E3 Diamondfire Spark Plugs(Your Opinions Plz) | Ford Explorer Forums

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E3 Diamondfire Spark Plugs(Your Opinions Plz)

CHEESYPOOFS

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City, State
Mooresville NC
Year, Model & Trim Level
98 XLT 5.0 2wd
Ok so i bought some E3 Diamondfire Spark Plugs for Big Red (my Explorer obviously lol) they say to save gas mileage improve performance and increase the general life of the engine. they also have a 5 year 100,000 mile warranty. Sounds pretty good to me but then so do many other failed things so i need opinions does anyone else use these? how good r they, do they make a big difference, and r they worth the 7 dollars a piece price tag?
 



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Interesting... To me, at only about 1/3 power of that 383, I'd gain under 2 hp on my OHV, and the fuel consumption would be negligible, so I'll stick with mine- plus, they are running 93 octane, and I'm not sure how that would change the results, since I only use 87.

Interesting though- I'm sure they have some good applications, I dont think for me with a 13 year old 200k Ex, I'd toss them in though.
 






IMHO, a spark plug is just a spark plug. It is designed to do one thing and one thing only. Provide a spark point in which to initiate the process of internal combustion.

Spark duration, intensity, etc... and all other involved methods to improve gas mileage, engine longevity and performance are just not the job of a spark plug.

Any good old stock plug can do the job of these "gimmick" plugs just fine, because that's what they were made to do. To see any kind of increase from any kind of 'performance" plug, you would have to go into ignition timings, stronger discharge, higher capacitance coils, etc, and even when going into all that, a good old stock plug will still do the job, and after you've spent all the extra dough, it comes down to it's not the plugs providing the increases, it's the changes that were made to the ignition system that are responsible.

IMHO, stick to the recommended stock motorcraft plug, or to a good set of Autolites (they make motocraft plugs anyway), the "gimmick" plug will just do the same job the much cheaper stock one is already doing, and it won't do it any better on a stock system...
 






Just send me the money instead. It will do you the same amount of good.

If I were looking for an improvement in mileage from my ignition system, I would look at an MSD box. They burn the plug for 20 degrees of crank rotation under 3500 rpm. I'm not even close to saying that will improve your mileage, but I do know that it sure improves combustion. I can see it on a gas analyzer. Something to think about.
 






I agree with the other guys, I have thrown money away on fancy plugs before (Splitfire, Bosch), but now I just buy what the manufacturer put in it when it was new...
 






Only saying that the video information backed up on Horsepower TV on that site was interesting. If you haven't watched it, do so- it at least makes your eyebrows raise...
 






Link? I can't find anything like that there...
 






All i know is their lawnmower (small engine) spark plugs don't work well. But seeing as how most small engines use a magneto powered ignition coil, not battery power, it doesn't have as much juice, so when you change the gap arrangement, and distance like that, it's a worse running plug because the mower doesn't have the ignition power to utilize the full potential of a plug. Customers have tried to tell me otherwise, but that's just because when they switched plugs, their old plug had no gap, so of coarse the new plug will work "better" but not "better" than the OEM plug. Now if you could hook up an MSD to a lawnmower.... that's a different story.
 












Hmm, pretty interesting. I guess if I was running 400+ at the track I would be more likely to buy them even though 5 horse wouldn't really be noticed, but running a 135ish hp V6, I think the extra few bucks will go somewhere else. Definitely neat though...
 






I think it might make a difference on a motor like that with a carb and no computer.

But with computer controlled fuel being metered in and the spark being delivered at the right time and duration, I wouldn't think it would make a difference.

And, as the rest said, it's gonna take a lot more than a spark plug to help out a 150hp or so V6 with some ungodly amount of miles.
 






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