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

Monza again ...this time it's a LP570 Superleggera !

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Old Mar 7, 2011 | 05:13 PM
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Go to a good modellshop where they sell modellplanes or stuff like this! They will have it. Most of them sell their own modell Fuel mixture. And the base of this mixture beside nitro is just 99,8% meth. And its cheap!
 
Old Mar 8, 2011 | 10:36 AM
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Great video! Looks like you were having a blast and great steady driving. Good luck with your final tweaks...
 
Old Mar 8, 2011 | 11:17 AM
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wow that 570 is fast! but you did a great job keeping up with it. Excellent driving.
 
Old Mar 8, 2011 | 04:34 PM
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Nice job riding that lambo.
 
Old Mar 8, 2011 | 05:48 PM
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Man, that lp570 sounds incredible. No doubt you are well over 600 bhp, considering it has 300-400 lbs less than you in weight and uses a more efficient trans for accelerating. your power level is easily in the 650 bhp range. Also, you did very well against a much lighter car. He opened up a gap when you got bogged down by a slower car and you promptly caught him on the straight.
 
Old Mar 8, 2011 | 08:43 PM
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Just wondering if you are all wheel drive or have you converted to RWD?? Nice video
Robert
 
Old Mar 8, 2011 | 09:46 PM
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Great vids as always Pun!

Nice easy smooth driving.
 
Old Mar 9, 2011 | 01:44 AM
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Originally Posted by robmd99
Just wondering if you are all wheel drive or have you converted to RWD?? Nice video
Robert
Robert, i'm still all wheel drive ... but i would be very curious to test it on rwd !
Just need an LSD before !
 
Old Mar 9, 2011 | 02:58 AM
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Just to give some correct data, the 570 superleggera is not lighter than the 996 at all. A normal equipped 570 is about 1590kg (on the gauge), so perhaps with removed seat 1570... a 996 gt2 like i have (normal config with sport seats) is 1510kg, so for sure not heavier than the 570.
Both cars have been weighted here in house with our intercomp equipment.
About power... consider that Porsche to get 620 HP on the new GT2 RS (997) needs 1.6 bar boost on high rev's... (tested too)

@the punisher: you are really a good driver, i'm impressed.
 
Old Mar 9, 2011 | 03:22 AM
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Boldis, interesting datas ... my statement about the 570 weight was based on the factory information that Lamborghini released but, effectively their datas could be wrong !
Just to make an example, Ferrari says that the 458 weights 1320kg but it has been weighted at 1528 kg with full tank !
My 996 turbo is 1500 kg with half tank.
And, about the GT2 RS, it's true that to get 620HP it needs 1.6 bar boost but it has to be considered that it has a completely different intake system ... more compression to have the possibility to expand and cool down the air before the manifold !
1.6 bar in a 997 GTRS can not be compared to 1.6 in a 996 GT2/turbo !
 
Old Mar 9, 2011 | 06:20 AM
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I really don't know how some manufacturers claim some weight... expecially some italian... anyhow Lambo's and Ferrari's never reach the claimed values.. perhaps they measure without fuel, oil, water, paint, tires...
Porsche is very close to the reality, if they claim 1500 than it's 1500..

Regarding power... well, i drive a 996 gt2 with 1.2 bar boost and recently i've driven a 997 gt2 rs... the power difference (and not only this) is huge. On a cold day the wheels start to spin in 4th gear on the highway when you reach 5800 rpm's (means the boost starts to climb to 1.5 bar). I think you can very well compare the two engines (cause the engines are practically the same) and i think you need similar values to get similar power.. the different intake manifold and turbochargers just help the 997 to be more efficient (with less boost you get the same power or same boost more power), not the opposite.
My idea..
 
Old Mar 9, 2011 | 07:04 AM
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Originally Posted by boldis_63
I think you can very well compare the two engines (cause the engines are practically the same) and i think you need similar values to get similar power.. the different intake manifold and turbochargers just help the 997 to be more efficient (with less boost you get the same power or same boost more power), not the opposite.
My idea..
Yes, you can compare the 2 engines but you can't compare the 2 different concept of intake manifolds !
The intake of all the 997 Turbo/S/GT2/GT2RS is called "expansion intake manifold" a new concept never used before on a street legal Porsche.
1.6 bar of the new GT2RS is more similar to a 1.3-1.35 bar of an "old" 996 Turbo/GT2 !
Give a look at the Porche website and you'll find how it works !
I have raced against a 997 GT2RS in a straight line and i haven't seen such a big difference !
I know just one thing, a 996 Turbo/GT2 with a boost pressure of 1.6 bar will be incredibly faster than a 997 GT2RS ... we are talking about much more than 700 crank HP !
 
Old Mar 9, 2011 | 08:50 AM
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Well, we can discuss about this for the sake of argument, but the fact of the matter is that a 18g car with injectors and intercoolers easily puts down 500+ wheel hrse power on a Mustang dyno (not exactly the highest reading dyno of them all...) if I can remember right (for example TTBoost's car puts down 600 to the wheels with methanol injection, which sould be good for about 60-80whp). 500WHP is roughly 600 crank hp.

If you want to compare apples to apples you have to measure pressure at the end of the intake manifold runners....not just after the throttle body...
A different design in the intake manifold can change pressure values a lot...

AND, boost doesn't tell all the story...
 
Old Mar 9, 2011 | 10:27 PM
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I love your videos! Always keeping it so smooth and relaxed.
 
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