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  • Which speedometer gear?

    I need a new gear since we put the 33's on my TJ, anyone know the specifics on what I need w/3.73's? Rick says there's a shop down in Riverside that sells the things, or should I go to the local dealership since it's muuuch closer?
    :gun:'99 TJ Sport:gun:

  • #2
    TJ Speedo Gear Chart
    Tire | 38" |37" | 36"| 35"| 33"| 32"| 31"| 30"
    R&P
    5.13 | 38 | 39 | 40 | 41 | 43 | 45 | 46 | 48
    4.88 | 36 | 37 | 38 | 39 | 41 | 43 | 44 | 46
    4.56 | 34 | 35 | 36 | 37 | 39 | 40 | 42 | 43
    4.11 | 31 | 32 | 33 | 34 | 36 | 37 | 38 | 40
    3.73 | 27 | 28 | 28 | 29 | 31 | 32 | 33 | 34

    To arrive at a correct Jeep part number add the tooth count for the speedometer gear to the end of 520676. For a 26 tooth gear the correct part number is: 52067626
    [COLOR=blue]Chris[/COLOR]
    SAVE JOHNSON VALLEY!!! - CLICK HERE
    Ya Savvy?

    Motech Performance

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    • #3
      Re: Which speedometer gear?

      Originally posted by sarah
      I need a new gear since we put the 33's on my TJ, anyone know the specifics on what I need w/3.73's? Rick says there's a shop down in Riverside that sells the things, or should I go to the local dealership since it's muuuch closer?
      I paid $10 at the dealer.
      1994 Toyota, dual cases, 5.29 axles with ARB's

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      • #4
        ooo! rockin' guys, thanks for the help.
        :gun:'99 TJ Sport:gun:

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        • #5
          Originally posted by sarah
          ooo! rockin' guys, thanks for the help.
          No prob! I need a 39 tooth if anyone has one lying around.
          Thanks
          [COLOR=blue]Chris[/COLOR]
          SAVE JOHNSON VALLEY!!! - CLICK HERE
          Ya Savvy?

          Motech Performance

          Comment


          • #6
            Originally posted by Dukes69
            No prob! I need a 39 tooth if anyone has one lying around.
            Thanks
            i need a 31
            :gun:'99 TJ Sport:gun:

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            • #7
              I've got a 40 tooth if anybody wants it
              I got your jeep thing, now it burns when I pee

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              • #8
                Re: Re: Which speedometer gear?

                Originally posted by igofshn
                I paid $10 at the dealer.
                I had to pay $300 for a "tuning computer" to recalibrate a Chevy truck's speedo for 33".

                If only changing gear ratios was so cheap....

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                • #9
                  Sarah,
                  The speedo gear that is in my Jeep right now is what you need . . . 33's and 3.73's. You can have it once I get/find a 39 tooth. I need a 39 tooth in trade!
                  [COLOR=blue]Chris[/COLOR]
                  SAVE JOHNSON VALLEY!!! - CLICK HERE
                  Ya Savvy?

                  Motech Performance

                  Comment


                  • #10
                    Quick Calc for speedo gear go to

                    www.jeeptech.com/javaAps/Speedo.html

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                    • #11
                      How do I know what size gears I have in my Diff's

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                      • #12
                        If you look at the cover of your rear diff, there should be a little metal tag on one of the bolt heads stamped with your gear ratio.




                        Buy your Speedo gears here - Macromotive.com
                        Last edited by Dukes69; 01-10-04, 11:03 AM.
                        Sean M Higgins




                        "We all got it coming kid"

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                        • #13
                          Ok I got a question. I installed the 241OR rubicon T-case in my TJ, how do you recalibrate this speedo? T-case doesnt have the gear like the 231. Any rubi owners get past this.

                          I bought a dakota digital recalibration unit but I havent figured out how to use it.

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                          • #14
                            I believe you have to have the PCM calibrated. I have heard that the speedometers read fast in the rubicons (mine included). People are going to the dealer to have them reprogrammed. Mine reads about 3 or 4% fast, which would be just about right if I were to put 33's on it. I don't know if that calibration is will help you though, since you are still using your original PCM, not one from a rubicon.
                            olllllllo <--- If you can read that, roll me over!

                            Price is soon forgotton, quality is not.

                            KG6OWO

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