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.

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. :)

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...

Re: Need a New Coil
 

Tar or Epoxy filled is best when mounted upside down like original.

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

Re: Need a New Coil
 

The oil filled is 40011 the epoxy is 40111.

Bob

Re: Need a New Coil
 

Good eye Bob!

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?

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.

Re: Need a New Coil
 

How did you determine that it was the coil that failed?

Re: Need a New Coil
 

Can that coil be used on with 6 volt original points style ignition or only on the Pertronics unit?

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 ?

Re: Need a New Coil
 

Been using Flame Thrower coils on a heavy boat for years. Very robust!

Re: Need a New Coil
 

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

Re: Need a New Coil
 

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

Re: Need a New Coil
 

Yes, mine is 6 volt, positive ground, original points style ignition. Quoting from Patrick L who just posted:
"The pertronix 40111 is a 1.5 ohm epoxy coil. so,
6v; no resistor
12v; resistor needed"
Joe

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.

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.

Re: Need a New Coil
 

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.

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.