driveshaft wobble after 5 speed swap *help*

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  • redbull 325is
    R3V OG
    • Feb 2004
    • 7471
    #1

    driveshaft wobble after 5 speed swap *help*

    Guys... this is really starting to piss me off.

    I completed a 5 speed swap on my car a few weeks ago. All went well except this f(*^&@*#&@!!! wobble around 20mph, it's usually right when i come out of first gear and into 2nd. I've played with the CSB 4 times now trying to see if it makes a difference to no avail Something interesting is that i preloaded the CSB by pushing it towards the front of car 1mm. After the 1mm i run out of space on the rails... is this my problem somehow? is my whole setup sitting wrong?. I have a new CSB, new guibo and i mated the rear auto driveshaft to a front 5 speed shaft trying to keep the weights close to their position as possible.


    Anyone had this before, any insight? Remember it's not a vibration.. its a wobble.. feels like there isn't even a Center support bearing down there!

    Thanks
    Julien
    Build Threads:
    Pamela/Bella/Betty/325ix/5-Lug Seta/S60R/Miata ITB/Miata Turbo/Miata VVT/951/325xi-6
    Tags: None
    • E304life
      Advanced Member
      • Jul 2005
      • 123
      #2
      2-pice drive shafts are balaced as one assembly so your rear auto section is not balanced to the 5sp section.

      You need a new drive shaft.

      Puting the 5spd back half back to the front half wont work because you didnt mark it befor taking it apart.

      Save your self the time and get a new shaft.

        Comment

        • redbull 325is
          R3V OG
          • Feb 2004
          • 7471
          #3
          thats what i was thinking about doing..



          Julien
          Build Threads:
          Pamela/Bella/Betty/325ix/5-Lug Seta/S60R/Miata ITB/Miata Turbo/Miata VVT/951/325xi-6

            Comment

            • netcsk
              E30 Mastermind
              • Apr 2004
              • 1609
              #4
              Originally posted by E304life
              2-pice drive shafts are balaced as one assembly so your rear auto section is not balanced to the 5sp section.

              You need a new drive shaft.

              Puting the 5spd back half back to the front half wont work because you didnt mark it befor taking it apart.

              Save your self the time and get a new shaft.

              Or he could just put the joints opposite. Like if the front has the joints horizontal, then you put the rear shafts joints verticle. If it wobbles, then take it out and turn one of them over 180 degrees.

                Comment

                • TheRedHorseman
                  Member
                  • Oct 2005
                  • 41
                  #5
                  call me crazy, but why not just take it to a driveline shop and have them balance them?

                    Comment

                    • 92 mtechnic cabrio
                      Honesty is not the best policy!
                      • Dec 2003
                      • 4907
                      #6
                      call me crazier, but why didn't you just use a rear manual half of the driveshaft too?
                      R.I.P 07/01/09 - 04/23/10 :(

                        Comment

                        • E304life
                          Advanced Member
                          • Jul 2005
                          • 123
                          #7
                          Originally posted by TheRedHorseman
                          call me crazy, but why not just take it to a driveline shop and have them balance them?
                          Good luck finding a drive shaft shop to balance your 2 pice drive shaft.

                            Comment

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