996 Turbo / GT2 Turbo discussion on previous model 2000-2005 Porsche 911 Twin Turbo and 911 GT2.

How much horsepower is required......

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Old Jan 24, 2007 | 11:32 PM
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How much horsepower is required......

.....to go over 200mph in a 996tt?

All this talk of CGTs driving around at 200mph has got me back on this subject. I'm not sure how crazy the rest of you are, got a pretty good idea though . But it is a dream of mine to drive at 200mph+ in my own car one day, it's not gonna last long I know, there are not many places around to do this speed for sustained periods and I know finding the right place and road conditions are as important as having your car setup to do it. But with my new 996tt coming I'm hoping I'm going to be in a situation to try it.
My guess would be between 500-550bhp, anyone tried or achieved this in a 996tt yet?
 
Old Jan 24, 2007 | 11:33 PM
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ruf 590 does 212??
 
Old Jan 24, 2007 | 11:39 PM
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A magazine I read shows a stock X50 hitting 189. I would guess at least 500HP? It takes a LOT power to go little bit faster at those speeds.
 
Old Jan 24, 2007 | 11:46 PM
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Originally Posted by robmd99
ruf 590 does 212??
http://video.google.com/videoplay?do...q=rturbo&hl=en
 
Old Jan 24, 2007 | 11:48 PM
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Well if a 450bhp X50 will give you 189mph and a RUF 590, assuming it's outputing 590bhp, will give you 212mph and the horsepower to mph increase is linear between the two (which I doubt it is) then you will need 517bhp to hit a true 200mph.

It's gonna be close
 

Last edited by Lounge Lizard; Jan 25, 2007 at 12:06 AM.
Old Jan 24, 2007 | 11:59 PM
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You need to ask MARKSKI or VRAlexander
 

Last edited by doccao; Jan 25, 2007 at 02:43 AM.
Old Jan 25, 2007 | 12:13 AM
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You can do some aerodynamic "mods" to help you get there. Tape up all body seams (especially on the front of the car), take off exterior side-view mirrors and windshield wipers. Ideally you want the ride height as low as possible without compromising the integrity of the suspension. All of these things will increase your top speed without adding hp...something to consider.
 
Old Jan 25, 2007 | 12:33 AM
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That video's awesome, made me want to go out and drive...hard
 
Old Jan 25, 2007 | 12:50 AM
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Yeah I would love to hit 200mph. After you figure out BHP tell me how many miles that takes
 
Old Jan 25, 2007 | 02:48 AM
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So.. you can drive over 200 MPH LEGAL every year in Nevada. If fact they have a club. Very easy to do the event. Something like $500 and drive 130 miles flat out... Sprinting to 140-160 is very different than holding 180+ for 130 miles. Beware, it's highly stressfull on boosted cars. Sustaining 20+PSI for a long time adds tremedous amounts of heat. I saw alot of broken/melted boosted cars.
http://www.openroadracing.com/html/200_mph_club.html

It's really fun though.. like Autobahn for the USA
 
Old Jan 25, 2007 | 03:50 AM
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Originally Posted by ZAMIRZ
You can do some aerodynamic "mods" to help you get there. Tape up all body seams (especially on the front of the car), take off exterior side-view mirrors and windshield wipers. Ideally you want the ride height as low as possible without compromising the integrity of the suspension. All of these things will increase your top speed without adding hp...something to consider.
I agree I think this is a must do, if you don't want to start taking bits off your car you should at least have your side mirrors folded in and wipers taped to the windshield.
Originally Posted by cpu77
Yeah I would love to hit 200mph. After you figure out BHP tell me how many miles that takes
Most people in the UK attempt this on airstrips and the normall magic distance is around 1 1/4 miles. I Think 2 miles on an open road with a rolling start will be plenty, but you also need plenty of distance after you reach 200mph to slow down again. So a 3-4 mile straight should be sufficient. Another important factor here is that you do not attempt this on your own, you'll need to recon your area for debris and inspect the road surface before your run and have another vehicle at the finish post as your spotter/safety car.
 
Old Jan 25, 2007 | 07:52 AM
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Depends if you want to go 200 mph based on your speedo display or REALLY go that fast. A change in gearing, rev limiter and/or MUCH bigger tires would be required even if you had the power to push it that fast.
 
Old Jan 25, 2007 | 09:34 AM
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My summation:

about 600 crank horsepower and a much higher redline than standard
(someone could do the math-stock redline = 189 mph).

MK
 
Old Jan 25, 2007 | 09:44 AM
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Increasing HP does not increase speed it only makes the car quicker. To go faster you have to either change gearing or raise the rev limiter. The Ruf is able to go that fast because they change gearing.
 
Old Jan 25, 2007 | 09:45 AM
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Originally Posted by WOODTSTER
My summation:

about 600 crank horsepower and a much higher redline than standard
(someone could do the math-stock redline = 189 mph).

MK
That would work out to 6,880RPM.
 


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