Porsche 911 GT America – First New Car Built for 2014 United Sports Car Racing Series
08-12-2013, 03:03 PM
#16
RL Community Team
Rennlist Member
Rennlist Member
08-12-2013, 03:53 PM
#18
Rennlist Member
The new 9A1 racing engine is for street racing 911....they don't have it in GT street cars and we have not heard that it will go in a race car yet, if you know something no one else knows, feel free to share it....
08-12-2013, 06:00 PM
#19
RL Community Team
Rennlist Member
Rennlist Member
Others know about it. Next season all new 991 factory built race cars will use a 9A1 derived DFI engine. There was a report about it in Pano a month or so ago. A variation of the same racing motor will be used in the new GT3 and Turbo street cars. The Mezger will no longer be used for racing or street cars.
08-12-2013, 07:58 PM
#20
Racer
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It was a joke, of course the engine will have a restrictor.
08-12-2013, 09:05 PM
#21
Others know about it. Next season all new 991 factory built race cars will use a 9A1 derived DFI engine. There was a report about it in Pano a month or so ago. A variation of the same racing motor will be used in the new GT3 and Turbo street cars. The Mezger will no longer be used for racing or street cars.
08-12-2013, 11:07 PM
#22
We've all seen this video before but I wanted to bring up a few seconds from AP's EVO interview. Not a very firm answer but does "I guess so" sound convincing to you guys? Listen at 7:47 - 7:51
https://rennlist.com/forums/991-gt3/...3-answers.html
https://rennlist.com/forums/991-gt3/...3-answers.html
08-13-2013, 12:29 AM
#25
Race Director
I don't know what AP had in his mind but sometimes the translation between languages can get a little dicey. I know I have issues with that when I try conversational German. He said "I guess so" but he could easily have meant "I think so". Not definitive either way, but if he was being coy he might just have translated the wrong phrase in his head.
08-13-2013, 08:05 AM
#27
08-13-2013, 02:13 PM
#30
Serious question- I wonder exactly how much that's worth?
Every time the Mezger evolved most of the important bits were re-invented. Crank, cylinders, oil pump, etc all changed. And many of the most important bits (pistons, rods, cams, variocam) were never shared with the race cars. The main constant in the Mezger was the engine case, but that was the area the motor was arguably weakest, given that the bolted together design lacked the rigidity of a single-piece block and pistons.
A few years ago a guy I know re-engineered a Cayenne motor and won the Daytona 24 with it. Obviously the Cayenne motor could never have lasted the distance and can't be considered a race motor in any way. However he used little of the Cayenne motor itself other than the block. The pistons, rods, cams, intake, etc were all new and top quality race components. Using this strategy he took a new, untested motor that was designed for something else entirely and won perhaps the second hardest race in the world with it.
My point is that I don't think I put that much stock in the fact that the mezger is race proven, as nice as that is. Instead, I have faith in the guys that built it and the standard they built it to. The guy I know built the Mezger that won Daytona the year before he built the Cayenne motor. Clearly what he learned in the process allowed him to design a new motor that worked the first time. I guess my attitude is the same with the new GT3 motor. I had faith that the guys who built the 997.1 GT3 could build the RS 4.0 motor, despite the fact that many of the important parts were different. And I have faith that the same guys can take what they have learned and apply it to a new motor and be successful.
Two potential concerns do remain- lack of testing/ volume, and budget limitations. I generally have faith that the organization hasn't skimped in those areas too, but we'll see.
Every time the Mezger evolved most of the important bits were re-invented. Crank, cylinders, oil pump, etc all changed. And many of the most important bits (pistons, rods, cams, variocam) were never shared with the race cars. The main constant in the Mezger was the engine case, but that was the area the motor was arguably weakest, given that the bolted together design lacked the rigidity of a single-piece block and pistons.
A few years ago a guy I know re-engineered a Cayenne motor and won the Daytona 24 with it. Obviously the Cayenne motor could never have lasted the distance and can't be considered a race motor in any way. However he used little of the Cayenne motor itself other than the block. The pistons, rods, cams, intake, etc were all new and top quality race components. Using this strategy he took a new, untested motor that was designed for something else entirely and won perhaps the second hardest race in the world with it.
My point is that I don't think I put that much stock in the fact that the mezger is race proven, as nice as that is. Instead, I have faith in the guys that built it and the standard they built it to. The guy I know built the Mezger that won Daytona the year before he built the Cayenne motor. Clearly what he learned in the process allowed him to design a new motor that worked the first time. I guess my attitude is the same with the new GT3 motor. I had faith that the guys who built the 997.1 GT3 could build the RS 4.0 motor, despite the fact that many of the important parts were different. And I have faith that the same guys can take what they have learned and apply it to a new motor and be successful.
Two potential concerns do remain- lack of testing/ volume, and budget limitations. I generally have faith that the organization hasn't skimped in those areas too, but we'll see.