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05-23-2017, 09:02 AM | #1 |
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Join Date: Jun 2014
Posts: 37
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Need a New Coil
My A's coil failed over the weekend. I need a bit of education on what and where to buy. Does any supplier provide a better coil than the others? Is there a coil that is more reliable than the others? Is a hotter coil better? What are the pros and cons of a hotter coil? Appreciate your recommendations on what and where to buy. Thanks.
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05-23-2017, 10:01 AM | #2 |
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Re: Need a New Coil
Based on information from knowledgeable people on this forum, I purchased a Pertronix 40111 1.5 ohm "Flame Thrower" coil several years ago. Very happy with it.
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05-23-2017, 10:27 AM | #3 |
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Re: Need a New Coil
I've read here that many coils are oil filled. If you mount them in the stock location, upside down, they can eventually leak.
I went to buy a 6v coil at the local o'reillys and when I shook it you could hear the oil sloshing around. I think the original coils were tar filled or something similar. I see the Pertonix 40111 mentioned above is epoxy filled....nothing to leak out....maybe I'll get one too...
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05-23-2017, 10:32 AM | #4 |
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Re: Need a New Coil
Tar or Epoxy filled is best when mounted upside down like original.
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05-23-2017, 11:44 AM | #5 |
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Re: Need a New Coil
There is an oil filled version, with a similar number, considerably less expensive.
This is the epoxy filled version... https://www.summitracing.com/parts/p...Fcdefgod8HoIGw
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Early '29 CCPU that had a 4-speed, but not any more.......in the family since '62 Last edited by 1955cj5; 05-23-2017 at 01:46 PM. Reason: Accuracy |
05-23-2017, 01:40 PM | #6 |
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Re: Need a New Coil
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05-23-2017, 01:45 PM | #7 |
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Re: Need a New Coil
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Early '29 CCPU that had a 4-speed, but not any more.......in the family since '62 |
05-23-2017, 07:24 PM | #8 |
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Re: Need a New Coil
Speaking of coils I picked up a slant pole coil that would be appropriate for my early 29 tudor. After cleaning I noticed the lightening like trace on the Bakelite insulator (see pic). Should I give it a try anyway, or would I be asking for trouble?
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05-23-2017, 07:37 PM | #9 |
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Re: Need a New Coil
I'd fill the crack with super glue and give it a try.
Be sure the first thing to go on each post is an insulating washer. |
05-23-2017, 08:17 PM | #10 |
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Re: Need a New Coil
How did you determine that it was the coil that failed?
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05-23-2017, 08:36 PM | #11 | |
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Re: Need a New Coil
Quote:
They say their oil filled coil is available in both 1.5 ohm and 3.0 ohm versions, with either oil-filled coil. What is the difference in the vibration resistant epoxy version regarding it's ohm's rating ?? And is any of this necessary in a Model A ? |
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05-23-2017, 10:02 PM | #12 |
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Re: Need a New Coil
Been using Flame Thrower coils on a heavy boat for years. Very robust!
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05-24-2017, 02:45 AM | #13 | |
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Re: Need a New Coil
Quote:
I don't know if your one is OK Paul, But a fellow drove to my house a couple weeks ago in his Canadian 29 Tudor, It still had the Original Slant Pole coil on it and it was still working fine . I thought a tribute to Henry and his Well Built Car |
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05-24-2017, 05:50 AM | #14 | |
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Re: Need a New Coil
Quote:
You didn't mention whether your car is 6 or 12 volts. The pertronix 40111 is a 1.5 ohm epoxy coil. so, 6v; no resistor 12v; resistor needed Just make coil is installed same as battery polarity. battery + grd; + coil to points battery - grd; - coil to points |
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05-24-2017, 08:39 AM | #15 | |
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Re: Need a New Coil
Quote:
"The pertronix 40111 is a 1.5 ohm epoxy coil. so, 6v; no resistor 12v; resistor needed" Joe
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05-24-2017, 12:01 PM | #16 |
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Re: Need a New Coil
agreed, I have a coil with 1000 rust pit holes in it and Ive seen one way worse where the outer case had a good 1/4 of the top half rusted away still tests great and produces a nice hot blue spark on the coil tester.
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05-25-2017, 10:29 PM | #17 |
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Re: Need a New Coil
If you are using a 6 volt system then a 6 or 12 volt coil will do , no resister required . But if using a 12 volt system then a resister is required.
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05-25-2017, 11:23 PM | #18 |
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Re: Need a New Coil
If you have 12v, use the Pertronix 40611 3 ohm coil. No resistor needed as it has an internal resistor. It is epoxy filled.
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05-26-2017, 12:30 AM | #19 |
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Re: Need a New Coil
I would go one step further and clean out the crack as it may contain material that will still allow the spark to follow the path.
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05-26-2017, 12:49 AM | #20 |
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Re: Need a New Coil
Prior owner of that coil may have had a problem with it...just be aware it may fail at some point due to that crack.
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