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992 GT3 to be turbo

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Old 09-04-2018, 10:48 PM
  #46  
Waxer
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No one here sees the 991 GT2RS as a test balloon for TT GT cars? Lol.

We (most of us) took the TT bait hook line and sinker.
Old 09-04-2018, 11:45 PM
  #47  
GrantG
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Originally Posted by Bardman


Consistent with the gap between GT3 and RS in previous gens...
Really? Don’t think its ever been 20hp for GT3 RS before. It’s been 0, 0, 15, 25, and now 20 (not including 997 RS 4.0 which was 65).

The only other time I remember 20hp from RS was 1973 (210hp vs 190hp in 911S which was 11% and lots more torque compared to current 4%).
Old 09-05-2018, 12:09 AM
  #48  
Bardman
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Originally Posted by GrantG

Really? Don’t think its ever been 20hp for GT3 RS before. It’s been 0, 0, 15, 25, and now 20 (not including 997 RS 4.0 which was 65).

The only other time I remember 20hp from RS was 1973 (210hp vs 190hp in 911S which was 11% and lots more torque compared to current 4%).
Sorry was just countering any suggestion that because the RS ‘only’ had a bump of 20hp that the NA motor had no more to give.

I think the 992 will be turbo, but not because the 4.0 NA has no more to give.
Old 09-07-2018, 10:02 AM
  #49  
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As shocking as it sounds, the latter is rumored to ditch its naturally aspirated flat-six engine in favor of a more technologically advanced turbo unit. According to a Stuttgart-based source, quoted by Autocar, the 2020 911 GT3 and the more track-oriented 911 GT3 RS will adopt a heavily modified version of today's 3.8-liter twin-turbo boxer engine of the company.

According to the British magazine's intel with direct links to Porsche Motorsport, the new GT3 will have somewhere in the region of 513 horsepower (382 kilowatts), making it equally powerful to today's 911 GT3 RS. That would represent a healthy boost over the 493 hp (368 kW) of the current 911 GT3 and, most importantly, the torque will be significantly increased to approximately 524 pound-feet (710 Newton-meters).

https://www.google.com/amp/s/www.mot...gt3-turbo/amp/
Old 09-07-2018, 10:32 AM
  #50  
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When will the 992 CUP car be presented? That's when we know for sure!
Old 09-07-2018, 11:15 AM
  #51  
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“According to the British magazine's intel with direct links to Porsche Motorsport, the new GT3 will have somewhere in the region of 513 horsepower (382 kilowatts), making it equally powerful to today's 911 GT3 RS ... the torque will be significantly increased to approximately 524 pound-feet (710 Newton-meters).”

This implies a very weird power curve. Torque about same as GT2 RS, but 180hp less. It means lots of boost in low revs, but falling terribly as motor begins to rev.

I hope this isn’t true or it will feel like a diesel truck
Old 09-07-2018, 12:44 PM
  #52  
rosenbergendo
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Originally Posted by GrantG
“According to the British magazine's intel with direct links to Porsche Motorsport, the new GT3 will have somewhere in the region of 513 horsepower (382 kilowatts), making it equally powerful to today's 911 GT3 RS ... the torque will be significantly increased to approximately 524 pound-feet (710 Newton-meters).”

This implies a very weird power curve. Torque about same as GT2 RS, but 180hp less. It means lots of boost in low revs, but falling terribly as motor begins to rev.

I hope this isn’t true or it will feel like a diesel truck
But with an ECU tune you are at 2RS power AND torque. With turbos it'll be free mod city!!
Old 09-07-2018, 01:07 PM
  #53  
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Originally Posted by rosenbergendo
But with an ECU tune you are at 2RS power AND torque. With turbos it'll be free mod city!!
Not if the turbochargers are sized appropriately for the specs above. They would start to run out of breathing capacity from 4,000 rpm...

I think there is a factual error in the information (like maybe 524 Nm instead of Foot-Pounds - Which is 386 Foot-Pounds). Current GT3 makes 460 Nm (339 Ft-Lbs)...
Old 09-07-2018, 02:01 PM
  #54  
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There is all sorts of boost trickery to manipulate curves also - think variable vanes, remapping, or electrically spooled and you have a lot of possibilities.
Whether it has lag will be what to look for...
Originally Posted by GrantG
“According to the British magazine's intel with direct links to Porsche Motorsport, the new GT3 will have somewhere in the region of 513 horsepower (382 kilowatts), making it equally powerful to today's 911 GT3 RS ... the torque will be significantly increased to approximately 524 pound-feet (710 Newton-meters).”

This implies a very weird power curve. Torque about same as GT2 RS, but 180hp less. It means lots of boost in low revs, but falling terribly as motor begins to rev.

I hope this isn’t true or it will feel like a diesel truck
Old 09-07-2018, 02:23 PM
  #55  
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Originally Posted by Perimeter
There is all sorts of boost trickery to manipulate curves also - think variable vanes, remapping, or electrically spooled and you have a lot of possibilities.
Whether it has lag will be what to look for...
Yes, I understand that. But if the original specs are correct the manipulation of the torque curve would be massive and very harmful to the enjoyment of the car. I don't believe Porsche would design a GT3 replacement that had enormous low end torque that totally runs out of breath at middle and high revs (this is necessary to produce a car with huge torque but only modest power - since power is a mathematical formula of torque at rpm). Torque curve would have to fall off a cliff as rpm's rise to produce the predicted result. I don't believe Porsche would want anything close to this kind of character (quite the opposite). I would expect Porsche might artificially limit low-rpm boost in order to produce an exciting top end, more familiar to its NA motor fans.

A car with much more peak foot-pounds of torque than peak horsepower means it would drive like a truck motor or 60's American muscle car. We know Porsche does not want its GT car to drive this way. Even the GT2 RS is not close to this (power much higher than torque in ft-lbs). This allows the 2RS to make peak power near 7k rpm, not below 5k rpm like the specs leaked suggest. I have very high confidence that these are wrong.

Update- if Hp and Tq in Ft/Lbs were the same, peak Hp would come very low on the tach and there’d be no sense in a redline higher than 6,xxx rpm (with peak power made well below this point). The numbers in the prediction above show torque even higher relative to horsepower, pushing peak power even lower on the tach. Means torque curve would be falling rapidly well below 5,000 rpm (due to loss of boost or undersized turbochargers)

See here:

Last edited by GrantG; 09-07-2018 at 05:03 PM.
Old 09-08-2018, 10:54 AM
  #56  
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Electrically assisted Hybrid for the top end win?
Old 09-09-2018, 07:09 PM
  #57  
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Originally Posted by Perimeter
Electrically assisted Hybrid for the top end win?
Yes, electric assistance could add much more torque than Hp (from zero rpm)
Old 09-14-2018, 11:24 AM
  #58  
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http://www.evo.co.uk/porsche/911-gt3...he-n-rburgring

The new GT3 testing at the ring.

Old 09-14-2018, 11:56 AM
  #59  
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Originally Posted by JonA85
Shouldn't this picture be on the "next GT3 is going to be naturally aspirated" thread?

EVO says: "There are also two central-exit exhaust pipes sticking out of the rear bumper - a GT3 trademark since the 997 edition was revealed in 2006. Although the exhausts are no guarantee of exactly what engine will be found in the back of the next GT3, we are fairly confident the naturally aspirated 4-litre flat-six that powers the current GT3 and GT3 RS, or a slightly fettled version of it, will be used again."

9500 rpm, 525hp, no cleaning lady.. just my best SWAG.
Old 09-14-2018, 12:44 PM
  #60  
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How insane would it be if Porsche actually comes out with a flat 6 4 liter motor with 550 hp and revs to 10K rpm!


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