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Magneto vs. Coil

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bullfrog

11-14-2007 02:58:17

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I would like to change a '48 cub from magneto to coil ignition. Is it as simple as it looks or are there hidden nightmares I should know about?

thanks

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NICK D

11-14-2007 08:26:46

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Re: Magneto vs. Coil in reply to bullfrog, 11-14-2007 02:58:17

I have done this before with no problems that I can remember. It bolts on the same holes in the block as the mag does. I got a battery distributer off Ebay and replaced my bad magneto. It was easier for my to work on a distributer than the mag. I sold the mag on Ebay and came out ahead.

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John T

11-14-2007 05:39:55

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Re: Magneto vs. Coil in reply to bullfrog, 11-14-2007 02:58:17

Frog, Its a Piece of Cake. All youre doing is running a switched (dash mounted On/Off Ign Switch) hot ignition wire down to an external coils input (NOT to distributor) terminal and run the coils other output terminal into the distributors points n condesnor connection/terminal. The ignition switch can get its BAT input voltage from the load side of an ammeter or the L terminal on a 4 terminal Voltage Regulator.

Just match the coil voltage to whatever voltage the tractor battery is (i.e. 6 votl coil if 6 but 12 volt coil (or a 6 with an external series ballast resistor) if a 12 volt battery) Also match the coils +/- polarity to that of the battery, i.e. if at Pos grnd the coils - gets voltage from the switch while its other + wires to distributor or if at Neg ground the coils + gets switch power and its - wires to distributor.

John T

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bullfrog

11-14-2007 05:46:41

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Re: Magneto vs. Coil in reply to John T, 11-14-2007 05:39:55

Thanks John T. What I'm getting at is I want to pull a magneto dist. out and replace with coil dist. Should bolt up the same?

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the Unforgiven

11-14-2007 06:09:32

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Re: Magneto vs. Coil in reply to bullfrog, 11-14-2007 05:46:41

Yes.

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El Toro

11-14-2007 03:51:32

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Re: Magneto vs. Coil in reply to bullfrog, 11-14-2007 02:58:17

Here's a mag that's been converted. Hal

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banjo

11-14-2007 03:20:20

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Re: Magneto vs. Coil in reply to bullfrog, 11-14-2007 02:58:17

Very easy to do. unhook the mag coil and hook the external coil up to condensor,run wire from battery, change kill switch.

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