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Farmall & IHC Tractors Discussion Board

Re: Change from Magneto to Distributor


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Posted by ScottyHOMEy on December 19, 2010 at 06:59:58 from (64.222.203.67):

In Reply to: Change from Magneto to Distributor posted by RButler on December 19, 2010 at 04:38:20:

You'll need the distributor with cap and rotor, a coil appropriate for your battery voltage, a new ignition switch, and some wire.

As for procedure, I urge folks to set up the motor with #1 piston at the top of its compression stroke before removing the mag, and then not disturbing the motor until the new distributor is bolted up right. In this position, the rotor button on the mag should be pointing to the tower for the #1 plug wire on the cap, and the distibutor should be installed with its rotor pointing as close to the same position as you can get it. From there it should be only a matter of small adjustments to get it timed up properly.

The coil -- if you are running 6v, you need to be sure that you have a 6v coil. If 12v, you have two choices. 1) You can use a 6v coil as long as you ave the resistor inline in the wire from the switch that powers the coil or 2) you can skip the resistor and get a coil that is designed for 12v input - it's wound differently on the inside to adjust the output to what it needs to be.

The swtich needs to be replaced. As the other have said, the switch for the mag has only the one pole on the bottom of it, and is to goround the mag through the body of the switch. The replacement, if you go with the original type, will have two poles. You can salvage the wire that grounds the mag if you want and use it to comnect the coil to the switch (with a resistor spliced in if required).

To supply power to the other side of the switch, you may have two choices there, too. IF you have an L terminal on your cutout relay/voltage regulator, you can run a wire from there to the switch. If you don't have such a terminal (on a relay, you likely don't), you can run a wire from the switch to the same stud on top of the starter that the battery connects to, it will just take a large eye on that end of an otherwise pretty small wire.


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