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Quote:
Originally Posted by Model A Ron
Funny you say that. On my first drive to a car show last Saturday with the 5.5 Head I used less spark and the car started to boil over a little. I went back to half spark advance and the problem went away. When going around 45/50mph I drop it a little more to maybe 60/70% spark and the car runs fine without any knocking or boiling over. This is the exact way I drove it with the stock head. In my opinion full spark advance is just to much for any Model A.....I think that's almost 40 deg. of Spark 
Ron |
I did two things to my A. 5.5 heads and the NuRex centrifugal advance kit.
My spark advance is still hooked up, and looks stock, but you do not have to
move it. The lever stays in the 0 degree' position all the time, and my temp
moto meter gauge runs at a quarter up from the bottom.