1. Welcome to Jeeps.net!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Jeep discussion topics
    • Transfer over your build thread from a different forum to this one
    • Communicate privately with other Jeep owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Speedometer Gear??

Discussion in 'Wrangler TJ (1996-2006)' started by kyletraci, Dec 7, 2017.

  1. Dec 7, 2017 at 7:58 AM
    #1
    kyletraci

    #1
    kyletraci [OP] New Member

    Joined:
    Dec 7, 2017
    Member:
    #2030
    Messages:
    4
    Gender:
    Male
    First Name:
    Kyle
    Vehicle:
    2001 Wrangler Sport
    On my 2001 Jeep Wrangler, the speedometer is off. I looked up the tire size and matched it up with the stock rear gears and came up with a 30 tire and 307 rear gear. I ordered a 27 tooth speedo gear and according to my GPS I am doing roughly 8 miles an hour faster than the speedometer indicates. Do I go with a larger or smaller gear for the speedometer. Thanks!
     
    kyletraci, Dec 7, 2017
    #1
  2. Dec 7, 2017 at 10:22 AM
    #2
    OFFGRID

    #2
    OFFGRID Well-Known Member

    Joined:
    Oct 3, 2016
    Member:
    #317
    Messages:
    2,018
    Gender:
    Male
    First Name:
    Peter
    Houston
    Vehicle:
    1979 Jeep CJ7, 258, TH350, NP208
    Howell fuel injection, header, HEI distributor, TH350, NP208, SOA lift with YJ springs in the front & GW springs in the Rear. AMC20 with G2 1 piece chromos trussed, Dana 30 with G2 chromos and 760x ujoints and MM Stainless Hubs, Geared 4.56. Tom Woods shafts, Metal cloaks, Caged, 37" Toyo MTs.
    I order a programmer to correct it electronically in the computer. As for you question, I believe if you are reading too fast you need to slow it down so more teeth/larger equals fewer rotations and slower speed. Anybody else confirm this?
     
    OFFGRID, Dec 7, 2017
    #2
    JKBob 25 likes this.
  3. Dec 8, 2017 at 7:00 PM
    #3
    JKBob 25

    #3
    JKBob 25 Well-Known Member

    Joined:
    Mar 22, 2017
    Member:
    #1197
    Messages:
    3,894
    Gender:
    Male
    First Name:
    Bob
    Jersey Shore, NJ
    Vehicle:
    2016 JK Wrangler Sport
    If your Speedo gear doesn't fix the issue. I'd pick up a programmer as @OFFGRID suggested. A Superchip is fairly cheap and would do the trick.
     
    JKBob 25, Dec 8, 2017
    #3
  4. Dec 9, 2017 at 7:44 PM
    #4
    kyletraci

    #4
    kyletraci [OP] New Member

    Joined:
    Dec 7, 2017
    Member:
    #2030
    Messages:
    4
    Gender:
    Male
    First Name:
    Kyle
    Vehicle:
    2001 Wrangler Sport
    I will look at a getting a programmer. I work on a military base and they are crazy about speeders. Thanks for the help!
     
    kyletraci, Dec 9, 2017
    #4
    JKBob 25 likes this.
  5. Dec 9, 2017 at 9:03 PM
    #5
    LYFZGOOD

    #5
    LYFZGOOD members

    Joined:
    Jul 22, 2017
    Member:
    #1701
    Messages:
    984
    Gender:
    Male
    Wv
    Vehicle:
    1998 Jeep Wrangler Sahara
    2.5” lift 32x11.50x15,cold air intake, Smittybuilt stainless steel Bumpers, rough county pocket flares,Rugged ridge seat covers and floor mats. Conversion LED headlights 20’ LED Light bar hardtop,soft top,bikini top.
    Well this is what I did I called Quadratec and told my rear end gears and they in return told me what speedo gear I needed and with my GPS I’m right on. FYI there # is 800-745-5337 hope this helps.
     
    LYFZGOOD, Dec 9, 2017
    #5
    JKBob 25, aggrex and chris4x4 like this.
Register FREE to Reply!
To Top