coil-over question

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  • IsItElectric?
    Advanced Member
    • Sep 2008
    • 115

    #1

    coil-over question

    I'm putting my GC suspension in now and I'm realizing the kit didn't come with anything to protect the shock / strut tubes (the steel rod coming out of the shock body) from the inevitable dust, dirt, and road debris that will hit it while driving it on the street.

    I'm not planning on driving the car on the street much anymore, but I still have to drive it to / from events.

    What have those w/ coil-overs done? Is this even a concern for a car that won't see much street use?

    Thanks,
    John
    1990 BMW 325i
  • Liam
    Mod Crazy
    • Mar 2009
    • 753

    #2
    I have used steering rack boots for this, there are also universal boots made just for this as well (try an off road shop).
    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

    • gazellebeigem3
      No R3VLimiter
      • Jun 2005
      • 3712

      #3
      Its not really a big deal if the car sees limited street use. The most important thing is that if it sees weather, is to use a lube on the adjuster sleeve. Something like a dry graphite lube.

      Comment

      • etxxz
        R3VLimited
        • Feb 2006
        • 2085

        #4
        any auto parts store sells these boots for shocks. w/ 2.5" ID springs you want to use steering boots. and regular ones on the rear. i'm in the same track/street situation as you.
        No more e30s for me.
        88 black BMW OBDII 332is dedicated track [sold]
        88 BMW OBDII bronzit 332is [RIP 03/08]
        91 BMW 325i [sold]
        86 Corolla 'Ae86' HB 20v trd [sold]
        http://youtube.com/watch?v=pTj7Hn9v5Rs

        Comment

        • IsItElectric?
          Advanced Member
          • Sep 2008
          • 115

          #5
          Thanks everyone. Steering rack boots seem to be the way to go, however a bit pricey, IMHO. I picked up a set of molded boots that will probably work, but they were $22 / ea from NAPA. Ouch.

          Going to try some off-road places today, hopefully I can get something less expensive.
          John
          1990 BMW 325i

          Comment

          • gearheadE30
            No R3VLimiter
            • Jun 2007
            • 3734

            #6
            Dunno if bilstein covers can be bought separately, but they work well and are very durable

            Project M42 Turbo

            Comment

            • PaintPro21
              Mod Crazy
              • Jul 2007
              • 660

              #7
              you don't need them. koni's and other standard non inverted inserts don't come with boots and they aren't spec'ed for track use only. the e34's and e39's and every other car running around on the road with those style inserts are having no problem.

              ApexRaceParts.com - Facebook - Twitter

              Comment

              • nando
                Moderator
                • Nov 2003
                • 34827

                #8
                Originally posted by PaintPro21
                you don't need them. koni's and other standard non inverted inserts don't come with boots and they aren't spec'ed for track use only. the e34's and e39's and every other car running around on the road with those style inserts are having no problem.
                yeah, I haven't had boots on my konis for 6 years. They won't fit inside the springs anyway, I tried!
                Build thread

                Bimmerlabs

                Comment

                • AlarmedBread
                  E30 Mastermind
                  • Sep 2006
                  • 1510

                  #9
                  No boots, plenty of mud and dirt doing rallyx, no issues.

                  Comment

                  • revhead888
                    Advanced Member
                    • May 2008
                    • 149

                    #10
                    im actually looking at getting GC coilovers, interested in seeing how the car sits. so if you have GC coilovers in your e30 can you post pics.

                    Comment

                    • IsItElectric?
                      Advanced Member
                      • Sep 2008
                      • 115

                      #11
                      Originally posted by PaintPro21
                      you don't need them. koni's and other standard non inverted inserts don't come with boots and they aren't spec'ed for track use only. the e34's and e39's and every other car running around on the road with those style inserts are having no problem.
                      Interesting. I've always run Bilstein HDs or Sports and they've always come w/ boots, and many industrial linear actuator application I've seen have some sort of bellows to prevent dust & dirt from marring the shaft.

                      I did learn recently that Bilsteins and Konis are engineered very differently from the standpoint of how they port the shock oil and where the nitrogen is stored. Perhaps this has something to do w/ it?
                      John
                      1990 BMW 325i

                      Comment

                      • IsItElectric?
                        Advanced Member
                        • Sep 2008
                        • 115

                        #12
                        Originally posted by revhead888
                        im actually looking at getting GC coilovers, interested in seeing how the car sits. so if you have GC coilovers in your e30 can you post pics.
                        I don't have them on yet, as I've spent lots of time preparing to get them on. The attached pictures are what I was up to last weekend, and I just got all new elastic stopnuts for pretty much all the connection points for the suspension to the chassis, knuckle, etc etc.

                        I'll post some when I get it all together.
                        Attached Files
                        John
                        1990 BMW 325i

                        Comment

                        • nando
                          Moderator
                          • Nov 2003
                          • 34827

                          #13
                          Originally posted by revhead888
                          im actually looking at getting GC coilovers, interested in seeing how the car sits. so if you have GC coilovers in your e30 can you post pics.
                          Just FYI - this depends on far too many variables to post a car on "ground controls" and make a decision based on stance or ride height. Spring length, rate, how the perch is modified, individual adjustments, tire size, etc. all influence the ride height. Some people are scraping the ground with their subframes and others still have 1/2" fender gap with the adjusters all the way to the bottoms. You will have to choose your components and modify appropriately to reach your goals.
                          Build thread

                          Bimmerlabs

                          Comment

                          • kishg
                            R3VLimited
                            • Sep 2006
                            • 2624

                            #14
                            no need for boots, get them if you want them but if your putting coilovers on and think $22 is expensive, something doesn't quite compute :)
                            '12 F30 328i Sport Line
                            '91 SpecE30 #523
                            '00 Ford F-350 Dually Tow Vehicle

                            BMWCCA #360858 NASA #
                            128290

                            Comment

                            • JRKOUPE
                              No R3VLimiter
                              • Dec 2004
                              • 3159

                              #15
                              Originally posted by kishg
                              no need for boots, get them if you want them but if your putting coilovers on and think $22 is expensive, something doesn't quite compute :)
                              K..wazzup..it does compute using R3v math.....
                              I love sitting down and just driving!

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