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Discussion Starter · #1 ·
I posted in another thread about wanting to upgrade the reliability of my 94's ignition system after some phantom issues. Got a lot of good input, but it was all from the standpoint of reasonable driving and conditions.

Let's stir it up a little...

Let's say you are some paranoid freak who was told by space aliens that yes, indeed, in a few short months the bird flu infected, (socialist) zombies would be roaming the streets and you would definitely need a Mad Max style bug-out vehicle to get from here to there wherever that is...

And let's say you picked up a nice Bronco, stripped it to the bone, and had a little cash to build it up to meet the task.

Zombie Thread Numero Uno:

You decide to put a nice 351 in your rig, and let's say you have up to $700 (the space aliens gave you a Visa gift card or something...) to put in an ignition system. It can be stock, stock with some upgrades, or totally different.

Again, though, the deal is you want something totally bullet proof, that will take some offroading, long distance runs, and be completely reliable.

What are you going to do???
 

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Satyr of the Midwest
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:stupid

'cept I'd probably go with a factory (Motorcraft) coil...after soldering the primary connections in place.
 

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Discussion Starter · #4 ·
What about the TIF? I've changed 2 in the last 18 months and am not crazy about it. Carrying a spare might be the $35-$100 answer (depending on where you get it), but isn't there a system out there that would be more reliable?
 

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Satyr of the Midwest
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I've replaced two TFI ignition control modules in the last eight years, one in my Mustang that did go bad due to bad plug wires (Accel), and one in my Bronco because I was paranoid about having the original module in there (which still works fine but sits on my shelf). They're actually fairly reliable compared to other systems. Newer modules are manufactured using Motorola/Freescale's MC33094 IC, which is itself pretty good. Click here for that IC's datasheet. It's pretty neat compared to what Ford used for the original circuit developed in the early 1980s. You've already got the remote-mounted module, so that's a leap up from the distributor-mounted modules.

Did you replace your ignition module with a gray one or a black one? You should probably have a black one for your 1994 model. I don't know why you've had bad luck with them; maybe there's something else wrong with your ignition system that's not been accounted for?
 

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The real question is did you replace the TFI with one from Ford, or a cheap one from Autobone?
 

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Discussion Starter · #8 ·
Newer modules are manufactured using Motorola/Freescale's MC33094 IC, which is itself pretty good. Click here for that IC's datasheet. It's pretty neat compared to what Ford used for the original circuit developed in the early 1980s. You've already got the remote-mounted module, so that's a leap up from the distributor-mounted modules.
Great info, I was looking for some specs on an upgrade to the historically problematic first gen TFI. Excellent, thanks.

Did you replace your ignition module with a gray one or a black one? You should probably have a black one for your 1994 model. I don't know why you've had bad luck with them; maybe there's something else wrong with your ignition system that's not been accounted for?
I did replace it with the Grey one, knowing the black one is the one I needed. But I didn't know it was as greatly improved as you mention above. The Black one will probably solve the 212 code (IDM signal) as well.

I'll get a couple on order and put my High-reliability-Zombie-proof-ignition budget in to bumpers, bigger tires, guns, and beer.
 

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Satyr of the Midwest
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No problem. I'm sure the new black (CCD) module will alleviate the DTC 212 for ya. The reason I know the parts have been updates with modern ICs is because I have both original and replacement (gray) modules with their cases opened up, and I was able to get the numbers off of the single IC in the new one.

The original equipment piece does NOT appear to have nearly the amount of integration as the new one, i.e. there are a lot more individual, or discrete, electronic components in the OE module, hence more likely to fail. I should post some photos of them side-by-side, just to illustrate. It's amazing, the difference.

Now the thing about gray vs. black modules, aside from the obvious "push-start" vs. "CCD" is (or should be) merely an internal connection difference. The CCD modules have the dwell controlled by the PCM as the name implies, making for an actually much-simpler design requirement. Instead of the module trying to figure out when to turn on the coil, all it has to wait for is a SPOUT edge from the PCM.

Remember, as long as you have a gun and ammo, a parts store is usually only a walk away. :D
 

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Davis Unified Ignition. A GM HEI dist that drops right in. No more Duraspark! One wire hookup. Cheaper than $700.00. Amaze your friends by telling them you made gm stuff fit your Ford. Seriously, it's the best ign. mod I've done to my '85 351.
 

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Discussion Starter · #11 ·
Davis Unified Ignition. A GM HEI dist that drops right in. No more Duraspark! One wire hookup. Cheaper than $700.00. Amaze your friends by telling them you made gm stuff fit your Ford. Seriously, it's the best ign. mod I've done to my '85 351.
Interesting...
If you can't already tell I've got it in for that TFI. How does this GM mod replace it, and what are the other major components?
 
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