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Old 02-11-2021, 05:38 PM   #1
hope
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Default Volts?crab

What should be the voltage at the crab distributer, on a 12 volts system, with car running?






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Old 02-11-2021, 06:16 PM   #2
rotorwrench
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Default Re: Volts?crab

A lot depends on the coil you are going to use. A late 12-volt 3.0 ohm coil will work without a ballast resistor. A 1.5 ohm coil will need a 1.3 to 1.5 ohm ballast resister to function properly. An original coil can be rebuilt to work with 12-volts. Skip does them all the time.

When the car is running with the points opening and closing all the time, the voltage being indicated by a volt meter will not mean much.
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Old 02-11-2021, 07:54 PM   #3
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Default Re: Volts?crab

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Hope, I had essentially the same question. This thread has some good information in it, though it is a little long read.
https://www.fordbarn.com/forum/showthread.php?t=289706
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