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Centrifugal or Roots

  • Centrifugal (Vortech S or T trim

    Votes: 8 38.1%
  • Roots (AED or SVO)

    Votes: 13 61.9%

  • Total voters
    21
1 - 13 of 13 Posts

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Discussion Starter #1
Car is a daily driver (less than 10 miles a day though), and a weekend drag duty car. My realization thread has sparked some controversy in my own mind, so now I'm trying to make the decision between the two for a forged PI engine. Pros and Cons please.
 

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02 Explorer Pioneer
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If it is primarily a driver I would go roots if you want better drag duty go vortech
 

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On Probation
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2,019 Posts
I like the roots type blower. It just depends on how much power you want to make. 360 rwhp is about the total limit that the aed kit can produce with heads and cams. If you are looking for more like 400+ rwhp then get the Kenny bell whipple charger system for the 02 mustang gt and be prepared to do a bit of fabrication.

This is how I should have handled it. Build you motor to make as much power as possiable. I would get a forged pistons and rods with a set of renegade racing heads and VT blower cams with Kooks 1 5/8 headers and art dual exhaust. When funds premit Then get the kenny bell blower.
 

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I would just ask what your goals are with the car on the strip? If a 13 sec car is it, go with the Roots or even N/A. If you want to go deep into the 12's and beyond, then go centrifugal.
 

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Discussion Starter #8
Definately deep 12's. If my plans were 13's, I could do that without an power adder. I should have the longblock complete and ready to roll sometime in December, hopefully some better intake choices will be out by then, in case I go with the centrifugal. This engine should be able to handle as much boost as I'll need to accomplish my goals of low 12's. Getting the heads, cams, supercharger and tune matched up to maximize power is looking to be the difficult part right now.
 

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A low 12's, street driven, daily driven car... don't want much do you. :rofl: :rofl: :bowdown:

Seriously though, here's my opinion (keeping in mind I’m more into “highway” than “drag strip”, so I’m probably a little biased toward the roots):

Go with a roots and a small (fogger type) nitrous shot at the strip.

That way you get the nice low end power, reliability, and engineered setup of the roots, but at the strip you can "dial in" whatever times you want. I think with an AED or SVO and a 100 hp shot, low 12’s would be very easy (but I could be wrong). And by going with the nitrous at the strip only, you save the wear and tear on the engine with just the daily “tooling around”… but still with a mid 13 second car. :D

Again, just my opinions for your application. :thumbsup:
 

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I think with a well built AED setup and a 100 shot of nitrous you could easily net 11's. Look at the times some the guys on here are making with just the AED alone. Mid 12's are within reach with untouched heads and PI cams. You'll be well past that with what it sounds like you have planned.

I personally belive the NOSsle setup would work best with the AED but I could just be biased. :zdevil:

In your other post you mentioned trying to find an AED kit. Watch Ebay, they pop up every so often.
 

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Only you can prevent modular fires
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1,446 Posts
Even though I have 3 cars with Centrifugal blowers or as my boss calls them (belt driven turbos) My buddys rsx with a roots blower makes a whine that I want oh so bad for my T bird, thinking the saleen or roush 2v kit.
 

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AEDM8 said:
I personally belive the NOSsle setup would work best with the AED but I could just be biased. :zdevil:
NOSsle setup = drool.... :bowdown:

But expensive drool... :beek: :D
 

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AED Specialist
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1,277 Posts
FACTS:

Mike Siska ran 12.69 @ 107.70 mph with his '95 T-Bird and an AED kit. He did that with 308 RWHP and 390 RWTQ (SAE). STOCK NON-PI HEADS, STOCK NON-PI CAMS, and even the factory airbox.

Then he went with ported PI heads, stock PI cams, and still used the Eaton M90S to make 370 RWHP/432 RWRQ (SAE). So Blown96bird is incorrect. You can make more than 360 RWHP with an AED kit, it just becomes more and more difficult. Another good example is the LA County Sheriff's Mustang that Ford built. They used an AED kit (not an SVO blower that was on the shelf) and it made 378 RWHP (corrected) with an Eaton M90S.

Mike Siska also ran 11.88 @ 115 mph with the above combo. 11's with an Eaton M90S from the AED kit. Yes, the car has mods, but don't tell me the n/a guys running high 12's and low 13's don't have an equal penny in their cars. Please.

Mike Siska currently uses the new AED Race Blower with the Whipple in place of the Eaton M90S. It also has a new inlet adapter with a dual bore Mark VIII throttle body (a tad restrictive). The car recently made 495 RWHP/456 RWTQ on a Mustang Dyno and he went 11.01 @ 125 mph at the MN12 Nationals.

Again, done with AED under the hood.

You guys can talk smack all you want. I agree that for a strip car, a Vortech blower would yield a cheaper result and an easier install. However, let the facts be shown, the fastest car here runs an AED. It has gone 11's without nitrous and will go 10's as well.

So if you're going to debate the roots vs. centrifugal blower you better get some popcorn and a few beers. Be sure to include the entire positive displacement group, not just the little Eaton M90.

The bottom line is, to each their own. Some say an AED kit is fun to drive since it makes the car feel zippy around town. That is true, it makes tons of torque and down low where you can use it. Others say a Vortech is better for a daily driver. Then a few other people say a Vortech is better for strip use since you can make more power. Whatever...

We don't race dyno charts folks. The 1/4 mile speaks for itself.

A-Train
 
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