Supercharger vs. Turbos

[blackFbird_98]

Which one gives you a more effecient dollar to horsepower ratio... I dont see many superchargers running above 10-12 psi and see alot of turbos running 16-18 psi and was wondering why, do you have to push a turbo harder than a supercharger to see the same results or what?

[RicE-ter]

they are pretty close in price, about $3000(not sure, dont shop for them often)
there are superchargers that run above10(hell, funny cars run at 40lbs. of boost-which equates to 20 gallons per mile not miles per gallon), but im assumming most run 7 or 8psi so they dont have to run an intercooler and get somewhat decent gas still
im not sure why turbos are ran higher, even stock, like i heard(not sure agen) neon srt-4 runs somewhere around 18 psi. maybe its becasue its mostly small imports that run turbos and they have to run with more to see a significant increase
also where in the power band do you wanna push harder cuz im leaning toward a turbo. i ran against my frends 97 eclispe gst and we run almost even from a dead stop but he smokes me on the freeway

[98Camaro3.8]

See sticky at top of forum: http://www.camarov6.com/ubb/ultimate...c;f=4;t=002038

[38fury]

Well turbo kits are more expensive, if you can fabricate at a mediocre level you can make a turbo kit for under a grand, but blowers are a different story. Seeing as how you would have to buy a bracket or else make one for the blower, really if you know your **** you should be good.

[Mighty Thor]

Performance efficiency, Turbo hands down. Other than the back pressure it tends to creates, there is not that much parasitic lost compare to SC.

It can at full boost at 3600 rpm while SC is linear. Which is awesome for top end power. If your car has low end, you tend to want the top end as well. If you ever seen a dyno graph on a SC the HP keeps going up while the torque dips down at the top of the graph.

Now this is only true for centrifugal. Twin screws and roots can be at full boost at 3200 rpm. Twin screw can even be at 2800rpm. But its HP curves down at high rpm.

Cost wise, they are about the same. The head unit is the only thing that's very expensive on the SC. While piping, waste gate, turbo and others when you add all that will equal the cost.

The BD-11a, powerdynes second best SC compare to their XB-1a, is capable of 900 cfm. Which is alot more air flow than some of Paxton and Vortech's model. But the weak point is the bearings and belt. Updated bearings and belt is highly recommended. Strong point about those is less heat and denser air flow, even without the intercooler.

Because of the lack of heat from oil and exhaust it makes Powerdyne cooler to run. My co-worker has a custom T4 in his 300zx. After traveling only 12 miles to work, pop his hood and the first thing that hits your face is the heat. Plus he has to let his car run a minute or two before shutting it. I came 30 miles, pop my hood open and put my hand on the SC and I don't get burn.

So cost, they are the same. Performance wise, Turbo has the upper hand. Ease of installation and reliability, Supercharger.