Swap 1/4 Mile Thread

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  • skatebline
    Advanced Member
    • Sep 2006
    • 167

    #421
    Alright guys i just got back from the track this weekend and have some numbers to show you all to what advice you have me. Im feeling i could do alot better with some more practice but ill show my best time slip of the day. This is also with the 3.25 diff in stead of the 2.93 diff.




    I ended up snapping my axle right at the joint by trying to launch harder due to having a huge wheel hop issue. What do most guys do to cure that problem?
    Also that same day i had it dynoed with DynoJet and heres that print out of that...


    Comment

    • nando
      Moderator
      • Nov 2003
      • 34827

      #422
      you need more rebound control in the rear, or softer springs.
      Build thread

      Bimmerlabs

      Comment

      • skatebline
        Advanced Member
        • Sep 2006
        • 167

        #423
        Rebound control? Like what? What should I use

        Comment

        • nando
          Moderator
          • Nov 2003
          • 34827

          #424
          your shocks are too weak to control the springs. More rebound will keep them from hopping. If they are old, replace them. Konis for example have adjustable rebound control.

          Or you could go the other way with softer springs, that are easier for your shocks to control.
          Build thread

          Bimmerlabs

          Comment

          • skatebline
            Advanced Member
            • Sep 2006
            • 167

            #425
            Hmmm alright! Thanks ill try shocks. What are some real strong shocks. I'm running the bilstien sports

            Comment

            • justin_l_
              E30 Enthusiast
              • Jun 2007
              • 1079

              #426
              Totally called that, congrats! I would recommend picking up some koni's.

              Comment

              • skatebline
                Advanced Member
                • Sep 2006
                • 167

                #427
                OK sweet! thats exactly what i wanted was what someone recommend. Is there a certain koni that would be better for me or is there just one?

                Single or Double adjustable?

                Comment

                • Raxe
                  R3V Elite
                  • Nov 2006
                  • 5346

                  #428
                  S38B36 with a JimC chip. I've been to the track a few times this summer, this was the best slip I could find laying around my computer (left lane). I can't drag worth a damn.

                  Last edited by Raxe; 10-05-2010, 08:19 PM.

                  >> 1988 3.1 ITB E30 /// 2002 E46 M3 6MT / 2008 335xi 6MT / 1991 S38B36 E30 (sold)

                  Comment

                  • nando
                    Moderator
                    • Nov 2003
                    • 34827

                    #429
                    Originally posted by skatebline
                    OK sweet! thats exactly what i wanted was what someone recommend. Is there a certain koni that would be better for me or is there just one?

                    Single or Double adjustable?
                    single is fine, it's the rebound adjustment you want.
                    Build thread

                    Bimmerlabs

                    Comment

                    • Danny
                      Moderator
                      • Feb 2008
                      • 14217

                      #430
                      Originally posted by Raxe
                      S38B36 with a JimC chip. I've been to the track a few times this summer, this was the best slip I could find laying around my computer. I can't drag worth a damn.
                      that's terrible.

                      Comment

                      • Raxe
                        R3V Elite
                        • Nov 2006
                        • 5346

                        #431
                        Originally posted by Danny
                        that's terrible.
                        I figure I should be able to get it down at least another second to the mid 13's if I launch the car, maybe more with better timing. It's really not that fast off the line though.. power doesn't start working until 3rd and 4th gear. It's a monster on the highway but almost disappointing off the light.

                        >> 1988 3.1 ITB E30 /// 2002 E46 M3 6MT / 2008 335xi 6MT / 1991 S38B36 E30 (sold)

                        Comment

                        • Adrian_Visser
                          R3VLimited
                          • Jun 2006
                          • 2823

                          #432
                          I never thought anyone would say disappointing and s38 in the same sentance I must admit I am surprised.

                          '89 Alpine S52 with goodies

                          Comment

                          • digger
                            R3V Elite
                            • Nov 2005
                            • 5916

                            #433
                            trapspeed is also slow
                            89 E30 325is Lachs Silber - currently M20B31, M20B33 in the works, stroked to the hilt...

                            new build thread http://www.r3vlimited.com/board/showthread.php?t=317505

                            Comment

                            • skatebline
                              Advanced Member
                              • Sep 2006
                              • 167

                              #434
                              Originally posted by nando
                              single is fine, it's the rebound adjustment you want.

                              Ok. ill go with those and let you guys know how it works out for me. thanks

                              Comment

                              • mega_t2008
                                Member
                                • Nov 2009
                                • 43

                                #435
                                4-door e30 1988. with m50b25tu+m52b25 crank and rods... 75% interior removed, Toyo R888 at 14.7psi with ZF e34 tranny and 3.65 S diff...

                                Best time: without reaction 13.868
                                with reaction 14,308

                                Couldn't connect good reaction with good pull ;)

                                Comment

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