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Old 02-26-2010, 04:06 PM   #25
Granatelli
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Drives: 2SS Victory Red
Join Date: Jul 2009
Location: Oxnard
Posts: 1,093
Quote:
Originally Posted by Brian@Vortech View Post
J.R., there was a lot of good information in your post, but as far as putting a centrifugal on a V6 being a bad idea...I've got over 1,000 350Z and G35 customers and quite a few 4.0L Mustang owners that would likely disagree with you.
Brian -

Please don't get me wrong - I am torn between multiple lovers here. You and the world know how I feel about the Novi-2000. I think the centrifugal certainly has its place in the market - hell I spent what seems like my entire life pushing and talking about centrifugals. When I sold Paxton - I kept the Novi blowers on all my cars and boat with the exception on my 1997 Tahoe which was my first attempt since the 1982 Camaro at Turbo charging. With a very wimpy Turbonetics 60-1 turbo. I made 10hp more then the Novi at 6psi and 112 ft/lbs more. At 10psi the Novi was making 38hp more then the baby turbo (2.5" inlet on turbo vs 4.00" inlet on Novi-2000) but the turbo still managed 104ft/lbs more. So as a truck owner towing a boat - The turbo was king. At the drag strip - you can image what happened.

As any drag racer on the planet if they would trade 38hp for 100 ft/lbs. - Anyone with any experience knows 100ft/lbs in barge like SUV trumps 40 hp every time.

Look at the turbo system on the orange car a few posts back, it packages as nice as any centrifugal kit I have seen so far for the Camaro. But knowing what I know and seeing what the dyno results are



8psi - 484hp / 421ft/lbs - Centrifugal
7psi - 560hp / 606ft/lbs - Turbo

Hard to argue with +76hp & +185ft/lbs of the turbo system

Personally since I never drive a car past 5k miles I would run the turbo if these were my only 2 choices. However if this was my true daily driver and only car - it would be hard to argue that the Vortech system is not the safer of the 2. I would love to be proven wrong but I think hanging a huge ass turbo in that location is definitely a MEGA heater and will take it toll on the surrounding areas - so for that reason I agree the Centrifugal is a great choice.

However - mounting twin smaller 68mm turbos down low like these:

http://www.gmsvideos.com/featured_la...php?reset=true

is a totally different story - There is no heat issues because the air running under the car more then makes up for it - Even a centrifugal or screw blower on top of the motor adds heat - No where near what the turbo does but still MORE HEAT.

Now to address the specifics of the 1000's of happy 350Z and G35 customers and quite a few 4.0L Mustang owners. Have they had a chance to compare to a turbo in the same application?

Listen to the Vortech You tube video and the GMS video back to back - you can hear how quick the turbo motor "ramps” the torque number down low on the centrifugal can't come close to the turbo.

I am not saying the centrifugal is a bad choice - I am saying a turbo on a v6 (that already is giving up bottom end) is a better choice when it comes to torque and torque moves the car - AND the centrifugal does not add noticeable torque down low where the v6 needs it
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