Quote:
Originally Posted by fried okra
Brent....so what spark advance lever setting do you suggest to prevent overheating?
thx,
fried okra
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Again, go read what the recommendation of Ford was in the Instruction Book.
The book mentions this multiple times and is clear that for average speeds, ½ way on the quadrant is the recommendations however at greater speeds, the spark lever needs to be "advanced all the way down the quadrant". The spark lever should be retarded sufficiently during hard pulls to prevent spark knock. With today's fuel octane vs. the octane levels back then, this is rarely an issue unless your engine has been modified with much higher compression ratios. So in reality, ½-way advanced on the quadrant is the minimum and fully advanced for any driving over 30± mph.
While discussing the Instruction Book, it is also worth mentioning that most Model-A drivers that I encounter do not follow Ford's recommendations on Shifting either, ...which is why most hobbyists struggle greatly in this regard. Following Ford's protocol generally allows for easy upshifting and downshifting without 'grinding' of the gears. Many other useful tips such as using the clutch, descending steeper hills, and adjustment of fuel mixture.