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Setting the Points Engine Timing
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Posted by Allan on November 23, 2003 at 12:54:01 from (148.63.132.164):
Hi Guys, I read a post this morning about point setting and timing which was somewhat misleading, so thought I'd pass along these thoughts: As you undoubtedly already know, each degree of dwell angle change at the points will make a direct and corresponding change to engine timing at a rate of roughly 3 degrees engine timing to 1 degree of dwell (depending on the engine design). Conversely however, engine timing cannot change dwell angle. This is why the method of �wiggling it �till it sounds better� timing setting seems to work to your ear, but is also very seldom correct in it�s relationship to the actual stroke of the engine. Therefore, it is not a bad idea to just 'take a peek' at the timing (preferably just �after� setting the points) to make sure the last guy who timed the engine had his dwell angle set correctly when he timed the engine. Also, it is a good idea to set the dwell on the low side of the spec (wider gap). This is because as the fiber on the point arm wears, the points are always moving (wearing) closer together (increasing the dwell angle). The practice of setting the dwell angle low to start with, will cause the wear effect of the points� fiber rubbing surface to move the points themselves ever closer or "towards" the "correct" setting, then past that correct setting and into the high side of the spec, as the wearing proceeds. Bottom line: a longer period of time in which the points are in correct adjustment. Another neat trick is to time the engine using a timing light hooked to the coil wire instead of the #1 plug wire. Try it; you�ll like it. Just some ideas, Allan
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