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  1. #51
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    today it was the first ride with my "new" car and i will tell you my opinion about 155 2.5 TD gears. it is a bit tiring at short trips because i need at least 4,5k rpm with 4th gear to change in 5th. i had almost 150 km/h with 4.1k rpm . for a long trip to national roads it is the perfect choice in my opinion

  2. #52
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    [QUOTE=Stichl;24527]You also can use the Dedra Box, it fits with no modifications and it has the same 3.1 final drive like Fiat Coupe.
    It says a bit later at this tread that the final drive for the dedra is 3,93?

    As I read it the dedra has the lowest final drive.

  3. #53
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    Gear ratio formula:

    MPH = RPM/GEAR RATIO x WHEEL DIA/335

    wHeel dia in inCHes
    gear ratio = ratio gear x ratio diff

    (sorry for HIGHER Case letters, on tHis forum my H,C,V do not work in lower Case)

  4. #54
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    Thanks for that ecuation. I guess wheel diam. Includes the tyre profile too so you mean full wheel cycle

  5. #55
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    Yes measure thread to thread(front to back)

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