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As I told the other guy with timing troubles, the slots in the mag drive on the engine must be horizontal (- -) when #1 is at TDC of the firing stroke. Does the impulse coupling work on your gutted-out mag? This might not seem important, because it is no longer a mag, needing the "snap action" for a good spark, but it IS important. When the engine is just being cranked over, the impulse will grab, and then "snap", giving a starting timing of near TDC. As the engine "catches" and speeds up, the impulse will no longer catch, and the timing will advance to "running timing", probably 30+ degrees. So, when you are turning it over by hand, and come up on #1 TDC on the firing stroke, the impulse will wind up and "snap", opening the points, and giving a spark at about TDC. If the impulse does NOT grab, and then snap at TDC, the spark at slow cranking will be 30+ degrees too early. If it were still a mag, and the impulse failed, there would be little, if any spark while cranking slowly, however, with this conversion to Kettering ignition, any time time points OPEN, there will be a hot spark, even with a failed impulse. If the impulse is REALLY working, and it's getting out of time, the possiblilites are: 1.)Something wrong with the timing gears/mag drive. This can be checked by verifying the drive slot is horizontal at TDC. 2.)The impulse is keyed to the mag shaft... could be problems there. 3.)There could be a problem with the rotor drive gears in the mag... little gear loose, or wear and tooth damage.
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