Magneto to Distributor Conversion...

Stemmy · Aug 17, 2011

Just wondering what all is involved to do a Mag to Dist. conversion on my BN? Is it just a simple unbolt/bolt up? (basically). I plan on eventually converting over to 12 volt like I did with my M.

El Toro · Aug 18, 2011

You can convert your existing mag to a distributor by disconnecting the coil wir ein your mag that goes to the points. Install your auto type coil and if you're going to use 12 volts run a wire from your ignition switch to the + terminal on your coil, then a wire from the coil's neg terminal to the points. You need to run battery voltage to your ignition switch and disconnect the grounding wire on your mag. Hal

Janicholson · Aug 18, 2011

Purchase a Distributor from a B, BN, A, SA, C, or CS, 100 120 etc.
Do not get one from a cub, or H or M they have differing spark advance curvs.
Remove the mag, and put it on. A 6v coil will be fine, and eventually a ballast resistor can be used to make it OK for 12v.
The ignition button will need to be changed to one from a distributor equipped tractor, as the Mag button is a grounding kill switch, and cannot be made to control ignition source voltage.
A key switch is nice if you want added security.
(just OFF ON)
Put the distributor on the mount, a little timing, and there you are. Jim

Stemmy · Aug 18, 2011

(quoted from post at 11:11:39 08/18/11) Purchase a Distributor from a B, BN, A, SA, C, or CS, 100 120 etc.
Do not get one from a cub, or H or M they have differing spark advance curvs.
Remove the mag, and put it on. A 6v coil will be fine, and eventually a ballast resistor can be used to make it OK for 12v.
The ignition button will need to be changed to one from a distributor equipped tractor, as the Mag button is a grounding kill switch, and cannot be made to control ignition source voltage.
A key switch is nice if you want added security.
(just OFF ON)
Put the distributor on the mount, a little timing, and there you are. Jim

Right, b/c H's & M's rotation is different than the smaller tractors. My BN has a mag button on it but its not hooked up, so I just turn the gas off and let it run itself dry.

When I go to change them, Would it help if I set my BN at TDC #1 cylinder and then took it off, then when I bolted the distrib. up set it so the rotor is at the #1 position on the cap?

Owen Aaland · Aug 18, 2011

All IH gas engines from the A & B up through the 450 use distributors that run clockwise. The diesel engines and the gas engines in the 9, 600, and 650 series run counterclockwise.

Stemmy · Aug 18, 2011

(quoted from post at 13:33:38 08/18/11) All IH gas engines from the A & B up through the 450 use distributors that run clockwise. The diesel engines and the gas engines in the 9, 600, and 650 series run counterclockwise.

ohh ok, thanks for the correction.

Magneto to Distributor Conversion...

Stemmy

Member

El Toro

Well-known Member

Janicholson

Well-known Member

Stemmy

Member

Owen Aaland

Well-known Member

Stemmy

Member

Similar threads