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Thread: Is this top dead centre?

  1. #1
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    Default Is this top dead centre?



    I want to fix my camchain tensioner and check the clearances (cylinder head cover needs replacing). Is this correct for that?
    GS1000G 1981

  2. #2
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    Yep, that's TDC.
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  3. #3
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    Yes, that is TDC, but be aware that the crank sees that position TWICE for every open/close sequence of the valves. If you are doing something like valve timing, it is also important to know whether you are at TDC on the compression/power cycle or the exhaust/intake cycle.

  4. #4
    bwringer's Avatar
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    Yep, you've got it right.

    Where the ^%$#@! is TDC?
    https://www.bwringer.com/gs/tdc.html

    As stated, sometimes the position of the camshafts matters so you'd need to go around again.
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