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Old 11-09-2019, 11:15 AM   #4
Ol' Ron
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Join Date: May 2010
Location: Chester Vt
Posts: 8,860
Default Re: Flathead "spark knock" ???????

Be interesting to see what the problems are. Haven't worked on many Crab distributors, most work just fine when cleaned up and there isn't much you can do to the advance, except lighten the weights. My friend George was the only one that used them. Some of his engines had pretty hi CR, Ran 87 most of the time.
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