Quote:
Originally Posted by Eccentric Old Guy
To get the timing absolutely perfect, the only way to do that is a perfect TDC in #1 cyl, and a timing light that will determine the very instant when the points open.
To find perfect TDC, the timing pin will serve as a reference point, but removing the spark plug in #1 cyl, and rotating the crankshaft while observing the piston through the spark plug hole, is the only real way to find a perfect TDC.
Is there a more perfect way to do it?....and, is it relevant to a good running model A engine?
Seems to me there is a little wiggle room for getting a good running engine, specifically because the spark advance is manual, and not centrifugal, vacuum, or some other form of automatic adjustment.
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Piston movement is nearly undetectable moving the crankshaft a few degrees left or right. I think we are overthinking getting within a gnats a**. After starting the advance is determined by depending on the ear and feel, which will not be able to detect a couple degrees either way.
John