Posted by pete 23 on August 02, 2009 at 11:11:34 from (173.87.8.73):
In Reply to: distributor plates posted by Charles E. McNelly III on August 01, 2009 at 16:38:14:
No, the number on the plate it the total advance at the engine,ie a 40 plate will give you 40 degrees advance on the crank pulley. If you don't have a advance reading timing light, it is a simple matter to measure pulley diameter and calculate distance from tdc to any degree you want to make your mark. Back when these old tractors were doing the work on the farm no one even heard of an advance timing light so we marked pulleys accordingly. Put in a lot of fire crater pistons in M's and remember 22 degree advance that came with the kit and they even sent a template along to mark pulley l 7/16 degrees btdc. The springs they sent in the kit would rarely return timing to tdc at low idle even when weights and all were new, so you had to be certain to adjust timing while running full throttle.
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