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Discussion Topic:
resistor on coil
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JohnA |
12-04-2012 @ 9:09 AM
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Member
Posts: 279
Joined: Dec 2009
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Do I need the small resistor that fits on the orginal tpye coil and which terminal does it go on,what does it do and would it affect starting.Their are two mounting holes.
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JohnA |
12-04-2012 @ 9:27 AM
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Member
Posts: 279
Joined: Dec 2009
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Sorry, that coil is on my 1948 Ford 2dr sedan, everything is on the engine which is 59a 239 6volt
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JohnA |
12-04-2012 @ 9:28 AM
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Member
Posts: 279
Joined: Dec 2009
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everything is stock on engine.
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supereal |
12-04-2012 @ 12:38 PM
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Senior
Posts: 6819
Joined: Oct 2009
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In '48, the resistor was mounted directly on the coil, instead of the firewall. It mounts on the input terminal of the coil. The resistor is necessary to both drop the input voltage to about 3 volts, and to act as a voltage regulator. The part number at C&G is 18-12250-N for the higher quality ceramic type. $20. I suggest you get a copy of the Club's excellent 41-48 book. It will tell you everything you need to know about your car, and then some.
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Old Henry |
12-04-2012 @ 1:29 PM
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Senior
Posts: 738
Joined: Apr 2010
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Here's a picture of it on my '47. Battery wire from ignition switch comes to middle terminal. Current then goes through the resistor to right - coil battery terminal. Left end of resistor support just goes under the left - distributor wire terminal. The resistor lowers the current that is arcing at the contact points in the distributor to reduce burning as well as keeping the coil from overheating. Old Henry (The older I get, the better old looks.)
This message was edited by Old Henry on 12-5-12 @ 11:07 AM
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JohnA |
12-04-2012 @ 4:13 PM
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Member
Posts: 279
Joined: Dec 2009
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Thanks Boys
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