Cam timing confirmation

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  • 20Vcqdriver
    S2Forum Maniac
    • Jun 2007
    • 829
    • Country: United Kingdom

    #1

    Cam timing confirmation

    OK Just after confirmation that this is the correct position for the cams. If I move over 1 tooth it sits slightly higher (by 1/2 tooth) but which position is correct this one is slightly below the head top surface the other position slightly above it.

    1986 Coupe q - 2281cc 3B, chargecooler, 2.75" exh & downpipe, ported head, water injection, CGR box, modified MD357 turbo, 440cc injectors, high power coil.
    2004 A4 2.5TDi convertible, re-mapped to 180bhp
    2011 A5 sportback 3TDi-Backbox delete, remap
  • mcandmar
    S2Forum Zealot
    • Apr 2004
    • 5118
    • Country: Ireland

    #2
    Correct, those marks are for timing the cams in relation to each other, they have nothing to do with the timing belt setup.
    91CQ20v - Gone to a new home
    93UR-S4 - The Magic Carpet
    94S2Bus - The Emerald Express

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    • 20Vcqdriver
      S2Forum Maniac
      • Jun 2007
      • 829
      • Country: United Kingdom

      #3
      Originally posted by mcandmar
      Correct, those marks are for timing the cams in relation to each other, they have nothing to do with the timing belt setup.
      Yep sorry, I meant if I move the chain over 1 tooth. If this is correct thats one less concern but doesn't help sussing the slow spool. Thanks
      1986 Coupe q - 2281cc 3B, chargecooler, 2.75" exh & downpipe, ported head, water injection, CGR box, modified MD357 turbo, 440cc injectors, high power coil.
      2004 A4 2.5TDi convertible, re-mapped to 180bhp
      2011 A5 sportback 3TDi-Backbox delete, remap

      Comment

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

        #4
        Basically if you have both marks closest to each other, then draw a line between both marks it should be parallel to the head if that makes sense. As per above pic..
        91CQ20v - Gone to a new home
        93UR-S4 - The Magic Carpet
        94S2Bus - The Emerald Express

        Comment

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

          #5
          P.S. Here is a pic from my 7A that Urs4boy has kindly added in visual aids. Basically the red line is parallel with the head, and at the center line of the cams.

          Note it dosent line up exactly in the correct position as the cam pulley was moved ever so slightly before taking the pic, but you get the idea.

          91CQ20v - Gone to a new home
          93UR-S4 - The Magic Carpet
          94S2Bus - The Emerald Express

          Comment

          • UrS4boy
            S2Forum Obsessed
            • Feb 2006
            • 11859
            • Country: Canada

            #6
            Consolidated Cam and Crank Pulley and Flywheel Timing Mark photos and diagrams

            Originally posted by mcandmar
            P.S. Here is a pic from my 7A that Urs4boy has kindly added in visual aids. Basically the red line is parallel with the head, and at the center line of the cams.
            So that is where I got that photo!! Thanks. I'll give you credit:

            Consolidated Cam and Crank Pulley and Flywheel Timing Mark photos and diagrams
            RS2'd 93 UrS4 5 spd sedan
            94 UrS4 V8 6 spd manual avant

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