Split fire plugs

[FineLineMtrSprt]

I didn't even know they still made those junk plugs. I worked aftermarket parts sales when they first got popular In the mid 90s... damn near every set sold was returned. Junk from day 1.... nothing but a gimmick.

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[Zach]

Besides the splitfire fiasco, it's impossible to get a performance gain from spark plugs. A plug will either function correctly, or it won't. A spark is a spark. If your combustion chambers were struck by a bolt of lighting from the sky the resulting fire wouldn't burn any hotter or faster than it would from a properly functioning spark plug. Replace your plugs with quality name brands with the proper gap at the recommended intervals and you can count yourself as one who did not throw money away into spark plug gimmicks.

 

[FineLineMtrSprt]

Well said Zach...I still get a chuckle out of mustang brethren who install 300 buck msd systems on nearly stock engines.

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[Cleave]

Besides the splitfire fiasco, it's impossible to get a performance gain from spark plugs. A plug will either function correctly, or it won't. A spark is a spark. If your combustion chambers were struck by a bolt of lighting from the sky the resulting fire wouldn't burn any hotter or faster than it would from a properly functioning spark plug. Replace your plugs with quality name brands with the proper gap at the recommended intervals and you can count yourself as one who did not throw money away into spark plug gimmicks.

this is not true, simple proper orientation of your spark plugs inside the cylinder can have an effect on power output, around 5-10 horsepower, every single thing you do to an engine will have an effect on power output, you use the wrong engine oil you can lose horsepower, some nascar teams have put popsicle sticks glued to the inside of the intake piping to gain horsepower to try and gain an advantage over the other teams

 

[FineLineMtrSprt]

On most stock naturally aspirated engines trying high dollar boutique plugs is useless. The 1-2hp you MIGHT gain does not offset the price. Also I can't tell you how many times I've seen people WASTE money on high dollar plugs only to have them cause a misfire within a few hundred miles. On a purpose built race engine....its a totally different story.

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[Cleave]

I was arguing that he said a spark is a spark, it doesn't matter how or where it forms, which is false, I never said anything about using high dollar plugs, only that getting normal spark plugs and getting them to all sit in the cylinder at the proper orientation can get you just as much power as that cold air intake with oiled filter everybody loves to buy, without the high price or reduction in intake air charge filtration, it just takes more effort

 

[FineLineMtrSprt]

Ok cool. .I agree

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[RajunCajun37]

They still make Splitfire plugs?

Anyhow, these are more of a gimmick than anything else. The spark will always flow to the closest post and never both. As for gains, the Federal Trade Commission charged Splitfire with "deceptive marketing practices" in a 1997 lawsuit, and legal documents found that drivers do not experience an increase in fuel efficiency when using Splitfire plugs. I believed they compared their plugs with worn out plugs.

My best advice is a set of NGK plugs...keep in mind th gains are probably still going to be marginal and your factory plug are goo or 100,000 miles. I figured I'll replace mine about 70k.

spit fire turds are crap

NGK's rule

 

[Red]

I put split fires in mine and now I am running mid 14's at the track.

 

[Cleave]

pics or it didn't happen, as everyone likes to say