strut bending for neg camber - wheel spacer needed?

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  • funcrew
    E30 Fanatic
    • Jun 2007
    • 1223

    #1

    strut bending for neg camber - wheel spacer needed?

    I want to achieve substantial negative camber on a daily driver. I want to retain all rubber mounting throughout the suspension, so offset M3 strut mounts and fixed plates, but I'm not sure how much you can go with stock diameter springs & perches. I don't want adj camber plates w/out rubber mounting. Ditto for coilovers.

    Ireland Engineering & presumably others offer strut bending service to add negative camber. What are the pros and cons? I'm assuming that a wheel spacer would be needed to restore tire-to-strut clearance.

    Discuss.
    "If the sky were to fall tomorrow, the tall would die first."

    -Dr. Paul Forrester



    Do I LOOK like I need a psychological evaluation???
  • Liam
    Mod Crazy
    • Mar 2009
    • 753

    #2
    I've always had misgivings about bending suspension components.

    Outside of that I don't have any input.
    I'm Not Right in the Head | Random Rants and other Nonsense1st Order Logic Failure: Association fallacy, this type of fallacy can be expressed as (∃xS : φ(x)) → (∀xS : φ(x)), meaning "if there exists any x in the set S so that a property φ is true for x, then for all x in S the property φ must be true".

    Comment

    • jlevie
      R3V OG
      • Nov 2006
      • 13530

      #3
      The maximum possible front camber with stock springs varies a little by car (some have more, some less). The limit is when the upper spring perch runs into the inner wall of the strut tower. On my Spec E30 (H&R Race & GC race plates) that turns out to be 3.1deg. Some other Spec E30 cars have gotten 3.5 or so.
      The car makes it possible, but the driver makes it happen.
      Jim Levie, Huntsville, AL

      Comment

      • funcrew
        E30 Fanatic
        • Jun 2007
        • 1223

        #4
        Originally posted by jlevie
        The maximum possible front camber with stock springs varies a little by car (some have more, some less). The limit is when the upper spring perch runs into the inner wall of the strut tower. On my Spec E30 (H&R Race & GC race plates) that turns out to be 3.1deg. Some other Spec E30 cars have gotten 3.5 or so.
        Thanks for the info. All I want is 2.0 to 2.5 negative , BUT I want to keep rubber strut mounts.

        Keep the info coming.
        "If the sky were to fall tomorrow, the tall would die first."

        -Dr. Paul Forrester



        Do I LOOK like I need a psychological evaluation???

        Comment

        • Knockenwelle
          Grease Monkey
          • Jul 2008
          • 395

          #5
          Dunno if you've ever had one off the car, but those strut housings are pretty damn substantial chunks of steel. It makes the engineer in me kinda shudder when I think about bending one on purpose and bolting it back on the car...
          sigpic

          Mike

          '91 325i track car. Mostly...

          Comment

          • E30Driv3R
            E30 Enthusiast
            • May 2004
            • 1169

            #6
            I am just wondering, is there a reason for all of the camber? Also is there a reason why you dont want to switch from rubber bushings?

            I have coilovers/Vorschlag camber paltes on the e30, and i can get alot (-3.5-4.2*) camber.
            I know that is not the route you want to go but will you be switching any other suspension components? you would be able to gain alittle bit of camber by just lowering it....

            I just dont see a need for excessive camber on a DD. With the more camber your tires tend to follow ruts in the road, and make it somewhat of a pita. Plus like stated before bending of suspension components always makes me wonder.
            Dan Zickel
            1995 M3, 1991 318iS, 1987 325iS

            Comment

            • nando
              Moderator
              • Nov 2003
              • 34827

              #7
              why don't you run offset strut bearings and turn them around? then get an alignment and see where you are before doing anything you might regret.

              2-2.5 isn't really excessive either, the max reccomended factory range is -1.7up front so -2 is just ouside of that. -3 or more can be a bit much though.
              Build thread

              Bimmerlabs

              Comment

              • 2002maniac
                R3V Elite
                • Feb 2005
                • 4260

                #8
                Ireland has benty many strut towers in the past with great results. Call them and ask what they can do for you.

                Comment

                • Wh33lhop
                  R3V OG
                  • Feb 2009
                  • 11705

                  #9
                  Doesn't Ground Control have a pillowball mount designed for more comfort? I'd certainly give that a try before bending your struts.

                  paint sucks

                  Comment

                  • funcrew
                    E30 Fanatic
                    • Jun 2007
                    • 1223

                    #10
                    Originally posted by E30Driv3R
                    I am just wondering, is there a reason for all of the camber? Also is there a reason why you dont want to switch from rubber bushings?

                    I have coilovers/Vorschlag camber paltes on the e30, and i can get alot (-3.5-4.2*) camber.
                    I know that is not the route you want to go but will you be switching any other suspension components? you would be able to gain alittle bit of camber by just lowering it....

                    I just dont see a need for excessive camber on a DD. With the more camber your tires tend to follow ruts in the road, and make it somewhat of a pita. Plus like stated before bending of suspension components always makes me wonder.
                    Rubber mounted for a cushy & quiet ride. Ditto for H&R sports over race springs. On my old Toyota Echo, I went from zero to -2 front camber with cheesy eccentric strut bolts. There was a huge improvement in grip, with little effect on tire wear. E30's may be a little different, but that seemed like a good compromise. Car is for daily commuting & soccer dad use plus frequent SCCA autocross in STX.
                    "If the sky were to fall tomorrow, the tall would die first."

                    -Dr. Paul Forrester



                    Do I LOOK like I need a psychological evaluation???

                    Comment

                    • funcrew
                      E30 Fanatic
                      • Jun 2007
                      • 1223

                      #11
                      Originally posted by Wh33lhop
                      Doesn't Ground Control have a pillowball mount designed for more comfort? I'd certainly give that a try before bending your struts.

                      These appear to be for E36 and 2.5 inch coilovers. If available for stock OD springs and E30, this might be a really good option. Actually, maybe coilovers would be OK with rubber mounting. They may not have springs soft enough for me though.
                      "If the sky were to fall tomorrow, the tall would die first."

                      -Dr. Paul Forrester



                      Do I LOOK like I need a psychological evaluation???

                      Comment

                      • Wh33lhop
                        R3V OG
                        • Feb 2009
                        • 11705

                        #12
                        Originally posted by funcrew
                        These appear to be for E36 and 2.5 inch coilovers. If available for stock OD springs and E30, this might be a really good option. Actually, maybe coilovers would be OK with rubber mounting. They may not have springs soft enough for me though.
                        Unfortunately they aren't listed as standalone units for the E30, you may have to purchase a coilover kit (although I don't necessarily see how spring diameter would matter seeing as they are on a separate mount altogether).
                        paint sucks

                        Comment

                        • Liam
                          Mod Crazy
                          • Mar 2009
                          • 753

                          #13
                          I was thinking about this thread and I don't know if they are still available but there were some OEM upper strut bearings that were a + or - for camber back in the day, there were also offset inner ball joints.
                          I'm Not Right in the Head | Random Rants and other Nonsense1st Order Logic Failure: Association fallacy, this type of fallacy can be expressed as (∃xS : φ(x)) → (∀xS : φ(x)), meaning "if there exists any x in the set S so that a property φ is true for x, then for all x in S the property φ must be true".

                          Comment

                          • nando
                            Moderator
                            • Nov 2003
                            • 34827

                            #14
                            Originally posted by Liam
                            I was thinking about this thread and I don't know if they are still available but there were some OEM upper strut bearings that were a + or - for camber back in the day, there were also offset inner ball joints.
                            Originally posted by nando
                            why don't you run offset strut bearings and turn them around?
                            Build thread

                            Bimmerlabs

                            Comment

                            • Liam
                              Mod Crazy
                              • Mar 2009
                              • 753

                              #15
                              /\

                              You got me, I didn't even read before I posted.
                              I'm Not Right in the Head | Random Rants and other Nonsense1st Order Logic Failure: Association fallacy, this type of fallacy can be expressed as (∃xS : φ(x)) → (∀xS : φ(x)), meaning "if there exists any x in the set S so that a property φ is true for x, then for all x in S the property φ must be true".

                              Comment

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