reuse flywheel bolts?

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  • jakeb
    E30 Mastermind
    • Feb 2004
    • 1909

    #1

    reuse flywheel bolts?

    I am ordering some parts for my m50 to s52 switch and was wondering if i should get new flywheel and pressure plate bolts. I had replaced them when i put the m50 in but can i just reuse them?
    www.classicdaily.net
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  • rThor432
    No R3VLimiter
    • Feb 2007
    • 3907

    #2
    You can reuse the bolts, but ideally you want to replace them because of the thread sealant that comes on them when they are new. You can reuse the old bolts with green or blue Loctite.

    Comment

    • jrdeamicis
      E30 Modder
      • Nov 2008
      • 956

      #3
      No, they stretch. You can NOT re-use them.
      Past Car : E30 S50 6 Speed 5 Lug 3.73
      Current : Z3 S50 OBD2 (Smog Legal) 6 Speed BBS RN Dual Ear Diff
      ___________________________________________
      BNB Designs
      Engine Swaps, Fabrication, Innovation, General Repair
      Richmond CA
      Julian 848-248-8029

      Comment

      • jrdeamicis
        E30 Modder
        • Nov 2008
        • 956

        #4
        Same with main bolts, head bolts, and a few other ones.
        Past Car : E30 S50 6 Speed 5 Lug 3.73
        Current : Z3 S50 OBD2 (Smog Legal) 6 Speed BBS RN Dual Ear Diff
        ___________________________________________
        BNB Designs
        Engine Swaps, Fabrication, Innovation, General Repair
        Richmond CA
        Julian 848-248-8029

        Comment

        • learningcurve86
          Mod Crazy
          • May 2008
          • 715

          #5
          those things are on there so tight... i think that reusing them would be a really bad idea. they can't be that much money.. are they?
          Greg

          Comment

          • jrdeamicis
            E30 Modder
            • Nov 2008
            • 956

            #6
            Originally posted by learningcurve86
            those things are on there so tight... i think that reusing them would be a really bad idea. they can't be that much money.. are they?
            They are not that bad. For being THAT important. They are cheap.
            Past Car : E30 S50 6 Speed 5 Lug 3.73
            Current : Z3 S50 OBD2 (Smog Legal) 6 Speed BBS RN Dual Ear Diff
            ___________________________________________
            BNB Designs
            Engine Swaps, Fabrication, Innovation, General Repair
            Richmond CA
            Julian 848-248-8029

            Comment

            • learningcurve86
              Mod Crazy
              • May 2008
              • 715

              #7
              yeah, that's what i figured. I haven't ever done a flywheel, but i pulled one off of my old motor two days ago... 24'' pipe on my wrench and it still took my whole body to move them.
              Greg

              Comment

              • jrdeamicis
                E30 Modder
                • Nov 2008
                • 956

                #8
                They are torqued in the 80 range if I remember correctly. There is a lot of heat and stress down there.
                Past Car : E30 S50 6 Speed 5 Lug 3.73
                Current : Z3 S50 OBD2 (Smog Legal) 6 Speed BBS RN Dual Ear Diff
                ___________________________________________
                BNB Designs
                Engine Swaps, Fabrication, Innovation, General Repair
                Richmond CA
                Julian 848-248-8029

                Comment

                • MR E30 325is
                  No R3VLimiter
                  • Dec 2008
                  • 3299

                  #9
                  If I was using the Getrag 260 and clutch + flywheel with my S50 swap, I would use the S50 flywheel bolts correct?
                  My previous build (currently E30-less)
                  http://www.r3vlimited.com/board/showthread.php?t=170390

                  A 2016 Toyota Tacoma TRD 4x4 Offroad in Inferno is my newest obsession

                  Comment

                  • gobuffs
                    E30 Addict
                    • Dec 2004
                    • 513

                    #10
                    They can be reused, but they are cheap enough to replace them. The only thing in a motor that under no circumstances I would reuse are rod bolts.

                    And they TTY (torque to yield) type bolts. TTY bolt have a specified angle to torque to not a torque value....Therefore they can be reused.

                    Comment

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