Crown

Board: Porsche - 911 - 997 - Turbo Language: English Region: Worldwide Share/Save/Bookmark Close

Forum - Thread


    997 tt 997 GT3 top speed

    Does it make any sense for the turbo to have the same top speed as the gt3 @ 193 shouldnt the turbo have a higher top speed like the last year 2005 996 GT2 which was stated on porsches website with a top track speed of 198mph, they both have the same power or is it because the turbo is much heavier? Porsches top speed has always been too conservative anyone here agree? Zo6 was claimed tested at 201mph in this sundays LA times, and truth to it..

    Re: 997 tt 997 GT3 top speed

    Top speed and weight are largely independent (just takes a heavier car longer to achieve its top speed). The only reason a TT might not have a higher top speed is that it may have more aerodynamic drag (part of that comes from having a wider body).

    Re: 997 tt 997 GT3 top speed

    CeD of .31 makes it excessively harder to reach 200mph than say .30 or .29

    Re: 997 tt 997 GT3 top speed

    And there may be a shorter gear ratio involved too.

    Re: 997 tt 997 GT3 top speed

    SO RC you ordered TIP correct?

    Re: 997 tt 997 GT3 top speed

    The other reason that a TT might not be faster is that more of its power is wasted as heat through the AWD system. It puts a smaller percentage of its power to the road at that speed.

    I think both cars will have a 6th gear that allows top speed to occur at or near peak power rpm (optimum for Vmax) - these ratios will be very different from each other (7,600rpm vs. ~6,000rpm), but I think each should be almost perfect for each car...

    Re: 997 tt 997 GT3 top speed

    Quote:
    Grant said:
    The other reason that a TT might not be faster is that more of its power is wasted as heat through the AWD system. It puts a smaller percentage of its power to the road at that speed.

    I think both cars will have a 6th gear that allows top speed to occur at or near peak power rpm (optimum for Vmax) - these ratios will be very different from each other (7,600rpm vs. ~6,000rpm), but I think each should be almost perfect for each car...



    I thought its AWD system could transfer 100% of power to the rear axle

    Re: 997 tt 997 GT3 top speed

    Quote:
    Crash said:
    Quote:
    Grant said:
    The other reason that a TT might not be faster is that more of its power is wasted as heat through the AWD system. It puts a smaller percentage of its power to the road at that speed.

    I think both cars will have a 6th gear that allows top speed to occur at or near peak power rpm (optimum for Vmax) - these ratios will be very different from each other (7,600rpm vs. ~6,000rpm), but I think each should be almost perfect for each car...



    I thought its AWD system could transfer 100% of power to the rear axle


    Maybe you're right. There would still be a bit more friction from turning the front axles and driveshaft though...

    Re: 997 tt 997 GT3 top speed

    Has to be a combination of all the above doesn't it: Higher drag (must be the key thing-GT3 has no holes for intercoolers, narrow(?) body exhausts in the centre, gurney flaps and so on), more driveline friction, gearing but perhaps it's also that vmax for a GT3 occurs where it it still delivering most of it's torque and power-it's a rev monster tuned for top end not for mid range. And cooling a TT must be a nightmare so all of that adds draaaaag. Oh and the GT3 is probably lower and that alone apparently is a valuable reduction in drag? It would be interesting to see the difference in acceleration at higher (autobahn) speeds.

     
    Edit

    Forum

    Board Subject Last post Rating Views Replies
    Porsche Sticky The moment I've been waiting for... 5/18/22 6:36 PM
    Pilot
     
     
     
     
     
    686496 1306
    Porsche Sticky OFFICIAL: New Porsche 911 Turbo S (2020) 10/9/22 4:08 PM
    watt
    320151 1186
    Porsche Sticky SUN'S LAST RUN TO WILSON, WY - 991 C2S CAB LIFE, END OF AN ERA (Part II) 12/1/22 4:38 PM
    Enmanuel
    217295 1258
    Porsche Sticky Welcome to Rennteam: Cars and Coffee... (photos) 11/29/22 4:25 PM
    Leawood911
    202873 436
    Porsche Sticky Porsche Taycan Turbo S - Short Review 10/6/22 12:37 AM
    WhoopsyM
    186150 580
    Porsche Sticky OFFICIAL: Cayman GT4 RS (2021) 11/22/22 8:19 PM
    GaussM
    129502 9
    Porsche Sticky OFFICIAL: Porsche 911 (992) GT3 RS - 2022 11/30/22 2:30 PM
    GnilM
    57362 68
    McLaren McLaren on a winning streak 2/1/22 10:14 PM
    SSO.
    521240 3954
    Porsche OFFICIAL: 911 R (2016) 2/1/22 9:49 AM
    RCA
    476723 2655
    Porsche 992 GT3 11/27/22 2:46 AM
    WhoopsyM
    472808 3785
    Porsche Donor vehicle for Singer Vehicle Design 9/30/22 6:31 PM
    Grant
    230252 774
    Porsche Welcome to the new Taycan Forum! 12/2/22 6:41 AM
    WhoopsyM
    228527 1447
    AMG AMG GT R 3/13/22 8:52 PM
    spudgun
    199929 834
    Lambo Aventador and SV 5/20/22 5:24 PM
    Topspeed
    196029 710
    Others Tesla 2 the new thread 10/27/22 2:59 PM
    Leawood911
    190615 1863
    Porsche GT4RS 11/24/22 3:09 AM
    GnilM
    190276 1193
    Motor Sp. [2021] Formula 1 4/19/22 10:08 PM
    Leawood911
    163497 1590
    Others Bugatti Chiron 8/30/22 4:31 PM
    Josef
    160657 525
    Ferrari Ferrari 812 Superfast 6/12/22 5:09 PM
    watt
    156836 535
    BMW M BMW M2 Rumors 2/28/22 7:42 PM
    Topspeed
    143428 409
    Porsche Red Nipples 991.2 GT3 Touring on tour 10/6/22 11:48 PM
    DJM48
    140308 501
    Lambo Urus (SUV) 6/7/22 1:20 PM
    Topspeed
    138437 593
    Others Corvette C8 7/18/22 12:40 PM
    WhoopsyM
    137679 443
    Porsche Dave and Gnil @ Nürburgring Nordschleife 7/4/22 10:42 PM
    DaveGordon
    136276 722
    Motor Sp. [2022] Formula 1 12/2/22 1:07 AM
    DJM48
    127179 1556
    Others Toyota Yaris GR 4/13/22 8:33 PM
    Grant
    107322 640
    Lambo Huracán EVO STO 7/21/22 8:37 AM
    RCA
    106355 335
    AMG Mercedes E63 S AMG (2018) - Short Review (updated on a regular basis) 10/24/22 7:42 AM
    RCA
    104063 402
    Ferrari Wandered to the dark side 8/29/22 9:35 AM
    BiTurbo
    79122 418
    Ferrari Ferrari Roma 4/18/22 4:33 PM
    watt
    31547 438
    178 items found, displaying 1 to 30.