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Revised Spark plug firing order mod?

Lucifer sam

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I stumbled across this web site with a lot of good info on lima 2.3
http://www.hotrodhigh.ca/2300Shockin.html

I swapped the intake side spark plug wires as pictured, and i think i actually gained a few ponies. At WOT past 3k it seems to pull a little better. And it actually accelerates in 4th gear at 60mph.

I also noticed less stumbling on take off.

Anyone else try this?

Im kind of wondering if it just advanced the timing a degree or 2 if both coil packs dont fire at the exact same time
 


shane96ranger

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It's got waste spark, which means that coil pack actually only has 2 coils in it, not 4. So each time one coil fires, two plugs are sparking. It did not change the firing order, and did not advance the timing. Rather, the mod just has both plugs firing on the just the intake side instead of the intake and exhaust.
 
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alwaysFlOoReD

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I remember reading a little on waste spark systems a little while ago. IIRC the spark naturally gravitates to the high pressure cylinder [intake compression stroke] and some excess goes to the low pressure cylinder [exhaust stroke]. I don't understand how/why the spark chooses. BUT..... sounds like this mod directs ALL the spark energy to the one plug which I think would lead to a higher energy spark which would be more likely to burn through plug deposits and light off bad mixture better.
Do I understand this correctly?
Thanks,

Richard
 

shane96ranger

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I remember reading a little on waste spark systems a little while ago. IIRC the spark naturally gravitates to the high pressure cylinder [intake compression stroke] and some excess goes to the low pressure cylinder [exhaust stroke]. I don't understand how/why the spark chooses. BUT..... sounds like this mod directs ALL the spark energy to the one plug which I think would lead to a higher energy spark which would be more likely to burn through plug deposits and light off bad mixture better.
Do I understand this correctly?
Thanks,

Richard
It is directing it to two plugs rather than one - his motor has two plugs per cylinder, making this possible. One plug will fire from the electrode to ground, while the other plug will fire from ground to the electrode (different polarities).

EDIT: Here's a good description of how it works: http://rockledge.home.comcast.net/~rockledge/RangerPictureGallery/DIS_EDIS.htm
 
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Lucifer sam

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It's got waste spark, which means that coil pack actually only has 2 coils in it, not 4. So each time one coil fires, two plugs are sparking. It did not change the firing order, and did not advance the timing. Rather, the mod just has both plugs firing on the just the intake side instead of the intake and exhaust.
It changed the firing order of one coil.

Could just throw a timing light on it and check both coils to be sure about the timing.
 

94 lngbd

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I did the plug wire swap yesterday & I am always having a load of scrap metal on my truck & boy did this make a difference especially with 4.10 gears & 33's.

Its like a v-6 or 4.88's were installed
 

Lucifer sam

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Im curious what its going to do to my gas mileage
 

94 lngbd

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on the tank of gas I went through yesterday It didnt seem to go by as fast. I dont have the time or days available to test the milage on road trip as my job is basically 7 days a week & if I decide to take a day or two off then its for vehicle maintiance or doing stuff around the house.
 

shane96ranger

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It changed the firing order of one coil.

Could just throw a timing light on it and check both coils to be sure about the timing.
So is one coil for intake, and the other for exhaust?
 

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It is directing it to two plugs rather than one - his motor has two plugs per cylinder, making this possible. One plug will fire from the electrode to ground, while the other plug will fire from ground to the electrode (different polarities).

EDIT: Here's a good description of how it works: http://rockledge.home.comcast.net/~rockledge/RangerPictureGallery/DIS_EDIS.htm
When a coil fires, high voltage current flows INTO the top of first plug and OUT the top of the second plug, completing a big loop in each case.
It sounds to me it leads off with the main plug, and then a little bit later the second one fires halfhearted.

It has been years ago (probably close to 10 by now) somebody on here was making noise about what the point of it was. I took it as when the flame front approaches plug #2 it fires and gives it a boost. I don't have one and don't really follow them that close so don't take that as gospel. :icon_thumby:
 

Rose2300

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is this applicable to duratecs as well?
 

adsm08

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is this applicable to duratecs as well?
No, it isn't. This mod, as I understand it, relys on the dual plug system to even be possible. The duratec was single plug engine.
 

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