what do i do now...

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  • dougie30
    E30 Mastermind
    • Apr 2012
    • 1708

    #31
    Originally posted by LJ851
    Heres what i would do if i had no money:

    Install the subframe, torque the other three subframe bolts to spec and put red loctite on the new replacement bolt (and damaged hole) and torque to spec. If it holds you are done and if it strips go to plan B of a thread insert.
    I feel like if I do the jb weld, tap the whole, and apply the red lock tight I will be good.

    Thanks for the help guys, this whole process was a pain in the ass!!

    I will give more updates when i put the sub frame back in.
    M30 is God's motor.....but Jesus drives an M60'd car -slammin.e28

    Comment

    • AndrewBird
      The Mad Scientist
      • Oct 2003
      • 11892

      #32
      Don't bother with jb weld, it will do nothing. Chase the threads with a tap and install the bolt. If it doesn't strip when tightening it, you should be fine.

      Comment

      • dougie30
        E30 Mastermind
        • Apr 2012
        • 1708

        #33
        Got the subframe back in.

        I decided the quickest easiest cheapest and most correct way was a heli-coil. So I drilled it out and put the coil in with some red lock tight and torqued it down and it feel great. I honestly thought I was screwed...but every thing worked out good.

        I only have a pic of before the threads where drilled out, because my phone died but you can see where I accidentally drilled out the threads on the right.
        Attached Files
        M30 is God's motor.....but Jesus drives an M60'd car -slammin.e28

        Comment

        • Exodus_2pt0
          R3V Elite
          • Dec 2011
          • 5943

          #34
          Helicoil is pretty strong.

          I had a tow hook mocked onto a 1/8 inch steel tree pushing bumper on one of my old trucks using helicoil to thread the bolts into. Well the truck was towed and apparently the truck driver used my hook to pull it all the way onto the flat bed.

          No nuts on the back, just helicoil and some sheet steel... But it was 2 perfect holes, not offset.

          I would be worried about what you have there. That gap from the elongated hole is going to be the weak link, where a good pothole might just knock it free. Would not drive.
          Last edited by Exodus_2pt0; 02-24-2013, 06:28 AM.
          No E30 Club
          Originally posted by MrBurgundy
          Anyways, mustangs are gay and mini vans are faster than your car, you just have to deal with that.

          Comment

          • dougie30
            E30 Mastermind
            • Apr 2012
            • 1708

            #35
            Well when I drilled out the threads the hole whats pretty even on all sides. The part I accidentally drilled was just the threads, no further into the metal. I think it will be fine it held the torque with no problems and the other three bolts are fine so I think it will hold.
            M30 is God's motor.....but Jesus drives an M60'd car -slammin.e28

            Comment

            • AndrewBird
              The Mad Scientist
              • Oct 2003
              • 11892

              #36
              FYI, helicoils are MIL-spec in aircraft applications. Lots of threaded holes in aircraft parts require threaded inserts to be used. We put them i all the time at work (I'm a machinist). People who say that helicoils suck, don't know what they are talking about.

              Comment

              • dougie30
                E30 Mastermind
                • Apr 2012
                • 1708

                #37
                Originally posted by NitroRustlerDriver
                FYI, helicoils are MIL-spec in aircraft applications. Lots of threaded holes in aircraft parts require threaded inserts to be used. We put them i all the time at work (I'm a machinist). People who say that helicoils suck, don't know what they are talking about.
                Thanks dude this makes me feel better about having it.
                M30 is God's motor.....but Jesus drives an M60'd car -slammin.e28

                Comment

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