3b Alternator alternatives? VR6 120amp?

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  • The Chef
    S2Forum Enthusiast
    • Jan 2007
    • 129
    • Home: United Kingdom Current: England

    #1

    3b Alternator alternatives? VR6 120amp?

    Hi all,
    I've searched through but cannot find what I'm after which is would I be able to use an alternator from a VR6 (120amp) on my 3b engine?
    The mounting is about the same, I may need to swap over the pulley to fit the belt and the part number is the same except for the last 3 digits....
    Anyone know if this is a viable option?
    Asking as I've not purchased the alternator from my friend yet or gone to view my UR yet..
    Thanks in advance
  • Wizard-of-OD
    S2Forum Maniac
    • Jan 2004
    • 926
    • Home: Syria Current: Canada

    #2
    Originally posted by The Chef
    The mounting is about the same
    Not even close. You will need to make brackets to use the AAA VR6 120A unit onto the 3B/7A/NM alternator bracket + swing arm.
    Issam N. Abed
    iABED Industries
    iABED Email | Facebook
    The build thread

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    • Error404
      Super Moderator
      • Mar 2007
      • 19789
      • Country: United Kingdom

      #3
      Best bet is a ABY alternator with a 3B pulley on it. I think you'll struggle to drive a 120A off a v-belt though.
      Panthero Coupé quattro 20vt
      Indigo ABY coupé
      Imola B6 S4 Avant

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      • AndyP
        S2Forum Zealot
        • Feb 2004
        • 6049
        • Country: England

        #4
        Originally posted by Error404
        Best bet is a ABY alternator with a 3B pulley on it. I think you'll struggle to drive a 120A off a v-belt though.
        No problems so far
        sigpic
        1991 Audi S2 3B - 2.5 Stroker engine
        1997 A6 2.5TDi quattro avant - C4
        1976 RD250E / 350LC cafe racer

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        • jsws3
          S2Forum Extremist
          • Apr 2012
          • 1174
          • Country: United Kingdom

          #5
          Or send your alternator off to get upgraded as I did and now it's around 130amp

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          • The Chef
            S2Forum Enthusiast
            • Jan 2007
            • 129
            • Home: United Kingdom Current: England

            #6
            Thanks guys. I'm just going to send mine off for recon.. Then mot the sob!

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            • as2nerka
              S2Forum Enthusiast
              • Mar 2009
              • 149
              • Home: Sweden

              #7
              Vw pasat b7 180a alternator

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