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Thread: Spark plug angle

  1. #1

    Default Spark plug angle

    I need to time a xlch but not by the timing mark and want to determine the piston height without pulling the head. Does anyone know the exact angle of the spark plug so I can triangulate the measurement?

  2. #2
    Join Date
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    Default

    Quote Originally Posted by otis71 View Post
    I need to time a xlch but not by the timing mark and want to determine the piston height without pulling the head. Does anyone know the exact angle of the spark plug so I can triangulate the measurement?
    Otis!

    Math adds error.

    Heres's a gutted sparkplug with a small vinyl tube installed.
    Some oil and bubbles in the tube will rise and fall with the piston.
    TDC can be precisely located, and your degree wheel set.

    ....Cotten
    Attached Images Attached Images
    Last edited by T. Cotten; 10-31-2018 at 06:10 PM.
    AMCA #776
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