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Dave..... ..yes, no, and maybe..... .ya' forgot to tell us wheather your 8N is a frontmound distributor engine or a later sidemount distributor engine. makes a big difference in the ignition electrics. Gack....its hard to verbalize a picture diagram of electricals when I don't know which picture your are refering to. Another tutorial....N-Tractors have 2 types of ignition systems. Frontmount and sidemount. Frontmount already have mounted on the backside of the dash what is called a "ballast resistor". (Side mounts do not have this) This has several functions but basically it is designed to control the current/power going thru the frontmount ignition coil/points. Too much current/power melts the insulative "tar" inside the ignition coil and shorts out the turns of the coil and reduces the sparkies so the tractor don't run so good. If you have the OEM 6 volt front coil, you want to measure about 3.5 volts at the ignition coil terminal. (3 min 4.5 max) Any other voltage wheather 12 volt conversion or 6 volt OEM and you are going to have sparkie problems. Now then, you use resistors to control the voltage at the frontmount ignition coil terminal. In a typical 12 volt conversion, many for some reason want to keep their OEM 6 volt coil (to save money?) therefore, they get a 12 volt to 6 volt conversion resistor to go in series (like flashlight batterys) with the original OEM "ballast resistor). and this works. Pretty good depending upon the resistance value of the 12 to 6 volt dropping resistor. Sometimes the 12 to 6 volt resistance is too much and instead of dropping the voltage to 6 volts, drops it to 5 volts and then the original ballast drops the voltage even more, like to about 2.5 volts and then the OEM frontmount doesn't make enuff sparkies to run wortha hoot. Some that understand electronics/electricity choose to "consoladate" both afore mentioned resistors into 1 common resistor that does the same thing. Regulate the voltage to the frontmount OEM 6 volt coil to the desired 3.5 volts. So basically, ya' just kant go resistoring willie nillie, ya got to understand electricity somewhat..... end tutorial. As for why you are hearing a little popping from the exhaust, sorry, I'm hard of hearing..... ..Dell
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