How To: Coilovers and strut tube modification (with pictures!)

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • rs4pro3
    R3V Elite
    • Oct 2003
    • 5808

    #16
    Just start browsing some of the circle track shops, AFCO makes some sleeves that work as well as the adjusters. I'd heard that before so I just starting searching for coilover hardware and found 3 or 4 companies that sold stuff that would work. None have the sleeves in the right length so I just purchased a 7" long one and cut it in half and it fit perfectly.
    85 325e 2.7 ITB'd stroker

    Comment

    • golde30
      R3V OG
      • Nov 2003
      • 11464

      #17
      wow, looks like a small bit of work there. i didnt do any cutting of my struts to install my GC...but then, i will probably end up bottoming out alot...
      IG: @Baye30

      FRONT VALENCE IS ZENDER!!! STOP FILLING MY PM BOX PPL!!!

      Comment

      • 2002maniac
        R3V Elite
        • Feb 2005
        • 4260

        #18
        Originally posted by E30_pilot

        BTW Sean TIG isn't for steel welding.;)
        wrong

        Comment

        • Borat
          E30 Addict
          • Jan 2005
          • 494

          #19
          Originally posted by E30_pilot

          BTW Sean TIG isn't for steel welding.;)
          [sarcasm] yeah, and mig isn't for aluminium... [/sarcasm]

          Comment

          • Sean
            R3V Elite
            • Oct 2003
            • 5793

            #20
            Originally posted by mspiegle
            I MIG'd that. Thanks for the compliment :D
            They are very nice welds! :D



            I think I might have confused the two. I thought TIG was MIG - I MIG welded, and that is definately easy. TIG is the harder stuff.
            - Sean Hayes

            Comment

            • mspiegle
              E30 Enthusiast
              • Oct 2003
              • 1026

              #21
              MIG is actually a newer technology than TIG. MIG is faster and cheaper, but it isn't as pretty looking. Both TIG and MIG can welding steel, aluminum, stainless, and magnesium. TIG can also weld dissimilar metals.
              Michael Spiegle

              '01 Ford Escape / Daily Driver
              '99 M3 / Track Car
              '87 325is bronzit / wtf car
              '06 Daytona Triumph 675 / Daily Rider

              Comment

              • mspiegle
                E30 Enthusiast
                • Oct 2003
                • 1026

                #22
                Here's a picture of the final product. I managed to get both assemblies to within 1mm of each other... not bad for all freehand work.

                Michael Spiegle

                '01 Ford Escape / Daily Driver
                '99 M3 / Track Car
                '87 325is bronzit / wtf car
                '06 Daytona Triumph 675 / Daily Rider

                Comment

                • mspiegle
                  E30 Enthusiast
                  • Oct 2003
                  • 1026

                  #23
                  A few more pics:





                  Michael Spiegle

                  '01 Ford Escape / Daily Driver
                  '99 M3 / Track Car
                  '87 325is bronzit / wtf car
                  '06 Daytona Triumph 675 / Daily Rider

                  Comment

                  • mr-siv
                    Noobie
                    • Dec 2005
                    • 4

                    #24
                    how do you hold the threads that the adjusters screw up and down on from turning on the strut housing? or are you not woried about this / hoping friction will take care of it? since you have probably been driving on it for some time by now, have you had problems with the coilovers adjusting them selves?

                    - Jason

                    Comment

                    • Teaguer
                      R3V OG
                      • Sep 2004
                      • 6167

                      #25
                      ^ The threaded sleeve always just rests on the lower lip without being bolted or welded on .

                      Even if you buy a nice set of $2500 Ground Controls this is the way it is .
                      The lower adjustable perch has recessed allen screws that tighten it to the threaded sleeve so there is no way that the threaded part will spin around .

                      E30 M3 / E30 325is / E34 525iT / E34 535i

                      Comment

                      • Rocla
                        E30 Modder
                        • Aug 2006
                        • 922

                        #26
                        Originally posted by Teaguer
                        ^ The threaded sleeve always just rests on the lower lip without being bolted or welded on .

                        Even if you buy a nice set of $2500 Ground Controls this is the way it is .
                        The lower adjustable perch has recessed allen screws that tighten it to the threaded sleeve so there is no way that the threaded part will spin around .
                        I welded my sleeves on strut.

                        My assembly has separate "locking plate" beneath the adjuster, after finding proper position I just tighten the locking plate against the adjuster.
                        Current:

                        BMW 320i 2d 2.0 m20 -88
                        BMW 325i Cabriolet 2.5 m50 -88
                        BMW 316i touring 1.6 m40 -90
                        BMW 320i 4d 2,2 m54 -01

                        Comment

                        • trent

                          #27
                          Originally posted by Teaguer
                          ^ The threaded sleeve always just rests on the lower lip without being bolted or welded on .

                          Even if you buy a nice set of $2500 Ground Controls this is the way it is .
                          The lower adjustable perch has recessed allen screws that tighten it to the threaded sleeve so there is no way that the threaded part will spin around .

                          When I built mine I cut them perfect so that the gland nut holds them down when tighting.

                          Comment

                          • Teaguer
                            R3V OG
                            • Sep 2004
                            • 6167

                            #28
                            Originally posted by trent
                            When I built mine I cut them perfect so that the gland nut holds them down when tighting.
                            Yeah my Ground Control housings are buil in this maner also .
                            Basically the threaded part is loose but the insert nut holds it down .

                            E30 M3 / E30 325is / E34 525iT / E34 535i

                            Comment

                            • JDMpower
                              E30 Mastermind
                              • Sep 2006
                              • 1771

                              #29
                              [newb flame suit /on]

                              If I get a ground control setup...I need to chop/weld my strut housings?

                              [newb flame suit /off]
                              '89 "is" = M technic II build mode.

                              sigpic

                              Comment

                              • Rocla
                                E30 Modder
                                • Aug 2006
                                • 922

                                #30
                                Originally posted by trent
                                When I built mine I cut them perfect so that the gland nut holds them down when tighting.
                                I use Bilstein sports and their nut is too small to hold the sleeve.
                                Current:

                                BMW 320i 2d 2.0 m20 -88
                                BMW 325i Cabriolet 2.5 m50 -88
                                BMW 316i touring 1.6 m40 -90
                                BMW 320i 4d 2,2 m54 -01

                                Comment

                                Working...