7A to 3B head

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  • WabTheKing
    S2Forum Fiend
    • May 2004
    • 2567
    • Country: United Kingdom

    #1

    7A to 3B head

    only differance i can see is the water manifold,

    this looks like it could be machine fairly easyly

    anyone done this?
  • caterpillar
    S2Forum Fiend
    • Jun 2004
    • 2480

    #2
    same casting nr....it will fit,and easy to machine the water manifoil.....

    Comment

    • PeterS
      S2Forum Addict
      • Jul 2003
      • 423
      • Country: United States

      #3
      Gents:

      This is exactly what Javad did on his 80tq.

      -Peter
      Peter S

      1990 ErsatzS2 - track toy
      1991 Coupe Quattro
      1991 Coupe Quattro
      1995 S6 Sedan
      1995 S6 Wagon

      Comment

      • ~Delta
        S2Forum Maniac
        • Apr 2005
        • 797

        #4
        ...3B cylinder head also has extra exhaust manifold studs.
        Never show a fool a half built house.
        Never underestimate the power of stupid people in large groups.

        Life is like a **** sandwich
        The more bread you have, the less **** you eat

        Comment

        • spink
          S2Forum Freak
          • Jul 2003
          • 4382
          • Country: England

          #5
          I was stripping a 7A head earlier and could only find the intake side to be different, exhaust side is identical.I heard someone say that 7A's dont have sodium valves but i cant be sure.You can see the difference here 3b is the clean one.
          Attached Files
          Last edited by spink; 25 April 2005, 22:19.

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          • 4WheelDrifter
            S2Forum Zealot
            • Oct 2004
            • 5773
            • Country: Devon

            #6
            AFAIK 7As DO have sodium filled exhaust valves.
            SS

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            • pastures16
              S2Forum Fiend
              • Nov 2004
              • 2058
              • Country: United Kingdom

              #7
              ill 2nd that hows your hangover 4wd
              94 s2 avant
              aoc member 1116

              Comment

              • Josh-stateside
                S2Forum Maniac
                • Jul 2003
                • 741
                • Country: United States

                #8
                On the matter of exhaust manifold studs. The 7a engines with cast exhaust manifolds came with as many studs as the 20vT heads. The 7a engines with tubular heads came with less.

                ttyl
                Josh
                I chose not to choose life: I chose something else. And the reasons? There are no reasons. Who need reasons when you've got quattro?

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