Re: timing

Posted by Joe on May 13, 1998 at 07:53:45

In Reply to: timing
posted by dick on May 13, 1998 at 06:58:41

: are a model's known for jumping time?when i adj. the dis.
:cam (lobes) itlooks like i am 1 tooth off between cam&crank
: i not looked yet any thoughts?dick
Dick
I'm not entirely sure of your question but two things come to mind.
1. You haven't had a minor disaster recently I hope.The weak link in the relationship between the camshaft and the distributer shaft is the oil pump/distributer helical gear "right angle drive" which is held in it's position by a large spring.
I actually had a distributer seize up which caused the entire helical gear and it carrier to be forced upward against the spring and which sheared off the distributer retaining bolt on the side of the head.I could easily see where the source of the problem lay as the distributer had risen up about an inch from the head.
Resolution to this problem involved a rebuilt distributer, removal and inspection and ultimately replacement of the oil pump/distributer gear itself.Fortunately there seemed to be no damage to the camshaft itself. (lucky!)
2. Are you using the correct timing procedure?Normally timing the Model A is done with the spark in the "fully retarded" position.Those of us who don't use a timing light will check the engine timing using the spark lever.With the engine not running on TDC you move the spark lever to advance and then retard the timing.You should hear (and see) the spark as the points open just as the lever reaches the "fully retarded" position.
Some further information may be necessary before we can get closer to your question.Feel free to comment on what I have replied: this may give us more clues.
Best regards,
Joe

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