Volvo RWD 120-130 Forum

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Speedo drive gear confusion. 120-130 1963

posted by  someone claiming to be anthony on  Fri Sep 24 22:57 CST 2004 [RELATED]

Hello all...
After all the excitement with the new car, the speedo stopped working. Everything is working well except for the gear. This car is a b18 with a M40.
The PO put a "yellow" gear with 16-teeth into the transmission, which chewed the plastic gear almost round. (The gear is from a 144, because I have a m40 from an early 144 here.)
So how many teeth is the real thing suppost to have? I looked into CVI and it says "b18- 18 teeth" hummm...
I called the dealer up, he doesn't know how many teeth things have (part is in the warehouse) But he says that he has a "BLUE" and a "YELLOW" gear.
From what I feel, I think I need a "blue" gear, is that right?

Please lighten me up, I'd love to have the speedo rolling again... (A cool function.)


(Or my last option would be to fit both the gears from the 144 into the rear housing of the 122)








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    Speedo drive gear confusion. 120-130 1963

    posted by  Bennie on  Sat Sep 25 07:24 CST 2004
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    last visit: Wed Nov 28 03:03 CST 2007
    [RELATED]

    Assuming you've got the 4.1 diff ratio I'm 99% sure you would need the yellow gear. What gear was in it before the dealer changed it?

    Cheers, ben
    --
    P131, '65, B20B+M47. P131, '69, B20E+AW71L+LSD. (www.tinustechniek.tk)








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      Speedo drive gear confusion. 120-130 1963

      posted by  someone claiming to be anthony on  Sat Sep 25 16:08 CST 2004 [RELATED]

      Hello.
      Nah, the reason why I don't think it is a yellow gear is because the one inside the car got chewed up badly and you could see that it wasn't the right module judging by the marks on the gear.
      I also have a good used yellow one, tried to put it in, it wouldn't slide and mate with the drive gear. So I'm assuming I'll need a new one. (Unless my drive gear is also damaged, which I can't see...hehe.)








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    Speedo drive gear confusion. 120-130 1963

    posted by  someone claiming to be anthony on  Sat Sep 25 05:08 CST 2004 [RELATED]

    Forgot to mention, the car is a 4 door.








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      Speedo drive gear confusion. 120-130 1963

      posted by  walrus3 on  Sat Sep 25 06:38 CST 2004
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      last visit: Mon Dec 2 14:20 CST 2013
      [RELATED]

      What makes the difference is not the engine, it's the rear end ratio.
      Yours is 4.1 so you need the appropriate gear for that. Sorry, don't remember
      which color it is.
      --
      George Downs, Bartlesville, Oklahoma, Central US







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