Tech info wanted; Lean Burn Dist

In post #26 I show the waveforms for a V8, the 6 should have similar timing. When a reluctor tooth is lined up with the pick-up nub the waveform is at the zero point, and is going on a slanted diagonal path low to high, left to right. The ignition trigger point is slightly above the zero point. It is based on the voltage threshold in the mopar box, that was not well controlled, so it varies between units. The timing varies some because the pick up voltage varies with RPM, that changes the slope, so there is a slight timing advance with higher RPM.

The timing point is going to be where the reluctor advances slightly past where the tooth and pick-up nub are centered. You can verify using this method: Use a timing light, verify your locked timing. Shut engine off, carefully rotate engine to reach that timing mark. Get there only with correct rotation, do not back it up to correct. Pop distributor cap observe reluctor tooth to pick-up position. If you want rotate the engine one more revolution and check again.

If you want 6 crank degrees retard here are the measurements. Based on my NOS 6 reluctor, the outer tooth diameter is 1.310", that is a circumference of diameter times pi (1.310 * 3.1416) or about 4.12 inches. In crank degrees that is 720. So 4.12/720 is 0.0057 " per degree. For 6 degrees, 0.034". That is very close to the width of of a reluctor tooth tip. So to get your 6 degrees the second sensor should be set on another tooth, such that there is no gap, as the primary sees the exit of tooth, the secondary sensor is centered on tooth.

I added picture, the lower pick-up is primary. I stuck the secondary in but it need some clearance to get it to fit. The second pick-up nub need to be on leading tooth edge when primary is centered on tooth. As the rotor is turned clock-wise, it will align with second pickup.