3B vs AAN hose MAF <-> Turbo

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  • pfi
    S2Forum Addict
    • Jun 2016
    • 274
    • Country: Norway

    #1

    3B vs AAN hose MAF <-> Turbo

    in the process of assembling a 91' ACOQ 3B,
    missing the hose (034133357AB) between MAF and turbo but have a AAN hose (034133357S), is it ok to use ?
    If any, what adaptions needed ?
  • K Simmonds
    S2Forum Zealot
    • Dec 2007
    • 7633
    • Country: Wales

    #2
    My RS2 uses a 3B MAF Hose as part of the MTM conversion. Yes they fit you will need to alter the PCV connection a little and move the N75 but that's not hard.
    1990 B3 2.0 80 quattro.
    1992 C4 2.8 Avant quattro
    1994 MTM RS2.
    1998 B5 TDI quattro Sport.
    2000 B5 TQS.

    Comment

    • newsh
      S2Forum Obsessed
      • Aug 2003
      • 16226
      • Country: United Kingdom

      #3
      I think the AAN hose is different length, ABY hose would work. I prefer the 3B hose because the DV blows straight back into the mouth of the turbo, just a bit tighter behind the headlight.

      S2 Coupe 3B Project


      Ur quattro restoration

      S2 Avant

      Boost is the new rock and roll!
      sigpic

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      • K Simmonds
        S2Forum Zealot
        • Dec 2007
        • 7633
        • Country: Wales

        #4
        I didn't realise the AAN hose was a different length, I assumed (wrongly) it was the same as an ABY.

        Wonder if MTM use a 3B hose on their conversions for the reason you mention John? Always puzzled me why they did it.
        1990 B3 2.0 80 quattro.
        1992 C4 2.8 Avant quattro
        1994 MTM RS2.
        1998 B5 TDI quattro Sport.
        2000 B5 TQS.

        Comment

        • newsh
          S2Forum Obsessed
          • Aug 2003
          • 16226
          • Country: United Kingdom

          #5
          Well I did say I “think” cos I thought the airbox was further away..
          Looking at this pic I’m not so sure, ETKA/7Zap would confirm.

          S2 Coupe 3B Project


          Ur quattro restoration

          S2 Avant

          Boost is the new rock and roll!
          sigpic

          Comment

          • newsh
            S2Forum Obsessed
            • Aug 2003
            • 16226
            • Country: United Kingdom

            #6

            S2 Coupe 3B Project


            Ur quattro restoration

            S2 Avant

            Boost is the new rock and roll!
            sigpic

            Comment

            • K Simmonds
              S2Forum Zealot
              • Dec 2007
              • 7633
              • Country: Wales

              #7
              Yep, it's very difficult to be certain from a pic, that hose look's slightly different to both ABY and 3B hose's, but without actually having them side by side it's hard to be sure. Length wise it looks okay though.
              1990 B3 2.0 80 quattro.
              1992 C4 2.8 Avant quattro
              1994 MTM RS2.
              1998 B5 TDI quattro Sport.
              2000 B5 TQS.

              Comment

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