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Thread: Any reason not to transfer timings marks to the harmonic balancer?

  1. #1
    Join Date
    Jan 2017
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    Perth
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    Any reason not to transfer timings marks to the harmonic balancer?

    Gentlemen,
    I find the timing marks on the flywheel of my Series 1 incredibly inconvenient and difficult to use. They are difficult to see and impossible to use if you are the font turning the engine via the crank handle.

    Are there any technical reasons why I should not make up a little static pointer and transfer the timings by making small marks on the harmonic balancer, like a normal engine?

    Many thanks in advance
    Jeff

  2. #2
    Join Date
    Sep 2012
    Location
    Westlake ,brisbane
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    2,663
    I would say not , my self on my 80" the only time I have used the timing marks is when I rebuilt the motor . I just set the timing by ear. It is like setting up the valve timing it would have been so much easier to just put a couple of marks on the crank gear & cam gear like most other manufactures.

  3. #3
    Join Date
    Aug 2006
    Location
    Melbourn(ish)
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    25,535
    as a bold reference, no, but be warned if its a proper harmonic balance the rubber can make them shift especially when the engine is running and you're trying to use a timing light.

    if you cross mark the inner to the outer of the balancer then you can go a ways to cancel it out.
    Dave

    "In a Landrover the other vehicle is your crumple zone."

    For spelling call Rogets, for mechanicing call me.

    Fozzy, 2.25D SIII Ex DCA Ute
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  4. #4
    Join Date
    Jan 2017
    Location
    Perth
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    92
    Hi Dave,
    Thanks for your advice.
    Yes I understand that harmonic balancer has a flexible rubber component that allows it move a little relative to the engine speed.

    You made a comment that
    "if you cross mark the inner to the outer of the balancer then you can go a ways to cancel it out."
    would you mind explaining what you mean by that?

    many thanks
    Jeff



  5. #5
    Join Date
    Jan 1970
    Location
    Central West NSW
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    24,647
    Only other thing is you can time it more accurately by the flywheel because of the larger diameter - but the difference is almost certainly immaterial.
    John

    JDNSW
    1986 110 County 3.9 diesel
    1970 2a 109 2.25 petrol

  6. #6
    Join Date
    Aug 2006
    Location
    Melbourn(ish)
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    25,535
    Quote Originally Posted by jedwards View Post
    Hi Dave,
    Thanks for your advice.
    Yes I understand that harmonic balancer has a flexible rubber component that allows it move a little relative to the engine speed.

    You made a comment that
    "if you cross mark the inner to the outer of the balancer then you can go a ways to cancel it out."
    would you mind explaining what you mean by that?

    many thanks
    Jeff


    the outside edge moves relative to the inside driving part, if you put a line on it while staitionary and its pointing at your timing marker, when the engine is running at idle (when torque pulses are usually at their worse) you'll see the misalignment in the strobe.
    Dave

    "In a Landrover the other vehicle is your crumple zone."

    For spelling call Rogets, for mechanicing call me.

    Fozzy, 2.25D SIII Ex DCA Ute
    TDI D1(parting/ed)
    Tdi autoManual d1 (Kept it for the girlfriend)
    Archaeopteryx 1990 6x6 dual cab(This things staying)


    If you've benefited from one or more of my posts please remember, your taxes paid for my skill sets, I'm just trying to make sure you get your monies worth.
    If you think you're in front on the deal, pay it forwards.

  7. #7
    Join Date
    Jan 2017
    Location
    Perth
    Posts
    92
    Got It. Thanks Dave

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