997tt Dfi engine is consumer grade - officially
07-16-2010, 10:18 AM
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997tt Dfi engine is consumer grade - officially
Well, not quite but watch the video where Preuninger calls the new GT2RS engine the "motorsport" engine !!!
This small slip of the tongue is the first time anyone from Porsche never mind the head of development for the GT cars has commented on the Mezger turbo engine in this way.
They have said the same for the GT3 but one could argue that that is fair since the GT3 could be described as "motorsport" (with its titanium rods and 8000+rev limiter) but the GT2RS engine is the same basic block and internals which has powered all road Porsche turbos from the begining. Now Porsche have built the consumer grade A91 Dfi turbo motor, what used to be the consumer motor is officially upgraded to "motorsport" spec !!!!
Porsche marketing and the bean counters won the battle.....
http://www.youtube.com/watch?v=32uy_...layer_embedded
FWIW my sources say the A91 turbo Dfi will not be around for very long and Porsche are working on a brand new 8 cylinder engine.
This small slip of the tongue is the first time anyone from Porsche never mind the head of development for the GT cars has commented on the Mezger turbo engine in this way.
They have said the same for the GT3 but one could argue that that is fair since the GT3 could be described as "motorsport" (with its titanium rods and 8000+rev limiter) but the GT2RS engine is the same basic block and internals which has powered all road Porsche turbos from the begining. Now Porsche have built the consumer grade A91 Dfi turbo motor, what used to be the consumer motor is officially upgraded to "motorsport" spec !!!!
Porsche marketing and the bean counters won the battle.....
http://www.youtube.com/watch?v=32uy_...layer_embedded
FWIW my sources say the A91 turbo Dfi will not be around for very long and Porsche are working on a brand new 8 cylinder engine.
07-16-2010, 11:36 AM
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Well, not quite but watch the video where Preuninger calls the new GT2RS engine the "motorsport" engine !!!
This small slip of the tongue is the first time anyone from Porsche never mind the head of development for the GT cars has commented on the Mezger turbo engine in this way.
They have said the same for the GT3 but one could argue that that is fair since the GT3 could be described as "motorsport" (with its titanium rods and 8000+rev limiter) but the GT2RS engine is the same basic block and internals which has powered all road Porsche turbos from the begining. Now Porsche have built the consumer grade A91 Dfi turbo motor, what used to be the consumer motor is officially upgraded to "motorsport" spec !!!!
Porsche marketing and the bean counters won the battle.....
FWIW my sources say the A91 turbo Dfi will not be around for very long and Porsche are working on a brand new 8 cylinder engine.
This small slip of the tongue is the first time anyone from Porsche never mind the head of development for the GT cars has commented on the Mezger turbo engine in this way.
They have said the same for the GT3 but one could argue that that is fair since the GT3 could be described as "motorsport" (with its titanium rods and 8000+rev limiter) but the GT2RS engine is the same basic block and internals which has powered all road Porsche turbos from the begining. Now Porsche have built the consumer grade A91 Dfi turbo motor, what used to be the consumer motor is officially upgraded to "motorsport" spec !!!!
Porsche marketing and the bean counters won the battle.....
FWIW my sources say the A91 turbo Dfi will not be around for very long and Porsche are working on a brand new 8 cylinder engine.
07-16-2010, 12:27 PM
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Nah....Porsche wouldn't lower themselves to working with a "tuner"
Do we believe him or is that instructions from marketing ? It is possible, the original 993tt and GT2s had different rods to the later cars, weight optimised....
Do we believe him or is that instructions from marketing ? It is possible, the original 993tt and GT2s had different rods to the later cars, weight optimised....
07-16-2010, 01:18 PM
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- bob
07-16-2010, 01:22 PM
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07-17-2010, 01:45 AM
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Yes...my GT2 is finally here!
I had a LWFW that Ruf installed when I upgraded my clutch with their 550 package. Unlike the 996TT, the timing on the 997TT allowed the lighter flywheel to idle without having to program the ECU to idle at a faster RPM. I had no stalling issues. In sport mode, the LWFW was completely silent if you left the AC off. Not sure if installing the same in the 997 GT2 should be a problem or not.
- bob
I had a LWFW that Ruf installed when I upgraded my clutch with their 550 package. Unlike the 996TT, the timing on the 997TT allowed the lighter flywheel to idle without having to program the ECU to idle at a faster RPM. I had no stalling issues. In sport mode, the LWFW was completely silent if you left the AC off. Not sure if installing the same in the 997 GT2 should be a problem or not.
- bob
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07-17-2010, 03:29 AM
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Thank you for saying that (interesting thread!). You're very right about that. Needs some mapping on accel, decel and all sorts of driveability. Tip in... throttle etc...
07-17-2010, 09:17 AM
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07-17-2010, 12:37 PM
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Alex, are you selling those 3.9 badges ?
07-17-2010, 12:45 PM
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I was going to have Carrillos fitted here in the UK and started making enquiries about fitting LWFW "while they are in there", I don't know the technical explanation as to why it should work with 997tt but not 7GT2 ? Maybe the GT2 application LWFW is lighter @ 12/13kg I believe, knocking 8kg off the dual mass. Anyway I was told it couldn't be done without the reprogramming as Alex said and few could do it properly.......
Alex, are you selling those 3.9 badges ?
Alex, are you selling those 3.9 badges ?
Now with regards to the Aasco it reacts quite differently as it's an analogue of the stock dual mass... The RS flywheels etc... do react/respond differently as well...
07-17-2010, 12:47 PM
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I just looked on Vivid's site, they say the Aasco 997tt LWFW weighs 6kg and saves almost 50% over stock which means it saves 6kg. The GT2RS Porsche LWFW saves 8kg - maybe the extra 2kg - 33% lighter is what messes up the stock programming ?
The 12/13kg I quote previously I think is with clutch etc....
The 12/13kg I quote previously I think is with clutch etc....
07-17-2010, 12:53 PM
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I was going to have Carrillos fitted here in the UK and started making enquiries about fitting LWFW "while they are in there", I don't know the technical explanation as to why it should work with 997tt but not 7GT2 ? Maybe the GT2 application LWFW is lighter @ 12/13kg I believe, knocking 8kg off the dual mass. Anyway I was told it couldn't be done without the reprogramming as Alex said and few could do it properly.......
Alex, are you selling those 3.9 badges ?
Alex, are you selling those 3.9 badges ?
Alex...thanks for the explanation. I miss the revs...
Anyways. It'll be a while before I start making changes. I believe I've spent more than enough money for a while - a 997 Turbo, then $$$ for a Ruf conversion, then $$$$$$ for Ruf carbon fiber body parts and suspension. And now a GT2.
I think I've become the one man economic stimulus package.
- bob
