Anyone have vacumn diagrams for aby motor?

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

    #1

    Anyone have vacumn diagrams for aby motor?

    Or some really good pictures of the back side of the motor?

    I will take some pics possibly tomorrow and show everything that I am questioning.

    Thanks
    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?
  • Glen Chamberlain
    S2Forum Addict
    • Aug 2003
    • 375
    • Home: England Current: United Kingdom

    #2
    I may be just thinking out loud but is there not a diagram on the bonnet nr the N/S mirror? I may be thinking of a different Audi but i know one of mine
    had one there!
    Money is everything! Second to Power of course!!! But money breeds power??

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    • S2central.net
      Retired OG Mod
      • Jul 2003
      • 16590
      • Country: Northern Ireland

      #3
      Didn't I post a JPG on this last week or so ?

      I'll dig it out of a different machine and post it again tomorrow. I did one for the 3B and one for the ABY.

      Cheers,

      Paul
      Paul Nugent
      Webmaster http://S2central.net
      Administrator http://S2forum.com

      1994 S2 Coupe ABY - aka Project Lazarus
      2001 A6 allroad 2.5TDi - family tank
      2003 S4 Avant 4.2 V8 - daily burble

      Purveyor of HomeFries and Exclusive agent for Samco hose kits (S2/RS2)

      There are only 10 kinds of people that understand binary - those that do, and those that don't

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

        #4
        In reply to Glen.

        I am working on a conversion from 7a-aby.

        I have very little info.


        I think I have it all figured out thought to be honest.

        But if you don't mind paul it would be appreciated, I never saw the other posts, but I will look for it.

        The lines I have in questions.

        There is one for the AC, but since I elimated it, i am going to just plug it.
        The vavle for AC on a 7a and 3b motor is inside the engine bay, and it's in the dash on the aby models. So I was confused on that thought.

        There is another line that runs to the Diff locks (haven't confirmed but it's a white plastic line I believe)

        There is the boost line. (Green plastic line, I have this figured out, simple enough)

        Once I realized the AC parts were different it got alot simpler.

        Cheers
        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?

        Comment

        • S2central.net
          Retired OG Mod
          • Jul 2003
          • 16590
          • Country: Northern Ireland

          #5
          Here's the vacuum tree diagram for ABY -


          CHeers,

          Paul
          Attached Files
          Paul Nugent
          Webmaster http://S2central.net
          Administrator http://S2forum.com

          1994 S2 Coupe ABY - aka Project Lazarus
          2001 A6 allroad 2.5TDi - family tank
          2003 S4 Avant 4.2 V8 - daily burble

          Purveyor of HomeFries and Exclusive agent for Samco hose kits (S2/RS2)

          There are only 10 kinds of people that understand binary - those that do, and those that don't

          Comment

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

            #6
            Sweetness!

            Thanks
            paul

            You Rock
            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?

            Comment

            • BRY
              S2Forum Possessed
              • Nov 2004
              • 3755
              • Home: United Nations Current: Vietnam

              #7
              So, is it the same connections for a 3B?
              Kingdoms are run by Kings, Dictatorships are run by Dictators.
              England must be a Country. :mischeif:

              Comment

              • jon_91_s2
                S2Forum Addict
                • May 2004
                • 253
                • Home: England

                #8
                Originally posted by BRY
                So, is it the same connections for a 3B?
                3B is not the same. From what I can work out from the diagram it is similar, but one immediate difference is the 3B has three hoses in that area. One goes to the bottom of the DV.

                Cheers
                Jon

                91 3b S2

                Now Sold

                Comment

                • mcandmar
                  S2Forum Zealot
                  • Apr 2004
                  • 5118
                  • Country: Ireland

                  #9
                  Sweet In the process of planning my 7A -> ABY conversion, could'nt for the life of me figure out what that white plastic bit was for, its a moisture trap then

                  Any diagrams for the carbon canister and check valves? 7A has two valves where as the ABY seems to have one, i also need to know where it is plumbed in
                  91CQ20v - Gone to a new home
                  93UR-S4 - The Magic Carpet
                  94S2Bus - The Emerald Express

                  Comment

                  • S2central.net
                    Retired OG Mod
                    • Jul 2003
                    • 16590
                    • Country: Northern Ireland

                    #10
                    The 3B vacuum is very similar of course - but not identical to the ABY. Most notable difference is that the control pipe for the TBV comes from rear of the IM - with a hilariously long run of pipe over the EM before it finally gets down to the TBV.

                    Will post the 3B diagram (two years old now) later today...

                    As for carbon canisters - I'll cover that separately. Could probably justify an update on S2central.net for this info - then it will be SO much easier to find again.

                    From memory of the EVAP system, the carbon canister has two connections - one accepting fumes IN from the tank, and another taking them OUT via the N80 solenoid which allows them into the IM on vacuum.

                    Duty cycle of N80 is controlled by ECU......


                    Paul
                    Paul Nugent
                    Webmaster http://S2central.net
                    Administrator http://S2forum.com

                    1994 S2 Coupe ABY - aka Project Lazarus
                    2001 A6 allroad 2.5TDi - family tank
                    2003 S4 Avant 4.2 V8 - daily burble

                    Purveyor of HomeFries and Exclusive agent for Samco hose kits (S2/RS2)

                    There are only 10 kinds of people that understand binary - those that do, and those that don't

                    Comment

                    • GTQ
                      S2Forum Tinkerer
                      • Jul 2008
                      • 5
                      • Country: United States

                      #11
                      I'm doing similar 7A to ABY conversion and have yet to see a proper diagram of the vacuum routing as it pertains to the Evaporative Purge Valve and related Crankcase Ventilation. I can mod for catch can later once I know what the stock system looks like.

                      A picture of this would be great - the theoretical diagrams just don't show how the factory hookups are made. I'm trying to make this as factory as possible, then deviate if need be.

                      Ben

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