4+3 on a 85C

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  • Berndt U.
    Frequent User
    • January 1, 1999
    • 68

    #1

    4+3 on a 85C

    Hello
    At this time I look for helb an a 4 plus 3 Transmission under a 85 Coupe.
    The Car is compl. original and has only one problem.
    The 4+3 Trans will not shift in first and in Revese.
    Any Idea , or can we conversion to a 6 speed , Any experts out there
    Thanks for Helb
    Berndt
  • Bill Clupper

    #2
    Re: 4+3 on a 85C

    Need a little more detail on "won't go into" first or reverse, Do you get grinding of the gears, or it will not go in at all? the first and reverse operation of these is very much like a traditional 4-speed, so the first places to look would likley be at the clutch (Not releasing) or the shifter (not engaging the levers on the trans side cover). I believe that car uses a hydraulic clutch, so I'd start by looking at the fluid level in the M/C and looking for leaks at the slave cylinder that is bolted to the bellhousing.

    Comment

    • Bill Clupper

      #3
      Re: 4+3 on a 85C

      Need a little more detail on "won't go into" first or reverse, Do you get grinding of the gears, or it will not go in at all? the first and reverse operation of these is very much like a traditional 4-speed, so the first places to look would likley be at the clutch (Not releasing) or the shifter (not engaging the levers on the trans side cover). I believe that car uses a hydraulic clutch, so I'd start by looking at the fluid level in the M/C and looking for leaks at the slave cylinder that is bolted to the bellhousing.

      Comment

      • Jim T.
        Expired
        • March 1, 1993
        • 5351

        #4
        Re: 4+3 on a 85C

        Having to deal with hydraulic clutch operating system since 86 and not being there to look at the car I think that a new master cylinder and a new slave cylinder would make this car shift like a new one. Remember brake fluid absorbs water from day one and deteration of this system began in 85. If this was my car I would use silicone brake fluid. I have used it in my hydraulic clutch system for 4-5 years now and I am very satisfied with the performance.

        Comment

        • Jim T.
          Expired
          • March 1, 1993
          • 5351

          #5
          Re: 4+3 on a 85C

          Having to deal with hydraulic clutch operating system since 86 and not being there to look at the car I think that a new master cylinder and a new slave cylinder would make this car shift like a new one. Remember brake fluid absorbs water from day one and deteration of this system began in 85. If this was my car I would use silicone brake fluid. I have used it in my hydraulic clutch system for 4-5 years now and I am very satisfied with the performance.

          Comment

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