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  • Engine Noise

    My 1981SH had the smootheset running engine ever for years then I shimmed the valves(a procedure I have done annually for years) and it picked up a loud ticking noise after it has heated up.Cold it is like it always was,after running for about 10 minutes it starts to tick.My auto mechanic thought it to be a pin hole in the inner lining of the original double walled exhaust pipes.However the tick seems to be coming from #4 exhaust.I am certain it is in the valve.Any ideas on how I queered it while shimming and ideas on the fix? ER Carpenter

  • #2
    To add to my post about engine noise:-Correction :the tick is coming from #4 intake.LOL It's getting late.
    ER Carpenter

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    • #3
      Originally posted by eleven_special
      To add to my post about engine noise:-Correction :the tick is coming from #4 intake.LOL It's getting late.
      ER Carpenter
      You do know about the suppliment pages for the later bikes at the end of the Clymers, right? 80 and 81s are supposed to have tighter shim clearances than 78 and 79s. (But I doubt that is the problem).
      Skids (Sid Hansen)

      Down to one 1978 E. Stock air box with K&N filter, 81H pipes and carbs, 8500 feet elevation.

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      • #4
        Also, losing spark from the plug wire to ground can sound like ticking.
        Skids (Sid Hansen)

        Down to one 1978 E. Stock air box with K&N filter, 81H pipes and carbs, 8500 feet elevation.

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