The NGK B8ES that was in my quad through thick and thin for the last 3years is back in it.....got ol' reliable back together today......she started on the 2 second kick like a champ.... purrs like a kitten........now I just gotta break'er in and whoop some tail of the new quad owners around here....

later
Superstar

 

I ran a platium 4 on the dyno and then ran a regular plug on the dyno got 1 hp gain on the platium 4 used for rotery motors. how are them apples.

 

Heres an interesting article on spark plugs.spark plugs

 

Thanks, hondabuster, thats great information!

Everyone trying to fine tune an engine should copy this.

 

I think that it is a matter of what your engine likes. I had a Cavalier that got better mileage and better response with splitfires. they did nothing in a chev balzer I had at the same time, if anything they did slightly worse in that motor. The chev liked regular cheap plugs. Then My vortec 350 liked the Bosh plus twos with two top electrodes and did not like the regular plugs. Also might need to check your ignition wires. People tend to look at them and say looks ok must be OK. I replace them with really good quality wires every 20000 to 30000 or so in my automobiles. I am not very experienced with motorcycles or ATVs yet. But I would assume that they wear out the ignition wires too and since their systems produce less spark power than a car they would be more sensitive to any fatigue. Just an assumption on my part. My wife had a rancher though that ran much better after I replaced the ignition wire it had quite a few miles on it when we bought it. The plug alone didn't make much difference.

 

Cheaper than a split fire and does the same thing. try J-gapping your plugs

 

I would stick with NGK i wouldn't go to some exotic spark brand


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86 lt250r
boyesen reeds
renthal chain wheels
port/polish
answer headers
works performace nitros shox

 

A long time ago jc whitney offered plugs called "fire injectors" They fired a spark into the combustion chamber. We put them in a 302 ford and they made a noticable difference in the performance on the car. better mileage (but who cared- gas was 30 cents a gallon) and better acceleration. I dont know wqhy they disappeared.

 

Sounds like slick 50 and splitfires have had class action lawsuits against them, who should we sue next? sounds like NGK has had it easy all these years lets go after them now.....lol

 

I would stay with the NGK, i herd as a roomer that spitfire tends to run a little toooooo hot! So i stay with NGK.