ballast resistor?
60 dart
Posted 2019-11-22 12:20 AM (#590524)
Subject: ballast resistor?



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with the key in on position or motor running on position , how warm/hot should the firewall ballast resistor be -----------------------------------------------later
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wizard
Posted 2019-11-22 1:49 AM (#590525 - in reply to #590524)
Subject: Re: ballast resistor?



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My car is in the garage on floorstands for the winter service Chuck, so I can't give you a value right now.
You'll burn your fingers on the porcelain though…...
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1960fury
Posted 2019-11-22 6:35 AM (#590529 - in reply to #590524)
Subject: Re: ballast resistor?



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I think mine gets pretty hot.
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60 dart
Posted 2019-11-22 4:04 PM (#590563 - in reply to #590524)
Subject: Re: ballast resistor?



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thank you gentlemen , i haven't had an occasion to even think about a ballast resistor getting warm since @1967 when i changed the only one
i've ever had go bad on a 57 chevrolet when i was 17 ,,,,,,, a life time ago-------------------------------------------------later
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lonesome mopar
Posted 2019-11-26 12:36 PM (#590791 - in reply to #590524)
Subject: Re: ballast resistor?



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Pardon me guys... you might be laughing but I yanked this part 40 years ago when I started the engine of my Belvie (it was stuck after 15 years ina field)... and I am still wondering what was it for.....
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lonesome mopar
Posted 2019-11-26 12:41 PM (#590793 - in reply to #590524)
Subject: Re: ballast resistor?



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because I run my car without it and I never had a problem ever since....
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wizard
Posted 2019-11-27 2:09 AM (#590812 - in reply to #590524)
Subject: Re: ballast resistor?



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Theoretically, an ignition coil is constructed for a working tension of 7-9 volts, hence the ballast resistor, which is bypassed during the cranking of the starter for to ensure that the voltage drop doesn't affect the ignition sparks.

The risks to run a coil intended for ballast resitor without it is overheated coil and shorter life time of the breaker points.

There are of coarse ignition coils constructed for a working tension of 12 volts continiously, so maybe you have on of those?
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lonesome mopar
Posted 2019-12-06 12:31 PM (#591179 - in reply to #590524)
Subject: Re: ballast resistor?



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thank you Wizard,
Yes.... indeed I have changed the coil several times and I always bought off the counter modern ignition coils (until they used the barrel tipe on any engine).
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