cam question

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  • A1quattro
    S2Forum Maniac
    • Jul 2006
    • 789
    • Country: United Kingdom

    #1

    cam question

    may be a daft question ? i need cams from a 7a or early s2 with the the cog on cam shaft to drive a distributer . i have a pair of aby cams [no cog] can a cog be purchased and fitted to the aby cam shaft to drive dizzy the cam seems to have a extra long shaft on end which maybe cog slides onto ?
  • Error404
    Super Moderator
    • Mar 2007
    • 19789
    • Country: United Kingdom

    #2
    No the gear is cut into the cam AFAIK. You need a 3B inlet cam to replace the ABY one.
    Panthero Coupé quattro 20vt
    Indigo ABY coupé
    Imola B6 S4 Avant

    Comment

    • K Simmonds
      S2Forum Zealot
      • Dec 2007
      • 7627
      • Country: Wales

      #3
      I'm pretty sure it's heat shrunk onto the shaft, my NM cams that I sold on to an ABY owner had had the gear removed and I know they were the real deal as I spent half a day measuring them, the part numbers are a little ambiguous.
      1990 B3 2.0 80 quattro.
      1992 C4 2.8 Avant quattro
      1994 MTM RS2.
      1998 B5 TDI quattro Sport.
      2000 B5 TQS.

      Comment

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

        #4
        Originally posted by A1quattro
        may be a daft question ? i need cams from a 7a or early s2 with the the cog on cam shaft to drive a distributer . i have a pair of aby cams [no cog] can a cog be purchased and fitted to the aby cam shaft to drive dizzy the cam seems to have a extra long shaft on end which maybe cog slides onto ?
        Be aware that the gears on the end of the intake cams are different. Here is a photo showing the 3B gears on the left and an early AAN cam on the right.



        Photo courtesy of Jari Allto.
        RS2'd 93 UrS4 5 spd sedan
        94 UrS4 V8 6 spd manual avant

        Comment

        • Laaf
          S2Forum Addict
          • Oct 2010
          • 275
          • Country: Finland

          #5
          I have a cog pulled off a 7A intake cam somewhere in the garage. Its just press fitted onto the cam

          Comment

          • Jamo
            Retired OG Mod
            • Mar 2004
            • 21750
            • Country: United Kingdom

            #6
            Originally posted by Error404
            No the gear is cut into the cam AFAIK. You need a 3B inlet cam to replace the ABY one.
            It isn't cut into the cam. They are removable as it's an interference fit.

            If you run NM cams with a dizzy you need to take the gear off it and replace it with a 3B / 7A one as the pattern on the gear is different.

            Comment

            • Jamo
              Retired OG Mod
              • Mar 2004
              • 21750
              • Country: United Kingdom

              #7
              Originally posted by A1quattro
              may be a daft question ? i need cams from a 7a or early s2 with the the cog on cam shaft to drive a distributer . i have a pair of aby cams [no cog] can a cog be purchased and fitted to the aby cam shaft to drive dizzy the cam seems to have a extra long shaft on end which maybe cog slides onto ?
              The thing is why do you want to use an ABY exhaust cam with a 3B? they are the same duration etc the only physical difference is the gear between the 3B and ABY camshafts

              Comment

              • A1quattro
                S2Forum Maniac
                • Jul 2006
                • 789
                • Country: United Kingdom

                #8
                the only reason i asked was that i have 2 pairs of spare aby cams , i am haveing motec fitted by dialynx , keith prefers the dizzy set up rather than aby coil packs ect so rather than buying 7a cams wounderd if the cog just slides on [which it does] . when the car is run in i will buy proper rally cams , but at present a need every penny to pay for motec, and alloy engine build

                Comment

                • Jamo
                  Retired OG Mod
                  • Mar 2004
                  • 21750
                  • Country: United Kingdom

                  #9
                  Originally posted by A1quattro
                  the only reason i asked was that i have 2 pairs of spare aby cams , i am haveing motec fitted by dialynx , keith prefers the dizzy set up rather than aby coil packs ect so rather than buying 7a cams wounderd if the cog just slides on [which it does] . when the car is run in i will buy proper rally cams , but at present a need every penny to pay for motec, and alloy engine build
                  OK that makes more sense now.

                  I'd speak to VRS and Dave Rowe who tunes motec on I5's as i'm sure you don't have to do this.

                  Beyond that I don't think I want to comment on why he wants you to spend so much on the a hi-tech ecu but take your car to the stone age with a dizzy

                  Comment

                  • A1quattro
                    S2Forum Maniac
                    • Jul 2006
                    • 789
                    • Country: United Kingdom

                    #10
                    i did think the same thing .. seems like going backwards, but kieth just prefers that set up, he is not making any extra money out of it either way dizzy or non dizzy . he has done alot of cars this way, with one high energy coil for all 5 cyl fitted on bulk head, as i needed to change /uprate my cams anyhow the only extra cost will be buying the dizzy and vernier pulley , also with a 7a cam cover the dizzy set up looks good [sport spec;ish] the motec he has got for me is the m600 , i want to run launch,anti lag,fly by wire, which can be done on m600 he told me m800 not req

                    Comment

                    • A1quattro
                      S2Forum Maniac
                      • Jul 2006
                      • 789
                      • Country: United Kingdom

                      #11
                      before i went to dialynx i tried to get hold of dave rowe 3 or 4 times , he is a very buisy chap alway seems to be out of the country . they all know each other and both have done work on keith edwards red hill climb s1 rep

                      Comment

                      • will20v
                        S2Forum Addict
                        • May 2007
                        • 391
                        • Country: United Kingdom

                        #12
                        Running the dizzy will be fine for what you want to do buddy. Keith knows his stuff trust his abilaty and experiance and you will be fine.

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