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10-09-2013, 06:41 PM | #1 |
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Join Date: Apr 2011
Posts: 146
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ignition coil adapter kits
Many of the part suppliers sell adapter kits that let you convert to a common type coil. The coil offered is used on model "A"s and 49 up flatheads. These applications do not use a coil ballast resistor in series with the coil supply wire. The original coil mounted on the distributor does use a resistor in the supply wire, generally under the dash.
When you convert to the common style coil, do you eliminate the ballast resistor? Does the common style coil have a higher resistance internally to keep the current down? thanks , donQ |
10-09-2013, 07:31 PM | #2 |
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Join Date: May 2010
Location: Columbia, SC
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Re: ignition coil adapter kits
Most of the later coils are internally resisted, and don't require a ballast resistor.
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10-09-2013, 08:48 PM | #3 |
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Join Date: May 2010
Location: SPEEDWAY INDIANA
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Re: ignition coil adapter kits
Could be what ever you want. Is it 12 volt ? If so run a 1.5 ohm coil and a 1.5 ohm ressitor.
Six volt use the cars ballast etc........ Carefully look over the kits quality , some are pretty flimsy etc.......the factory coil (in good shape) usually is fine as is..... |
10-10-2013, 11:19 AM | #4 |
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Join Date: May 2010
Location: Mid coast Maine
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Re: ignition coil adapter kits
Ford and Mercury to 1948 need a resister with 6 volts system.
Ford is the only one using a resister with 6 volts. 12 volts if the coil needs a resister use it, very few don't need a resister . |
11-09-2013, 10:50 AM | #5 |
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Join Date: May 2010
Location: Lakewood, CO
Posts: 413
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Re: ignition coil adapter kits
I was looking at the kit offered by C&G Ford. Anyone know about the quality? Also, I have an older 12v coil I bought that is installed in a finned cover. Should I run a resistor? If so what type?
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11-09-2013, 01:48 PM | #6 |
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Location: Gaylord, Michigan
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Re: ignition coil adapter kits
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Mike |
11-09-2013, 01:49 PM | #7 |
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Join Date: Jun 2012
Location: Gaylord, Michigan
Posts: 1,605
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Re: ignition coil adapter kits
Oops...I meant Firerod ! Sorry !
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11-10-2013, 07:46 PM | #8 |
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Join Date: Nov 2012
Location: Illinois/Wisconsin Border
Posts: 53
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Re: ignition coil adapter kits
I use a 6 volt coil I brought from napa. states on coil "no external resister required" so I just by-passed the under dash resister. Been working good so far.
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11-10-2013, 09:52 PM | #9 |
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Join Date: May 2010
Location: Napa,California
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Re: ignition coil adapter kits
Last time I used an adapter I ran a 6 volt coil with an internal resistor and eliminated the stock resistor. it worked just fine and I never had a problem. Just be sure the coil you use is labeled that it is internally resisted.
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