thread pitch - intake, exhaust and timing cover?

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  • SA E30
    E30 Fanatic
    • Feb 2004
    • 1248

    #1

    thread pitch - intake, exhaust and timing cover?

    Hey guys in a pickle. I can't find what the thread pitch is on the above mentioned studs and bolts. Does anyone know? I don't have any nuts and bolts handy from the engine and I want to order the hardware.

    Oh, also anyonw know the pitch on the front crank bolt too?
  • Jaxx_
    E30 Mastermind
    • Dec 2009
    • 1880

    #2
    crank bolt is M20X1.5. It should be a 30mm nut.

    I don't know the thread pitch for the other ones.
    '84 318i M10B18 147- Safari Beige
    NA: 93whp/90ftlbs, MS2E w/ LC, 2-Step
    Turbo: 221whp/214ftlbs, MS3x flex @ 17psi

    Comment

    • SA E30
      E30 Fanatic
      • Feb 2004
      • 1248

      #3
      On bmwfans/realoem it says the crank nut is m22.

      It also gives the all the lengths and bolt diameters but sadly not the thread pitch.

      Comment

      • Jaxx_
        E30 Mastermind
        • Dec 2009
        • 1880

        #4
        Originally posted by SA E30
        On bmwfans/realoem it says the crank nut is m22.

        It also gives the all the lengths and bolt diameters but sadly not the thread pitch.
        well my m10 when i converted the crank pulley wheel to trigger fire with MS I used a m20x1.5 locking nut from mcmaster carr. I'm not really sure where you found M22 for that nut?
        '84 318i M10B18 147- Safari Beige
        NA: 93whp/90ftlbs, MS2E w/ LC, 2-Step
        Turbo: 221whp/214ftlbs, MS3x flex @ 17psi

        Comment

        • SA E30
          E30 Fanatic
          • Feb 2004
          • 1248

          #5
          Where did you get a trigger wheel? I was going to go with batch injection just because I couldn't find a trigger wheel.

          I read about it on realoem. The crank nut that is.

          Comment

          • Jaxx_
            E30 Mastermind
            • Dec 2009
            • 1880

            #6
            Originally posted by SA E30
            Where did you get a trigger wheel? I was going to go with batch injection just because I couldn't find a trigger wheel.

            I read about it on realoem. The crank nut that is.
            I got one from Tom at 02again.com. I'm sure he'll hate me sending you there because I had a few issues with it but he was very very helpful. I think I was one of the first E30 fitment. It all worked out okay, the main problem being the crank nut to wall clearance (a very thin walled 30mm socket needed to be found) forced me to get 2 other 30mm sockets.

            Tom has a lot of sweet MS stuff.
            '84 318i M10B18 147- Safari Beige
            NA: 93whp/90ftlbs, MS2E w/ LC, 2-Step
            Turbo: 221whp/214ftlbs, MS3x flex @ 17psi

            Comment

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