86mm Bore, what headgasket?

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  • craz azn
    Mod Crazy
    • Jul 2004
    • 745

    #1

    86mm Bore, what headgasket?

    So hypothetically, you build a 86mm, or even bigger M20. What are the options for headgaskets? Because I am rather skeptical about using a stock gasket meant for 84mm on an 86+....

    Discuss please.

    Rippin' Proper | Youtube | Vimeo |
  • brody
    Grease Monkey
    • Jul 2009
    • 334

    #2
    Use a cometic mls and order it for the desired bore size. Easy.

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    • nando
      Moderator
      • Nov 2003
      • 34827

      #3
      nah. stock is fine for 86mm. MM has been doing it for what, 20 years?

      I think they have something special for 87mm, but those were race only motors and they don't build them anymore..
      Build thread

      Bimmerlabs

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      • craz azn
        Mod Crazy
        • Jul 2004
        • 745

        #4
        ^ MM bored an M20 out to 87?!

        Rippin' Proper | Youtube | Vimeo |

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        • nando
          Moderator
          • Nov 2003
          • 34827

          #5
          yeah, all the time.
          Build thread

          Bimmerlabs

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