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Author Topic: Upgraded to a hotter coil  (Read 15023 times)

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Offline MontanaEagle

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Upgraded to a hotter coil
« on: January 10, 2011, 09:20:51 PM »
I replaced my spark plugs and wires back in November, and ammachine390 showed me this PDF:

http://www.amceaglesden.com/images/Downloads/MIU.pdf

Basically is shows how to upgrade to a hotter coil.  Well I wished I hadn't just bought new wires, but figured I'd do the upgrade eventually (aka when I had enough money).  Finally just after Christmas I had enough (it cost roughly $110 for everything).  So I pulled the old coil out, and pulled all my wires, gapped my plugs, put a bigger rotor cap in and all that jazz.  And my only problem was that I switched my plug order around (again) at least this time I knew what was wrong.













I did go back in and change the connectors that attach the wires to the coil.  I didn't have any connectors and just wrapped the nodes with the wire as can be seen in pic 2.  Also, I re-did the spark plug boots as I didn't set those up quite properly.  Long story short, Francine starts a little better now.  Still takes a bit of cranking in the cold, I don't even try in this temp (currently about 5 degrees out).  I'll replace the carburetor probably over the summer to help her start a little better.
« Last Edit: August 22, 2022, 05:01:06 PM by vangremlin »
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68AMXGOPAC

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Re: Upgraded to a hotter coil
« Reply #1 on: January 10, 2011, 10:47:02 PM »
Wow nice job !! She even has that set of triple vacumm connectors on the valve cover in place.
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Offline MontanaEagle

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Re: Upgraded to a hotter coil
« Reply #2 on: January 10, 2011, 10:49:00 PM »
Quote from: 68AMXGOPAC on January 10, 2011, 10:47:02 PM
Wow nice job !! She even has that set of triple vacumm connectors on the valve cover in place.
Um... is that the feedback stuff with the little yellow plugs?
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Offline ammachine390

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Re: Upgraded to a hotter coil
« Reply #3 on: January 10, 2011, 11:40:36 PM »
Nice Job. Just curious to know why you chose a Accel Coil (if thats what it is.) instead of of the pertronix?

Quote from: MontanaEagle on January 10, 2011, 10:49:00 PM
Quote from: 68AMXGOPAC on January 10, 2011, 10:47:02 PM
Wow nice job !! She even has that set of triple vacumm connectors on the valve cover in place.
Um... is that the feedback stuff with the little yellow plugs?


Yes, those are the feedback vacuum solenoids. They are used to control the idle speed, and where the air is directed to, either upstream or downstream.
« Last Edit: December 27, 2011, 03:57:42 PM by ammachine390 »
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Offline xtcinoz

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Re: Upgraded to a hotter coil
« Reply #4 on: March 04, 2011, 02:51:33 AM »
I noticed the Accel coil also is that the 42,000 v. coil? I havn't been able to find any Protonix coils any where.
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Offline MontanaEagle

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Re: Upgraded to a hotter coil
« Reply #5 on: March 04, 2011, 10:42:31 AM »
Quote from: xtcinoz on March 04, 2011, 02:51:33 AM
I noticed the Accel coil also is that the 42,000 v. coil? I havn't been able to find any Protonix coils any where.

I used this coil, I don't know about the Protonix one:

http://www.amazon.com/gp/product/B00064P99W

and these plug wires:

http://www.amazon.com/gp/product/B00064P99W

With the Bosch Platinum plugs (I found those on RockAuto and gapped them to .045).  I also just searched Rock Auto for a 1985 Ford F-150 with a 300 CID engine for the cap, adapter and rotor.
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Offline maddog

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Re: Upgraded to a hotter coil
« Reply #6 on: March 04, 2011, 08:05:20 PM »
if you want some really good plugs try out the E3 diamond fire plugs they give a noticeable increase in hp and a bit better mpg as well. plus they are guaranteed for five years or 100,000 miles.
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Offline amc78concord

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Re: Upgraded to a hotter coil
« Reply #7 on: March 04, 2011, 08:33:53 PM »
Montana Eagle, Do you notice any performance gains at all? Or is just better when starting?
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Offline MontanaEagle

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Re: Upgraded to a hotter coil
« Reply #8 on: March 05, 2011, 11:05:43 AM »
Quote from: amc78concord on March 04, 2011, 08:33:53 PM
Montana Eagle, Do you notice any performance gains at all? Or is just better when starting?

I'm not sure if it is because of the upgrade, but before I was getting about 14.5 mpg (always in 4wheel drive, she's not running right in 2 right now) with the upgrade I'm at about 16 highway 15.5 otherwise.  I think it's from the upgrade.  I don't notice any more power or anything like that.
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Offline Jurjen

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Re: Upgraded to a hotter coil
« Reply #9 on: March 05, 2011, 11:19:11 AM »
Quote from: xtcinoz on March 04, 2011, 02:51:33 AM
I noticed the Accel coil also is that the 42,000 v. coil? I havn't been able to find any Protonix coils any where.

The Accell 8140 is 42,000V at 12V (and 1.4 Ohms)
Due to the resistor wire in the Eagle (1.35 Ohms) once running, it will have 6V primary voltage, so secondary will be split in half too: 21,000V.
Basically it is the perfect replacement for the existing coil.
If you want a little more voltage than you wil have to buy the 3 Ohm Pertronix and bypass the the resistor wire.
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Offline Eagleearl

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Re: Upgraded to a hotter coil
« Reply #10 on: March 05, 2011, 03:28:43 PM »
Would a person need to open up the sparkplug gap to get the most from a hotter spark? Does anyone know what coil Ford used with their duraspark ignition and what sparkplug gap they used?
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Offline mudkicker715

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Re: Upgraded to a hotter coil
« Reply #11 on: March 05, 2011, 03:35:22 PM »
As far as gapgoes my msd 600 ignition is in the .05ish range. It had to be. That .035 let me know it was wrong.

My 96 vicky has a hot spark as well and is .054 gapped
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Offline IowaEagle

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Re: Upgraded to a hotter coil
« Reply #12 on: March 05, 2011, 08:36:12 PM »
I went to .045 with the Accel coil.
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Offline jim

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Re: Upgraded to a hotter coil
« Reply #13 on: March 05, 2011, 08:58:55 PM »
Quote from: IowaEagle on March 05, 2011, 08:36:12 PM
I went to .045 with the Accel coil.
Likewise.
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Offline Jurjen

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Re: Upgraded to a hotter coil
« Reply #14 on: March 06, 2011, 06:21:42 AM »
I have 0.045" with the Pertronix coil and AP985 plugs.
Here's my spark plug guide:
http://forums.amceaglesden.com/index.php?topic=23101.0
« Last Edit: August 22, 2022, 05:04:10 PM by vangremlin »
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