adding height to H&R race?

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  • Daeldalus
    Grease Monkey
    • Nov 2012
    • 304

    #1

    adding height to H&R race?

    I plan to make my car a DD and an AutoX car and i like a stiff ride anyway
    so just about the only way for me to go is with H&R race springs(coilovers
    not allowed in my class) but a 1.6 inch drop may be a bit too low for the
    roads i drive on a daily basis, I don't know for sure but i do not want to
    destroy an oil pan or puncture my gas tank.

    so the question is, is there any thing i can make to give me say another 1/2
    inch of height? i was thinking i could make a rubber spacer to go under the
    rear spring pad but i don't know if that would work and i don't have a good
    idea of what to do for the fronts...... so is there anything that can get me
    what i am looking for here?
  • priapism
    E30 Enthusiast
    • Mar 2010
    • 1182

    #2
    That kind of eliminates the point of those H&R Race springs...why not just go with the Sports, which already sit higher?
    sigpic
    -Sean : 91 Calypso 325i : Castro Motorsports SoCal Spec E30 #33

    Comment

    • brent5631
      E30 Addict
      • Jun 2012
      • 421

      #3
      Because of spring rates. Adding a spacer should be no issue and get you what you want. Maybe on the cheap you can double up in the rubber idolaters that are already there.
      sigpic

      Comment

      • priapism
        E30 Enthusiast
        • Mar 2010
        • 1182

        #4
        Yeah but it raises the CoG up. I guess it's doable...
        sigpic
        -Sean : 91 Calypso 325i : Castro Motorsports SoCal Spec E30 #33

        Comment

        • Daeldalus
          Grease Monkey
          • Nov 2012
          • 304

          #5
          should i just fab up some custom skid plates to cover the oil pan and other vital bits and just not worry about the height?

          does the H&R race springs have any tire clearance issues under hard driving?

          Comment

          • MR 325
            Moderator
            • Oct 2003
            • 37825

            #6
            There are OEM spring pads that are a lot thicker, you could install those.

            Part number is 31331128522 for the front. If you use this one on top and bottom you will gain 12mm of height.

            Part number is 33531136387 for the rear. This is only designed for the bottom in the rear but you can probably use it top and bottom. Using it top and bottom will give you a total of 10mm additional height.
            BimmerHeads
            Classic BMW Specialists
            Santa Clarita, CA

            www.BimmerHeads.com

            Comment

            • Daeldalus
              Grease Monkey
              • Nov 2012
              • 304

              #7
              Originally posted by MR 325
              There are OEM spring pads that are a lot thicker, you could install those.

              Part number is 31331128522 for the front. If you use this one on top and bottom you will gain 12mm of height.

              Part number is 33531136387 for the rear. This is only designed for the bottom in the rear but you can probably use it top and bottom. Using it top and bottom will give you a total of 10mm additional height.

              yes... that is the kind of answer i was looking for.
              as long as they are not stupidly expensive i think ill try that.

              Comment

              • bmwguy325is
                E30 Fanatic
                • May 2011
                • 1262

                #8
                Originally posted by Daeldalus
                I plan to make my car a DD and an AutoX car and i like a stiff ride anyway
                so just about the only way for me to go is with H&R race springs(coilovers
                not allowed in my class)........
                What class will not allow coil overs?
                sigpic"If one does not fail at times, then one has not challenged himself." -Ferdinand Porsche
                The ugly car: http://www.r3vlimited.com/board/showthread.php?t=209713

                Comment

                • mulletman
                  E30 Modder
                  • May 2012
                  • 801

                  #9
                  Last I checked, bimmerworld also sold spring pads in a variety of thicknesses.

                  Comment

                  • Sagaris
                    R3VLimited
                    • Sep 2009
                    • 2243

                    #10
                    Originally posted by priapism
                    Yeah but it raises the CoG up. I guess it's doable...
                    Typical MacPherson stut suspension on a passenger car will have the roll center decrease faster than the cg decreases when lowering ride height, which increases roll couple and thus body roll. Of course the cg and roll couple would need to be determined to say what amount of lowering/lifting yields the best result BUT the moral of the story is, lowering the cg is good, but on many cars the roll couple increases quickly and assuming the spring rates are the same, you can end up with less body by increasing the ride height.

                    Comment

                    • Daeldalus
                      Grease Monkey
                      • Nov 2012
                      • 304

                      #11
                      Originally posted by bmwguy325is
                      What class will not allow coil overs?
                      I plan on running in STX which will allow coilovers on the front since the
                      original suspension in the front is the same spring setup as a coilover.
                      but in the rear i cannot switch to a coilover because the original location
                      of the rear spring is not over the rear shock.

                      so instead of trying to find just front coilovers i figured i would just do the
                      whole car on H&R race springs.

                      Comment

                      • bmwguy325is
                        E30 Fanatic
                        • May 2011
                        • 1262

                        #12
                        Originally posted by Daeldalus
                        I plan on running in STX which will allow coilovers on the front since the
                        original suspension in the front is the same spring setup as a coilover.
                        but in the rear i cannot switch to a coilover because the original location
                        of the rear spring is not over the rear shock.

                        so instead of trying to find just front coilovers i figured i would just do the
                        whole car on H&R race springs.
                        Wow ok.
                        So HR threaded spring perches in the rear wont work? Then you can adjust your ride height all sorts of ways.
                        sigpic"If one does not fail at times, then one has not challenged himself." -Ferdinand Porsche
                        The ugly car: http://www.r3vlimited.com/board/showthread.php?t=209713

                        Comment

                        • Nsquared97
                          E30 Mastermind
                          • Sep 2010
                          • 1656

                          #13
                          Originally posted by Daeldalus
                          I plan on running in STX which will allow coilovers on the front since the
                          original suspension in the front is the same spring setup as a coilover.
                          but in the rear i cannot switch to a coilover because the original location
                          of the rear spring is not over the rear shock.

                          so instead of trying to find just front coilovers i figured i would just do the
                          whole car on H&R race springs.
                          I've got great news for you, most E30 coilover setups are perfectly legal in STX. Reason being that most 'coilover' setups for the rear of our car keep the spring in its original location (not technically a 'coil-over-damper' setup like you would think when you hear coilover). Check out GC's coils, or even look at IE's rear kit:

                          Comment

                          • misterCAFE
                            Member
                            • Oct 2012
                            • 57

                            #14
                            ^^ this guy is correct about most coils not being "true coilovers" as most do not surround the rear shock. go gc and be done

                            Comment

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