Super 55 gas 6V or 12V coil?

Dopp Creek · Aug 27, 2015

Neighbor called and said his 55 wouldn't start and he needs to move out of the barn for wedding. I found the coil separated (explains no spark) however I do not know if its a 6V or 12V. There's a 12V battery installed and the starter spins like a madman, also has an alternator instead of a genny. I'm thinking it needs a 12V coil since there is 12V battery voltage going to it. I'd appreciate your guidance.

Thanks. Dopp

rvirgil_KS · Aug 28, 2015

12 volt battery and alternator indicates 12 volt. Unless specially modified alternator is negative ground.

I would get a 12 volt coil marked "no external resistor required" such as NAPA IC14SB or equivalent. It should have about 3 ohms resistance between + and -- terminals.

Install new coil with small -- terminal connected to side of distributor.

Dopp Creek · Aug 28, 2015

Thanks Virgil. IC 14 is what we came up with at NAPAthis morning. I apreciate your help?

mr.precision · Sep 1, 2015

Is there a ballast resistor anywhere between the ignition and the coil?
If there is, and you install a 12v coil with an internal resistor, you need to remove the external one.
The points need to see 6 volts, or they will burn in short order.
I bought a Farmall Super C a few years ago that had 3 external ballast resistors in various places. It ran, but not very well.

Super 55 gas 6V or 12V coil?

Dopp Creek

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rvirgil_KS

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Dopp Creek

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