Different Exhaust Header

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  • AndrewBird
    The Mad Scientist
    • Oct 2003
    • 11892

    #1

    Different Exhaust Header

    One problem I ran into while fitting the M42 in my MG is the stock header sticks out from the block too far and hits the frame rails. So I either need to make a custom header or find another that works. What are my options for an aftermarket one? M50's use the same bolt pattern on the flange, correct? I was thinking I could maybe just modify one of those similar to how turbo guys modify turbo manifolds.
  • tjts1
    E30 Mastermind
    • May 2007
    • 1851

    #2
    RHD M42s used a more compact header to make room for the steering gear.

    Comment

    • Dj Buttchug
      R3V OG
      • Jun 2010
      • 7633

      #3
      ^ thats what you need rite thurr

      Turbo M42 Build Thread :Here
      Ig:ryno_pzk
      I like the tuna here.
      Originally posted by lambo
      Buttchug. The official poster child of r3v.

      Comment

      • Danny
        Moderator
        • Feb 2008
        • 14216

        #4
        Originally posted by NitroRustlerDriver
        One problem I ran into while fitting the M42 in my MG is the stock header sticks out from the block too far and hits the frame rails. So I either need to make a custom header or find another that works. What are my options for an aftermarket one? M50's use the same bolt pattern on the flange, correct? I was thinking I could maybe just modify one of those similar to how turbo guys modify turbo manifolds.
        You could try this with a 100 dollar ebay turbo manifold. cut off the two cylinders and use the turbo flange to attach it to the rest of your exhaust. Would be fairly easy. Might not flow the best, but would be easy.

        Comment

        • AndrewBird
          The Mad Scientist
          • Oct 2003
          • 11892

          #5
          Anyone with a RHD header want to measure it for me? I need to know how far it sticks out from the flange.

          Comment

          • KenC
            King of Kegstands
            • Oct 2003
            • 14396

            #6
            Originally posted by NitroRustlerDriver
            Anyone with a RHD header want to measure it for me? I need to know how far it sticks out from the flange.
            Try posting the question on e30zone.co.uk

            Everyone on there has a RHD e30... you're likely to get a quicker response
            Originally posted by Gruelius
            and i do not know what bugg brakes are.

            Comment

            • SpoolnDaapex
              Advanced Member
              • Jan 2010
              • 150

              #7
              I would figure out how to properly weld cast iron and modify the stock one.
              M42: Because 110 feels like 140 :finger:

              Comment

              • KenC
                King of Kegstands
                • Oct 2003
                • 14396

                #8
                Originally posted by SpoolnDaapex
                I would figure out how to properly weld cast iron and modify the stock one.
                Stock one is steel.
                Originally posted by Gruelius
                and i do not know what bugg brakes are.

                Comment

                • SpoolnDaapex
                  Advanced Member
                  • Jan 2010
                  • 150

                  #9
                  Oh nice, even easier.
                  M42: Because 110 feels like 140 :finger:

                  Comment

                  • 3bvert
                    E30 Enthusiast
                    • Jun 2009
                    • 1032

                    #10
                    what model mg
                    if that ( stock rhd) does not work, its gonna be custom, without a dyno youll loose power
                    looking at the pics
                    our "LHD" cars have a great system

                    Comment

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