Crown

Board: Porsche - 911 - 996 Language: English Region: Worldwide Share/Save/Bookmark Close

Forum - Thread


    Transmission Changes?

    Is it possible to change gear ratios on the new GT3? If so, who do we contact at PCNA to effect transmission changes? My dealer tells me that my order has been accepted by the factory; however, I would like shorter gears as the "standard" gearing would be too tall for most, if not all, race tracks in North America.

    Re: Transmission Changes?

    Peter,

    I don't know of any way to do this as part of the order or build process. What you can do is have the 2003 GT3 Cup gears installed after you take delivery. I believe the stock Cup car gears are set up for a top speed of 145 mph or so and should be good for most tracks except the rovals like Daytona.

    The 03 Cup gears should be available through PMNA now.

    Karl

    Re: Transmission Changes?

    From the UK Porsche site:

    For competition use, all gear ratios from second to sixth can be easily replaced in order to prepare the car for individual circuit characteristics.

    Roy

    Re: Transmission Changes?

    Here are the top speeds in each gear using the latest gearing info from the Porsche Motorsports (assuming Cup car maximum RPM is the same as the GT3):

    2nd GT3: 46, 81, 112, 144, 170, 190 mph
    Cup car: 48, 75, 96, 114, 134, 161 mph

    On the open track, one possible problem with such a switch would be the increased risk of brake overheating.

    Re: Transmission Changes?

    If you use lower gears on the GT3, does this mean that the speedo and odometer will be wildly inaccurate (like on many cars) or is the speedo sensor located elsewhere (not on the tranny)?

    Would be nice not to rack up 10k miles on the odometer after 6k miles driven. The Porsche odometers already read 5% on the high side as it is...

    Speedo Gets Its Signal From....

    The speedo (instrument cluster computer) in the Carerras gets it's info from the ABS wheel speed sensors, so, changing gear ratios in the gearbox should not affect the readings.

    Re: Speedo Gets Its Signal From....

    Good News! Thanks, Craig!

     
    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
     
     
     
     
     
    627993 1306
    Porsche Sticky OFFICIAL: New Porsche 911 Turbo S (2020) 8/6/22 1:00 AM
    W8MM
    263908 1183
    Porsche Sticky SUN'S LAST RUN TO WILSON, WY - 991 C2S CAB LIFE, END OF AN ERA (Part II) 9/26/22 3:36 PM
    tommd
    158099 1166
    Porsche Sticky Welcome to Rennteam: Cars and Coffee... (photos) 9/14/22 9:50 AM
    Boxster Coupe GTS
    149621 417
    Porsche Sticky Porsche Taycan Turbo S - Short Review 8/10/22 8:51 PM
    WhoopsyM
    131197 538
    Porsche Sticky OFFICIAL: Cayman GT4 RS (2021) 1/15/22 10:41 PM
    watt
    67303 1
    Porsche Sticky OFFICIAL: Porsche 911 (992) GT3 RS - 2022 9/14/22 7:36 AM
    GnilM
    2571 18
    Porsche Cayman GT4 10/5/21 7:04 PM
    Topspeed
    562517 3587
    Porsche OFFICIAL: 911 GT2 RS (2017) 9/28/21 3:25 AM
    WhoopsyM
    468243 3507
    McLaren McLaren on a winning streak 2/1/22 10:14 PM
    SSO.
    465507 3954
    Porsche OFFICIAL: 991.2 GT3 RS (2018) 11/17/21 5:18 PM
    Rossi
    429373 3256
    Porsche OFFICIAL: 911 R (2016) 2/1/22 9:49 AM
    RCA
    420404 2655
    Porsche 992 GT3 9/26/22 10:16 PM
    Grant
    409675 3713
    Porsche OFFICIAL: The new Porsche 992 – a design icon and high-tech sports car 9/29/21 1:59 AM
    watt
    328536 1587
    Porsche Welcome to the new Taycan Forum! 7/30/22 11:46 AM
    Wonderbar
    176443 1446
    Porsche Donor vehicle for Singer Vehicle Design 2/10/22 9:08 PM
    Topspeed
    176259 772
    AMG AMG GT R 3/13/22 8:52 PM
    spudgun
    149242 834
    Lambo Aventador and SV 5/20/22 5:24 PM
    Topspeed
    144997 710
    Others Tesla 2 the new thread 9/20/22 3:52 PM
    Leawood911
    139105 1837
    Porsche GT4RS 9/26/22 2:03 PM
    Porker
    132712 1114
    Motor Sp. [2021] Formula 1 4/19/22 10:08 PM
    Leawood911
    112877 1590
    Others Bugatti Chiron 8/30/22 4:31 PM
    Josef
    108557 525
    Ferrari Ferrari 812 Superfast 6/12/22 5:09 PM
    watt
    106042 535
    BMW M BMW M2 Rumors 2/28/22 7:42 PM
    Topspeed
    94491 409
    Porsche Red Nipples 991.2 GT3 Touring on tour 9/25/22 5:17 PM
    blueflame
    89503 498
    Lambo Urus (SUV) 6/7/22 1:20 PM
    Topspeed
    88920 593
    Porsche Dave and Gnil @ Nürburgring Nordschleife 7/4/22 10:42 PM
    DaveGordon
    87396 722
    Others Corvette C8 7/18/22 12:40 PM
    WhoopsyM
    85439 443
    Motor Sp. [2022] Formula 1 9/25/22 11:15 AM
    Shaich
    70115 1362
    Lambo Huracán EVO STO 7/21/22 8:37 AM
    RCA
    58009 335
    194 items found, displaying 1 to 30.