GT3/GT2 Performance and Track Discussion on the Porsche GT3 and GT2

Car and Driver 997tt report!

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Old Jan 25, 2006 | 05:16 PM
  #31  
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Originally Posted by roadsterdoc
Extended periods of high boost will create a lot of heat resulting in detonation and thus engine damage. Looks like they figured out how to give short bursts of high boost safely. This IS a big deal. Free extra power, although brief, is still extra power. And really, 10 seconds isn't brief if you are standing on the throttle.
Then make it work with the added boost permanently instead of teasing for 10 seconds. Either do it right or don't do it all. So what will happen when aftermarket chips come out raising boost?
 
Old Jan 25, 2006 | 05:17 PM
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I think that the hp number is not what is important here. Lets wait to see how the power curve comes into play. Having 550hp at a high RPM but being poor down low might not make the car move like a car that has 480hp but a perfect power curve.
 
Old Jan 25, 2006 | 05:27 PM
  #33  
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I think it is an interesting insight into the thermal dynamics of the 997tt engine. Porsche engineers are very careful to measure the tempurature of everything during product development, yet chose to limit the high boost operation for 10 seconds. Obviously, something is getting HOT here, otherwise it would have been longer, or continuous. Unless its due to the variable turbos (I have heard the problem is high EGT's with them), there is something that cannot take continuous high boost operation due to heat............. I wonder if the same limitation applies to 996tt motors, with tuners never running long enough during 1/4, etc to overheat, but actually running a motor that cannot take high boost for long.............

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Old Jan 25, 2006 | 06:34 PM
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Originally Posted by Ruiner
My '01 is 3395lbs, so it isn't "less", much less 90lbs less, than the early gen 996TTs.
Yea seriously, are they comparing to a damm cabrio?!? LOL!
 
Old Jan 25, 2006 | 07:46 PM
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Old Jan 25, 2006 | 08:08 PM
  #36  
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Originally Posted by iLLM3
Yea seriously, are they comparing to a damm cabrio?!? LOL!
I think that the '04-'05 Coupes were in the low 3500lb range... I think.
 
Old Jan 25, 2006 | 10:34 PM
  #37  
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Originally Posted by roadsterdoc
Spoken like someone whom knows only normal aspiration.
Normal Aspiration is my foretay. I could careless about bar or psi. I'd rather care about a.) liner power b.) nice dyno curve c.) CFM, not PSI d.) horsepower. Rave all you want about "bar", it doesn't tell you **** and you look pathetic making asumptions based on bar at this time.
 
Old Jan 25, 2006 | 10:58 PM
  #38  
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Originally Posted by Ruiner
I think that the '04-'05 Coupes were in the low 3500lb range... I think.
That's what Porsche published.

The 997 Turbo will definitely weigh less than that...no spare tire alone reduces the weight ~30 lbs.
 
Old Jan 25, 2006 | 10:59 PM
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I belive my 2003 Evo 8 did the same as far as boost department in stock form, it would boost to 19psi at low RPM and would tapper off to 16psi at high RPM.
 
Old Jan 26, 2006 | 06:01 AM
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Originally Posted by Life Dies
Normal Aspiration is my foretay. I could careless about bar or psi. I'd rather care about a.) liner power b.) nice dyno curve c.) CFM, not PSI d.) horsepower. Rave all you want about "bar", it doesn't tell you **** and you look pathetic making asumptions based on bar at this time.
Well spelling sure doesn't appear to be your "foretay." And from your post, neither is comprehending the written word. If you are so adamant about NA, don't post your noise in the turbocharged subforum. You have had good contributions elsewhere, but you are acting like a Troll.

Respectfully,
Doc
 
Old Jan 26, 2006 | 07:36 AM
  #41  
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Originally Posted by trev0006
I belive my 2003 Evo 8 did the same as far as boost department in stock form, it would boost to 19psi at low RPM and would tapper off to 16psi at high RPM.
That was a little bit different. The EVO's 16G turbo couldn't hold high boost at redline (higher rpms) because of the flow rate, not because of an ECU-controlled protection system.
 
Old Jan 26, 2006 | 07:44 AM
  #42  
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Originally Posted by Life Dies
Normal Aspiration is my foretay. I could careless about bar or psi. I'd rather care about a.) liner power b.) nice dyno curve c.) CFM, not PSI d.) horsepower. Rave all you want about "bar", it doesn't tell you **** and you look pathetic making asumptions based on bar at this time.
So, you could care less?

click on the thumbnail
 
Old Jan 26, 2006 | 08:12 AM
  #43  
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Originally Posted by roadsterdoc
Well spelling sure doesn't appear to be your "foretay." And from your post, neither is comprehending the written word. If you are so adamant about NA, don't post your noise in the turbocharged subforum. You have had good contributions elsewhere, but you are acting like a Troll.

Respectfully,
Doc

Ah, yes, the always classical turn the table response because I can't support a counter argument so I will scrutinize spelling.
 
Old Jan 26, 2006 | 08:14 AM
  #44  
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Originally Posted by Dock (Atlanta)
That's what Porsche published.

The 997 Turbo will definitely weigh less than that...no spare tire alone reduces the weight ~30 lbs.
I can think of a few things, Dock, that would help us '01-'02 owners:
- remove spare/jack/hardware
- remove rear wiper
- remove rear seats/seat belts
- replace power seats with GT3 seats or equally light track seats

Those changes, alone, would account for a good bit of weight.
 
Old Jan 26, 2006 | 09:07 AM
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That would be some few horsepower figures over the 996TT which is never bad.
What i do not like IMO is that the placing of the foglights are very much lessening the sportscars front look. There should have made it a bit more muscular looking than what we have been seeing lately. Lets hope they get it better when it is ready for production.
 


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