Just received my new coils after a failure of mine with a crack top to bottom on my 45 2N. Naturally was concerned excessive heat caused the failure. Bought a $30 internally resisted coil from Styner and and $15 coil from YT. I only have a p/n 12250 resistor mounted near the dash between the ignition and coil. Do not have a 10306 resistor. The $30 coil is advertised as internally resisted. See pic. It tested at 2.9 ohms. The $15 coil tested at 2.5 ohms. So yes, by tinkering with coil windings the $30 coil did indeed increase resistance.
After I got it all put together. I put my Fluke clamp meter on the coil wire with engine running and consistently got about 1 amp. A long way from the often mentioned coil killing 3-4 amps mentioned here.
After I got it all put together. I put my Fluke clamp meter on the coil wire with engine running and consistently got about 1 amp. A long way from the often mentioned coil killing 3-4 amps mentioned here.