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GS450E Engine noise click/slap diagnostics

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    GS450E Engine noise click/slap diagnostics

    What is causing this noise ?


    1981 GS450E ,9000miles on it

    My initial thought was loose cam chain so I took the valve head cover off:
    - I check valve clearances & re-shimmed now all valve clearances are within spec(.03-.08mm) except for my RIGHT LOBE EX SHIM which is at (.102mm) which is fine .

    - i removed the cam chain tensioner & reset the tensioner then reinstalled back onto engine block at TDC. Backed out the stop screw 1/4 turn then locked nut, confirmed tensioner is functional .

    - cam chain timing is perfect and there are 18pins between the 3^ and ^2 arrows.

    - the cam chain is is good condition not too worn or too much play. The guides are all in good shape

    so I am stumped what is this noise and how do I fix it? Thank you. This is the 5th vintage bike I've restored and I'm stumped .
    Last edited by Guest; 04-23-2017, 10:12 AM. Reason: Title change

    #2
    Hard to tell from that video. Doesn't sound too bad to me.
    Ed

    To measure is to know.

    Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

    Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

    Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

    KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

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      #3
      I can hear the higher pitch tapping noise that you're probably worried about but doesn't sound unusual.
      Rob
      1983 1100ES, 98' ST1100, 02' DR-Z400E and a few other 'bits and pieces'
      Are you on the GSR Google Earth Map yet? http://www.thegsresources.com/_forum...d.php?t=170533

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        #4
        Thanks guys, yeah its almost a light slap sound but It could just the way the engine is supposed to sound.

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          #5
          I can take another video, how would you suggest I video differently so you can hear better?

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