Timing Marks + issues

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  • andyg plym
    S2Forum Freak
    • Nov 2006
    • 4646
    • Country: England

    #1

    Timing Marks + issues

    Evening all,so I have a couple of questions..

    firstly have I timed this engine up correctly?



    check out the marks on the 7a flywheel,there is the single line then an 'O',if you imagine looking through the gearbox inspection hole it would surely be the 'O' you would see,not the usual line.

    Second question,I removed the cambelt the other day,then removed the clutch after,with the clutch I ended up undoing it and in turn turned the flywheel around.

    Today I completely forgot about this and proceeded to do the cambelt up,I lined up the cam pulley as in the first picture as it was from when I removed it.As I had forgotten I had moved the flywheel (and in turn the crank pulley etc) I assumed it was in the same position etc...

    Cutting this long,boring story short I turned the engine by hand one complete revolution,it seemed normal,you could hear the hiss from the pistons moving etc,I felt no unusual resistance...OH FEK I thought as I checked the bottom pulley notch!
    the bottom pulley was almost a qurter of a turn out.
    I immediatly undid the tensioner and the belt and using a large spanner rotated the cam around to the timing mark (after lining up the botttom pulley) and reattched the belt and retensioned up.I then by hand turned the engine over 3 complete revolutions and again seemed fine.

    So would I have done any damage?If the valves and pistons collided wouldn't the engine be solid and unable to turn over?
    Attached Files
  • Smiley
    S2Forum Addict
    • Jun 2005
    • 329
    • Country: Germany

    #2
    if you're not shure wether the crank is at correct position, you can pull out the spark plug from 1st cylinder and check with a long tip or screwdriver if its at top position whilst moving the crank a little bit and watching the screwdriver move millimeters up'n down..

    ..cause it's possible to screw up the crank pulley 90° out of timing, so the front mark will show wrong in such a case.

    From flywheel side i can' image without mounted bell housing
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    • andyg plym
      S2Forum Freak
      • Nov 2006
      • 4646
      • Country: England

      #3
      Thanks mate

      Im certain its all timed correctly now looking at all the marks,I just want to know if its possible I have done any damage

      Comment

      • DJones
        S2Forum Fiend
        • Jun 2005
        • 2020
        • Country: United Kingdom

        #4
        Originally posted by andyg plym
        Thanks mate

        Im certain its all timed correctly now looking at all the marks,I just want to know if its possible I have done any damage
        You wouldn't have done any damage by hand...

        Comment

        • andyg plym
          S2Forum Freak
          • Nov 2006
          • 4646
          • Country: England

          #5
          Originally posted by DJones
          You wouldn't have done any damage by hand...
          i suspected this but wanted to be sure.

          i wonder how far out i would of had to of got it for the valves/pistons to collide

          Comment

          • PeterS
            S2Forum Addict
            • Jul 2003
            • 423
            • Country: United States

            #6
            Andy:
            You should be good.
            Peter S

            1990 ErsatzS2 - track toy
            1991 Coupe Quattro
            1991 Coupe Quattro
            1995 S6 Sedan
            1995 S6 Wagon

            Comment

            • Pirvu Eugen
              S2Forum Extremist
              • Apr 2007
              • 1978
              • Country: Romania

              #7
              Look here also....is interesting....butyour marks are ok now. http://www.s2forum.com/forum/showthread.php?t=44428

              Comment

              • andyg plym
                S2Forum Freak
                • Nov 2006
                • 4646
                • Country: England

                #8
                Originally posted by Pirvu Eugen
                Look here also....is interesting....butyour marks are ok now. http://www.s2forum.com/forum/showthread.php?t=44428
                thanks for the link mate

                yes it is odd,but then i suppose with the s2 gearbox it wasnt designed for it,but glad i stayed with the single mass flywheel now

                Comment

                • s2_wot
                  S2Forum Fiend
                  • Aug 2006
                  • 2178

                  #9
                  Originally posted by Smiley
                  if you're not shure wether the crank is at correct position, you can pull out the spark plug from 1st cylinder and check with a long tip or screwdriver if its at top position whilst moving the crank a little bit and watching the screwdriver move millimeters up'n down..

                  ..cause it's possible to screw up the crank pulley 90° out of timing, so the front mark will show wrong in such a case.

                  From flywheel side i can' image without mounted bell housing
                  That's a 5 minute DIY check that anybody could do if they were concerned about the engine being timed correctly. Thanks for posting that idea.
                  Shane

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