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    Re: OFFICIAL: 911 GT2 RS (2017)

    First review.

    https://www.youtube.com/watch?v=pdG6w0s5Qoo

     


    Re: OFFICIAL: 911 GT2 RS (2017)

    Finally got my answer: 

    “We are at a disadvantage compared with some competitors because our engine is right at the rear of the car,” Preuninger says. “We have to bring air back there in enough quantity to make 700 hp, and you need a lot of oxygen for that.”

    To help, the scoops on the engine cover lead to a new airbox with five tubular filter elements that offer the maximum surface area for the size of package and deliver 15 to 20 percent more airflow. The intercoolers are 15 percent bigger and sit lower in the car, and a system that sprays water on the intercooler matrix when intake air temperatures exceed 122 degrees F, with 90 percent throttle openings, can reduce intake air temperature by as much as 68 degrees.

    Preuninger says early in the GT2 RS’ development, the powertrain engineers figured the system would be worth looking at if it showed a reduction of 40 degrees, and they were stunned when testing showed reductions of up to 60 degrees. “It’s a real example of how you can’t calculate everything,” he says. “You have to try stuff out.”

    The water spray system is fed by a 1.3-gallon tank, and because of its extreme operating parameters, Preuninger says it won’t often need refilling. If it does run dry, the engine management system simply dials back the available power. Refilling the tank, which is mounted in the trunk and easily accessible, is as easy as buying a bottle of distilled water

     


    Re: OFFICIAL: 911 GT2 RS (2017)

    Very interesting!


    --

    ⇒ Carlos - Porsche 991 Carrera GTS


    Re: OFFICIAL: 911 GT2 RS (2017)

    122F is 50 C, on a 30C day it will be easy to go over 50C IAT..... Interesting info tho', thanks for sharing


    --

     

     

    997 GT2 2014 3.9 Mezger, 800PS @ 1.2 bar

    993 Turbo, 2006 built 3.8, 577PS/797NM, 1440kg DIN


    Re: OFFICIAL: 911 GT2 RS (2017)

    Topspeed:

    First review.

    https://www.youtube.com/watch?v=pdG6w0s5Qoo

     

    Video not available


    --


    Re: OFFICIAL: 911 GT2 RS (2017)

    https://www.youtube.com/watch?v=8kkR1CUc-io


    Re: OFFICIAL: 911 GT2 RS (2017)

    kingjr9000:

    Finally got my answer: 

    “We are at a disadvantage compared with some competitors because our engine is right at the rear of the car,” Preuninger says. “We have to bring air back there in enough quantity to make 700 hp, and you need a lot of oxygen for that.”

    To help, the scoops on the engine cover lead to a new airbox with five tubular filter elements that offer the maximum surface area for the size of package and deliver 15 to 20 percent more airflow. The intercoolers are 15 percent bigger and sit lower in the car, and a system that sprays water on the intercooler matrix when intake air temperatures exceed 122 degrees F, with 90 percent throttle openings, can reduce intake air temperature by as much as 68 degrees.

    Preuninger says early in the GT2 RS’ development, the powertrain engineers figured the system would be worth looking at if it showed a reduction of 40 degrees, and they were stunned when testing showed reductions of up to 60 degrees. “It’s a real example of how you can’t calculate everything,” he says. “You have to try stuff out.”

    The water spray system is fed by a 1.3-gallon tank, and because of its extreme operating parameters, Preuninger says it won’t often need refilling. If it does run dry, the engine management system simply dials back the available power. Refilling the tank, which is mounted in the trunk and easily accessible, is as easy as buying a bottle of distilled water

     

    Plus


    Re: OFFICIAL: 911 GT2 RS (2017)

    BiTurbo:

    https://www.youtube.com/watch?v=8kkR1CUc-io

    The guy in this vid seems to calculate that the car will weigh 1440kg in Weissach trim but I think that is wrong.

    Porsche said 1470kg is the DIN weight for an unoptioned car so add in cage and PCM and what not must get you up to ~1500kg and the Weissach pack saves 30kg on this weight since one of the big savings is the Ti cage vs the clubsport cage - do I have this correct ?


    --

     

     

    997 GT2 2014 3.9 Mezger, 800PS @ 1.2 bar

    993 Turbo, 2006 built 3.8, 577PS/797NM, 1440kg DIN


    Re: OFFICIAL: 911 GT2 RS (2017)

    Distilled water? Seriously?


    Re: OFFICIAL: 911 GT2 RS (2017)

    Chalk - makes perfect sense


    Re: OFFICIAL: 911 GT2 RS (2017)

    There is an unstated rule thumb for car manufacturers when introducing a new model to the public. They present it in the color they believe puts it in its most attractive light. What color did Porsche use for its introduction model? Go with that.

    Don’t go with Black. That is the color they use to hide the lines of test models.


    --

     

    "A man wrapped up in himself makes for a very small bundle."

     


    Re: OFFICIAL: 911 GT2 RS (2017)

    nberry:

    There is an unstated rule thumb for car manufacturers when introducing a new model to the public. They present it in the color they believe puts it in its most attractive light. What color did Porsche use for its introduction model? Go with that.

    Don’t go with Black. That is the color they use to hide the lines of test models.

     

    Yet in many cases they're wrong...

    Most just present in a color that makes sense. Ferrari are red, Porsche are silver, McLaren are orange. These are more or less company colors. Sometimes they introduce a car in a new color simply to show of a new color. 


    Re: OFFICIAL: 911 GT2 RS (2017)

    Go with PTS, especially for a car such as the GT2 RS. Make it one of its kind.


    Re: OFFICIAL: 911 GT2 RS (2017)

    TB993tt:
    BiTurbo:

    https://www.youtube.com/watch?v=8kkR1CUc-io

    The guy in this vid seems to calculate that the car will weigh 1440kg in Weissach trim but I think that is wrong.

    Porsche said 1470kg is the DIN weight for an unoptioned car so add in cage and PCM and what not must get you up to ~1500kg and the Weissach pack saves 30kg on this weight since one of the big savings is the Ti cage vs the clubsport cage - do I have this correct ?

    Sounds right according to the official spec

    991.2 GT3

     


    Re: OFFICIAL: 911 GT2 RS (2017)

    We need to do some dyno testing to see which water produces the most horsepower!


    Re: OFFICIAL: 911 GT2 RS (2017)

    Unlike BMW where the water is injected into the intake of the engine, I would think the quality of the water is far less important here (just sprays onto the outside of the IC).  Maybe regular water with some small amount of additive to reduce calcium deposits would be fine...


    --

     

     

    18 GT3 Manual, 73 Carrera RS 2.7 Carbon Fiber replica (1,890 lbs), 06 EVO9 with track mods. Former: 16 Cayman GT4, 73 911S, Two 951S's, 996 C2, 993 C2, 98 Ferrari 550, 79 635CSi

     


    Re: OFFICIAL: 911 GT2 RS (2017)

    The  car on video is GT Silver not Chalk.

    My car will be wrapped with Xpel anyway and i'm thinking to go with a matt Xpel on top of GT Silver. 

     


    Re: OFFICIAL: 911 GT2 RS (2017)

    Grant:

    Unlike BMW where the water is injected into the intake of the engine, I would think the quality of the water is far less important here (just sprays onto the outside of the IC).  Maybe regular water with some small amount of additive to reduce calcium deposits would be fine...


    -18 GT3 Manual, 73 Carrera RS 2.7 Carbon Fiber replica (1,890 lbs), 06 EVO9 with track mods. Former: 16 Cayman GT4, 73 911S, Two 951S's, 996 C2, 993 C2, 98 Ferrari 550, 79 635CSi

     

     

    Grant, I was making a joke Smiley



    Re: OFFICIAL: 911 GT2 RS (2017)

    Interesting sound, like the old turbocharged race cars


    --

    2016 Cayman GT4 - 1992 964 Carrera 2 - 2016 Macan S Diesel - 2013 Mini Cooper S


    Re: OFFICIAL: 911 GT2 RS (2017)

    Love the sound!


    --

    Tesla Model S P100D & Model X P90D & 2016 BMW i8 & 2017 Sept 991.2 GT3 ordered. 2020 Porsche Mission E on order


    Re: OFFICIAL: 911 GT2 RS (2017)

    964C2:

    Grant, I was making a joke Smiley

    This is RT. Serious people. Never make a joke without a smiley. 

    SmileySmiley


    --

    2017 991.2 Carrera 4 GTS | GT Silver Metallic - The GT3 Killah!
    2013 Audi S3 | Glacier White


    Re: OFFICIAL: 911 GT2 RS (2017)

    bluelines:
    964C2:

    Grant, I was making a joke Smiley

    This is RT. Serious people. Never make a joke without a smiley. 

    SmileySmiley

    Hahaha, especially when referring to a ""Hairy Chest"" Smiley Smiley..

    You guys are a disgrace. I have not posted for ages and all you lot have done is talk about Porsche's and exterior colour choices. Come on guys, lighten up. Smiley Smiley Smiley Smiley..


    --

    throt

    "I Have Done It!".

    991 GT3 pick up in October 2014.

    Rennteam Hairy Chest Advisor.


    Re: OFFICIAL: 911 GT2 RS (2017)

    https://www.autoblog.com/2017/11/06/2018-porsche-911-gt2-rs-first-drive-review/#slide-7145758

    2500 units...

    "Interestingly, its 211 mph top speed was electronically limited due to the tires. Porsche engineers say the fully uncorked drivetrain could hit 220 mph."

    Wooo...


    Re: OFFICIAL: 911 GT2 RS (2017)

    M4n0t0:

    https://www.autoblog.com/2017/11/06/2018-porsche-911-gt2-rs-first-drive-review/#slide-7145758

    2500 units...

    "Interestingly, its 211 mph top speed was electronically limited due to the tires. Porsche engineers say the fully uncorked drivetrain could hit 220 mph."

    Wooo...

    Some real BS in that review, I mean really SmileySmiley

    Preuninger went old school to create that elusive difference: he dug into the Porsche museum collection and put a 1970s-era 935 Turbo and several turbocharged racecars on a lift, measuring things like intake runner lengths and the header diameters. The findings helped shape the GT2 RS's inimitable howl.


    --

     

     

    997 GT2 2014 3.9 Mezger, 800PS @ 1.2 bar

    993 Turbo, 2006 built 3.8, 577PS/797NM, 1440kg DIN


    Re: OFFICIAL: 911 GT2 RS (2017)

    TB993tt:

    Preuninger went old school to create that elusive difference: he dug into the Porsche museum collection and put a 1970s-era 935 Turbo and several turbocharged racecars on a lift, measuring things like intake runner lengths and the header diameters. The findings helped shape the GT2 RS's inimitable howl.

    Smiley


    --

    2017 991.2 Carrera 4 GTS | GT Silver Metallic - The GT3 Killah!
    2013 Audi S3 | Glacier White


    Re: OFFICIAL: 911 GT2 RS (2017)

    What kind of racecars was he examining that comes with these 


    Re: OFFICIAL: 911 GT2 RS (2017)

    Cup car.


    Re: OFFICIAL: 911 GT2 RS (2017)

    noone1:

    Cup car.

    Ouch!

    Smiley

     


    Re: OFFICIAL: 911 GT2 RS (2017)

    noone1:

    Cup car.

    Smiley 


    --


     
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