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me swapping Diff? maybe?

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    #1

    me swapping Diff? maybe?

    i have a 318is and i dont have the limited slip. well at least i dont think i have b/c i do have an "S" on the diff tag. would a 3.73 LSD from a 325 fit, also what would it do to my speed? will i slow down some? what will happen?

    i do know however, LSD is better than Open. Duh


    thanks
    Jeff
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    #2
    what year is it i thought they all came with LSD's that was another bonus to the s wasn't it? or was it just an option for that too.. hmm it wont slow you down, a 325 diff is the same isn't it? anyways you will have better traction of the line so if anything you will speed up.

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      #3
      If your diff tag number starts with an "S" you should already have limited-slip. If not, it may be time to have the diff rebuilt...Just my .02.

      Comment

        #4
        From what I've gathered, 4.10's are stock in the 318is. LSD was an option that many didn't have. I *think* all rwd e30 diffs are interchangeable. Someone please correct me if I'm wrong.

        Comment

          #5
          Re: me swapping Diff? maybe?

          Don't put in a 3.73 lsd, get the small case 4.10lsd or a 4.27lsd.

          M

          Originally posted by Jhinck1414
          i have a 318is and i dont have the limited slip. well at least i dont think i have b/c i do have an "S" on the diff tag. would a 3.73 LSD from a 325 fit, also what would it do to my speed? will i slow down some? what will happen?

          i do know however, LSD is better than Open. Duh


          thanks
          Jeff

          Comment

            #6
            Originally posted by btm4k
            From what I've gathered, 4.10's are stock in the 318is. LSD was an option that many didn't have. I *think* all rwd e30 diffs are interchangeable. Someone please correct me if I'm wrong.
            From what I've read on the forums, the 4-bangers came with the small-case diff and the sixers came with a "large" case diff. Other than that I don't know the complexities of swapping one for the other....

            Comment

              #7
              Re: me swapping Diff? maybe?

              well my idea is, as long as it doesn't slow me down that much, i would like to have my rpm's at 75-85 lower than what it is at. i just dont like crusin at such hi rpm's on the freeway.

              i do know i dont have the "S" on my diff, i looked when i put on some suspension.

              thanks
              jeff
              Originally posted by Mike 91 318ic
              Don't put in a 3.73 lsd, get the small case 4.10lsd or a 4.27lsd.

              M

              Originally posted by Jhinck1414
              i have a 318is and i dont have the limited slip. well at least i dont think i have b/c i do have an "S" on the diff tag. would a 3.73 LSD from a 325 fit, also what would it do to my speed? will i slow down some? what will happen?

              i do know however, LSD is better than Open. Duh


              thanks
              Jeff

              Comment

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