E30 steering help!!

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  • cgan
    Noobie
    • Jan 2012
    • 10

    #1

    E30 steering help!!

    Hello R3vlimited,

    This is getting really old...

    When I first got my E30, the steering was a little vague on center on the highway, but not so much that I didn't happily put about 10,000 miles on it in 8 months (and as a second car!).

    At the beginning of the summer, I decided to swap the tired stock suspension for Bilstein sport shocks and Eibach pro plus (lowered) springs and sway bars all around.

    I was hoping that this upgrade would make the car feel totally planted and dialed in at the higher speeds I wanted to exploit, but ever since the steering has been just plain AWFUL. Especially on the highway, where the car drifts, darts, wanders, and responds to steering inputs really really lazily. And feels dead on center.

    And now the saga begins.

    Here's what's been done:

    -New tie rods, inner and outer
    -replaced steering rack (twice)
    -replaced steering knuckle 'u joint'
    -New top strut mounts (when suspension was installed)
    -new control arm bushings (powerflex purple), recent ball joints
    -alignment after each rack replacement
    -tire pressure checked and even all around.


    After replacing the rack the first time, the steering would 'seize' up about 30 degrees off-center to the left - basically the steering would lock and then pop back into motion with a nice 'clunk.' Furthermore, highway stability was not improved.

    I got a second replacement rack from rackdoctor, and the seizing problem is gone - it seems I had a defective rack.

    However, the car is still super unstable at speed. The steering feels just plain lazy, and it's definitely not fun to drive.

    The steering problem really began in earnest *after* I replaced the stock F&R suspension with the Bilstein sport shocks and Eibach pro-plus springs and sway bars.

    So: 1) what else could possibly be at fault? The shop I brought it to for troubleshooting says that everything is tight as a drum in the front end. I acknowledge that the rear trailing arm/subframe bushings were not overhauled, but I (and the guys at my indie old-school BMW shop) really don't believe that there is enough play to cause this big of a problem.

    2) should the new suspension setup really wreak this much havoc on the steering system? I've experimented with different toe settings to compensate for the exaggerated camber, with no success.

    3)would an e36 rack help this out? Rich @ rackdoctor.net has been extremely helpful and is willing to swap my e30 setup for one of those, so this is a possibility. I'd rather exhaust everything else first, though.


    Has anybody else who's installed this type of aftermarket suspension setup had this kind of problem? Do I need to revert to stock suspension?


    WHAT ELSE IS LEFT TO DO??!! I am so frustrated with this damn car. I love her so, but come on.............


    thanks
  • dashboardmonkey
    FUCK YOUR WAFFLES
    • Jun 2008
    • 6158

    #2
    Replace rear subframe and trailing arm bushings. I replaced mine and it made the car feel so much better. I know it sounds weird but it makes a huge difference.
    -Andy

    Comment

    • jlevie
      R3V OG
      • Nov 2006
      • 13530

      #3
      What were the alignment numbers for the rear wheels? There are no adjustments there, but an alignment machine can tell you what the numbers are.
      The car makes it possible, but the driver makes it happen.
      Jim Levie, Huntsville, AL

      Comment

      • IRON-E
        I waste 90% of my day here and all I got was this stupid title
        • Dec 2007
        • 16548

        #4
        H&R race or IE3s, might give you better handling when turning. I have heard that Eibachs are too soft but, I don't know from personal experience.

        Good luck.
        @IRON-E30 aka Edwin:D

        Comment

        • cgan
          Noobie
          • Jan 2012
          • 10

          #5
          Thanks for the idea. But still, why would the eibachs be worse than stock in this regard?

          And I'll check the alilgnment numbers

          Comment

          • Herr Faust Schinken
            No R3VLimiter
            • Feb 2012
            • 3580

            #6
            if none of that works i have one of dees i need to put it in but a friends car has one and it gives a ton more feed back
            88 325is Five Speed
            Lachssilber

            Comment

            • cgan
              Noobie
              • Jan 2012
              • 10

              #7
              Honestly the front end is feeling pretty tight at this point. I'm thinking the back end might just be the remaining culprit. Updates to follow, but more ideas are welcome

              Comment

              • bmmernut
                Noobie
                • Aug 2012
                • 23

                #8
                First thing I would do is check the alignment on all four wheels. Some things to look for are bad alignment at the front or rear, or a bent rear swing arm.

                Originally posted by cgan
                Honestly the front end is feeling pretty tight at this point. I'm thinking the back end might just be the remaining culprit. Updates to follow, but more ideas are welcome

                Comment

                • cgan
                  Noobie
                  • Jan 2012
                  • 10

                  #9
                  Currently rear alignment numbers are

                  Left: -2.5 camber, .13 toe
                  Right -2.7 camber, .05 toe

                  Also, front L camber is -1.4, front R is -2.3.

                  Does the disparity in f camber make a big difference? It's been suggested to me that it shouldn't affect tracking too much. Truth or fiction?

                  Comment

                  • nickmcc92
                    E30 Addict
                    • Dec 2012
                    • 442

                    #10
                    I'm having the same problem. Any solution?

                    Comment

                    • jlevie
                      R3V OG
                      • Nov 2006
                      • 13530

                      #11
                      Originally posted by cgan
                      Currently rear alignment numbers are

                      Left: -2.5 camber, .13 toe
                      Right -2.7 camber, .05 toe

                      Also, front L camber is -1.4, front R is -2.3.

                      Does the disparity in f camber make a big difference? It's been suggested to me that it shouldn't affect tracking too much. Truth or fiction?
                      I didn't see this until now, but that asymmetric alignment will cause handling/steering problems. The front camber errors are from damage to the control arms or body. The rear could be bad bushings or a bent trailing arm.
                      The car makes it possible, but the driver makes it happen.
                      Jim Levie, Huntsville, AL

                      Comment

                      • nickmcc92
                        E30 Addict
                        • Dec 2012
                        • 442

                        #12
                        I have cross camber. Also off by a little over 1 degree on drivers side, all new parts. My steering isn't perfect but would this actually cause a problem?

                        Comment

                        • jlevie
                          R3V OG
                          • Nov 2006
                          • 13530

                          #13
                          Originally posted by Nmccahera92
                          I have cross camber. Also off by a little over 1 degree on drivers side, all new parts. My steering isn't perfect but would this actually cause a problem?
                          Yes!
                          The car makes it possible, but the driver makes it happen.
                          Jim Levie, Huntsville, AL

                          Comment

                          • fourmotioneer
                            Advanced Member
                            • Dec 2012
                            • 159

                            #14
                            Any luck addressing this issue?
                            sigpic

                            Comment

                            • mr ilia
                              E30 Addict
                              • May 2011
                              • 582

                              #15
                              I also had sterring issues. Changed everything in the front, but this hasnt fixed the issue either....I made decision to change rear subframe bushings.
                              This addressed a lot of issues and some more. Steering is now way better...
                              Originally posted by cgan
                              Honestly the front end is feeling pretty tight at this point. I'm thinking the back end might just be the remaining culprit. Updates to follow, but more ideas are welcome

                              Comment

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