The Ford Barn

Red rider · 12-11-2023, 12:29 PM

I have a distributor in my 1926 T, and I seem to have a need to replace my coil about every year. Is this to be expected, or should I look for a problem?

J Franklin · 12-11-2023, 02:08 PM

There is something going on that is not correct. Time for some investigation.

rotorwrench · 12-11-2023, 04:51 PM

A lot depends on what the primary coil resistance is and what voltage the cars electrical system has. There is also a need to know if it's a standard points breaker type ignition or an electronic ignition.

6-volt systems can use a 1.5 Ohm primary type coil with no ballast. On 12-volts, either a ballast resistor or a 3-Ohm coil should be used. I still use the Echlin brand coils. Some prefer Bosch coils. Electronic ignitions should use a type of coil that is recommended by the ignition system manufacturer unless testing would prove another type.
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redmodelt · 12-13-2023, 01:34 AM

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Could be you have the coil hooked up backwards. Google how to check coil polarity.

12-11-2023, 12:29 PM	#1
Red rider Junior Member Join Date: Feb 2020 Posts: 1	Coil Issues I have a distributor in my 1926 T, and I seem to have a need to replace my coil about every year. Is this to be expected, or should I look for a problem?

12-11-2023, 02:08 PM	#2
J Franklin Senior Member Join Date: May 2010 Location: Oregon Posts: 5,963	Re: Coil Issues There is something going on that is not correct. Time for some investigation.

12-11-2023, 04:51 PM	#3
rotorwrench Senior Member Join Date: Jun 2010 Location: San Antonio, Texas Posts: 16,436	Re: Coil Issues A lot depends on what the primary coil resistance is and what voltage the cars electrical system has. There is also a need to know if it's a standard points breaker type ignition or an electronic ignition. 6-volt systems can use a 1.5 Ohm primary type coil with no ballast. On 12-volts, either a ballast resistor or a 3-Ohm coil should be used. I still use the Echlin brand coils. Some prefer Bosch coils. Electronic ignitions should use a type of coil that is recommended by the ignition system manufacturer unless testing would prove another type. .

12-13-2023, 01:34 AM	#4
redmodelt Senior Member Join Date: May 2010 Location: Portland OR Posts: 6,342	Re: Coil Issues Sponsored Links (Register now to hide all advertisements) Could be you have the coil hooked up backwards. Google how to check coil polarity. __________________ I know the voices aren't real but damn they have some good ideas!