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BAD LOOKIN POINTS

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Glenn in OH

01-23-2006 17:35:36

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I have a farmall C that I converted to 12 volts it was my first tractor an knowing what I know now I would not have done it. the tractor ran an started fine but the coil would get pretty warm I did not put a ballist resister in could this be why the coil was hot? the tractor ran fine for about a year then it started running like it had no power it would start but no power. I just looked at the points an they have a dark blue color at the tips an dont look flat. if I put a resister in would this help? an where do I put it. thanks

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Mr. Farmall

01-24-2006 14:55:09

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Re: BAD LOOKIN POINTS in reply to Glenn in OH, 01-23-2006 17:35:36

Get yourself a Pertronix ignition kit and then you will not have to mess around with points again. That is what I did for my Farmall A.

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Brownie 45

01-24-2006 05:14:38

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Re: BAD LOOKIN POINTS in reply to Glenn in OH, 01-23-2006 17:35:36

Have you checked the connections of the primary hookups to the coil? The coil should have a plus & minus marked on the two primary terminals. If you have a negative ground system, the negative terminal should be connected to the distributor. If system is positive ground , the positive coil connection should be connected to the distributor. Worth a look.

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John T

01-23-2006 19:52:59

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Re: BAD LOOKIN POINTS in reply to Glenn in OH, 01-23-2006 17:35:36

Glen, I agree with old n the others. If you use 12 volts on a 6 volt coil, the current is doubled causing it to run way too hot plus the increased current burns the points up very quickly. An external series voltage dropping (12 to 6) Ballast Resistor ahead of the coil will reduce the coils input voltage to 6 as it was designed for and cut the points and coil current in half to extend their life.

John T

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riverbend

01-23-2006 18:44:54

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Re: BAD LOOKIN POINTS in reply to Glenn in OH, 01-23-2006 17:35:36

You need to replace the points. The coil might be okay. The resister is wired in series with the coil. Use a resister from a mid-70s chrysler product. It won't hurt to replace the condenser too.

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billde

01-23-2006 17:52:21

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Re: BAD LOOKIN POINTS in reply to Glenn in OH, 01-23-2006 17:35:36

since you have probably already ruined that coil, why not just go with a 12 volt coil. One less thing to go wrong in the future.

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old

01-23-2006 17:50:00

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Re: BAD LOOKIN POINTS in reply to Glenn in OH, 01-23-2006 17:35:36

12 volts on a 6 volt coil make the coil hot and burns points out fast. Yep you need a ballast resistor. I always use one made for an early dodge truck say around a 1970 or so. Costs about $5-10 and will save you $$ down the road in points and coils

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