Splitfire plugs?

[Demon]

I was wondering if anyone has tried splitfires in the 2.7? I've had good luck with them in bikes and 4cyl engines but not so much on V8s. Not sure if they would be worth it to drop in the V6 or not but thought I might ask/try.

[Alfa Charger]

I was wondering if anyone has tried splitfires in the 2.7? I've had good luck with them in bikes and 4cyl engines but not so much on V8s. Not sure if they would be worth it to drop in the V6 or not but thought I might ask/try.

Autolite manufacuters the Basic Plug, without the side electrode for Splitfire. All Splitfire does is weld a new split ground electrode onto the plug. The stock Platinums already in the 2.7L are better the than the Splitfire.

[MikeEast]

I put a set of Splitfires in my 1989 F150 4x4 straight-6 and gas mileage went up 13% over about 6 months time. Granted, going from 'sh!tty' to 'crappy' wasn't that big a jump.

Good question on whether or not they make any difference compared to Platinum plugs, I don't recall there being a plat plug back then, or one that I could afford anyway..

Mike

[Demon]

Well as I said, I had REALLY good luck putting them in bikes and 4 cyls.... Better power, milage etc etc. Never put them in a 6 but in an 8 I didn't notice enough of a difference to pay the extra money over a platinum. For smaller engines they are awsome but I wasn't sure how they would do in the 2.7. I know in my old Isuzu, when I dropped them in, it went from doggy to tire shredding! Yes that big of a difference in the 2.5 litre 4. In all the bikes I've had you could REALLY notice the difference. Thanks for all the input everyone, has anyone actually tried them in the 2.7 though?

[Challenger370]

I have not tested them on my Charger yet, because it allreay has 100,000 mile platnum plugs, and it is hard to get to. I did however do some testing with my 2007 Caliber R/T 2.4L and found no difference.

To my logic I dont understand why convential plugs place the spark at the side of the cylendar wall to burn the gas and push the piston down. To me it would be logical to put the spark directly above the piston so the fuel can burn straight down pushing the poston, not to the side of the cylendar wall then make a sharp turn to push down, but that is just my logic.

I tried stock plugs, e-3 plugs, and Bosch +4 plug, My testing was gas milage, and performance. I did not spend the money for a dyno test, but I do have a performance comptuer to test 0-6 and 1/4 mile times.

The E-3 plug is designed to push a glow of fire down above the piston, and the Bosch +4 has the spark directly above the piston providing up to 4 different ground paths. This is simular to the splitfire. I did not see any increase in performance or gas milage, no decrease either.

In my prior cars I have used splitfire plugs, and thought they were great, but I did not do any testing so in reality I cannot say if they helped or not.

Many people say "They worked great for me", or "I never had any problems" They did not do any scientific testing, how did they know they did not have any problems? If they attributed any problems they had to something else, then they did not really know if the plugs helped or hurt. For the "They worked great for me" comment, how do you konw if you have not tested it any.

I can say I used them in both my prior cars, and never had problems, and they worked great for me, but I did not do any performance testing, before and after. I did not document and analize the gas milage, so I dont really know if they helped or hurt any, what I do know is after installing them the car ran ok.

I am a big fan of making things better and upgrades, and I cannot understand the logic of the design engineer who designed the most common spark plug on the market, but all the testing I have done I cannot find any advantage to different plugs (Except for platnums, and their advantage is you dont need to change them as often)

[MagNite]

I tried the splitfires once. I didn't feel any difference at all. No MPG gains either. Just stick to a good set of platinums.

[BToohey44]

I've never been a fan of the spitfires. Not because I've had a bad experience with them but I don't see the need in splitting up the spark. I would think that one fatter spark would be better than two thinner sparks. Just my .02

[svppaul]

While my test was on a 5.0 Mustang, I tested the Splitfires YEARS ago at the dragstrip....made 3 passes in an Auto 5.0 with Autolites....consistent times. Then swapped in the splitfires and made 3 more passes....Again consistent times only 3 TENTHS SLOWER!!!, went back to the pits and put the autolites back in and picked the missing 3 tenths right back up.

That was enough for me to file the splitfires into the trash can where they belong!

Aside from that I have had customers with 2.3 Turbo fords that have run worse on splitfires than any other plug tried.

SO...don't waste your money on them. They might be fine for VERY small engines like a lawnmower or small 4 cylinder but in any performance application they are worthless.