Re: Question on Cam Gear Marks - UPDATE
You might try to put air pressure into #1 to find out the actual cam timing. Fit a degree disc to the crank. As soon as a valve opens you will hear a hissing sound in the carb or exhaust. That indicates that the valve is lifted off the seat. By turning crank slowly both directions and hearing the changing hiss you can get the timing almost as precise as with a dial gauge on the valve.
cheers, Harty
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