming Soon

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post #9 of 10 (permalink) Old 05-20-2010
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Quote:
Originally Posted by Bullitt5339 View Post
I was referring to the "no boost at low throttle" comment and saving gas because it wasn't in boost. Just pointing out that was the case with a supercharger as well.

Parasitic loss sucks. All those stupid things our engines have to run. Things like power steering, water pump, alternator, air conditioning. Even the driveshaft, clutch and rear end causes parasitic loss. Stupid parasites.........

gotcha. yeah for the most part i lost like 1-2mpg. but honestly, it was 100% worth it. being able to step on it and absolutely fly never gets old. well it eventually does, but then more power is just a pulley swap away!

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Yea supercharger is def less expensive. I always thought supercharger would be more reliable for a street car, Im somewhat biased but I say go with the KB, save some bucks and still get some crazy low end torque pinning you back into the seat like you want. But a a turbo will make some pretty nasty power too.

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