From the Lexus Forum: Cutting Spark Plugs ....
 

-First off, I don't recommend this.
-Second, I am just providing an informational link.
-Third, I do not have an ax to grind on whether one car or another is better, or worse. (Well OK, I do like Mercedes)

Cutting plugs:
http://www.georgenitta.com/kitv/sparkplugs.wmv

Link found at:
Lexusclub

Enjoy

Haasman

The spark does not "burn" the fuel, but ignites it. The fuel burns when an ignition source is used and O2 is supplied. I agree that spark distribution can assist in ensuring complete combustion, however I am not sure that cutting the electrode back is the answer.

"Lots more horsepower and better fuel economy..." I really doubt the HP claim. Most modern engines are running pretty near design peak.

Just a bigger gap (hence higher voltage spark from the increased resistance), and more surface spark effect.

In some engines, this will make a difference. Hans tells me they used to open up the gap to almost a full 1 mm in one of the 60's sixes (don't remember which one) and that gave much better idle and off line performance. Only worked in the one, in either of the other two common ones (230, 250, 280), the opposite was true, it ruined the idle.

All depends on the engine, I suppose, just like some engine run better on a certain brand of spark plug, or are greatly improved by indexing the plugs while other it doesn't matter.

I'm perfectly happy with the Bosch Platinums (single electrode, straight non-resistor wireset) in the 280. My problem there is keeping the points clean, I suppose I need to de-oil the upper part of the distributor.

Peter

Peter

hmmm

NGK / Bosch billion pound research budget for F1 / indy car racing

Vs.

some bloke in his garage.

discuss. :D

Some time ago I invented a carburetor that would give 100 mpg on a V 8 engine.
One of the big oil companies bought the idea, just to shut me up. ;) :D :D :D

There is no free lunch.....

Really? How did you get special treatment? They just killed me to shut me up about my 200mpg carb set-up...

(I dipped it in Slick 50...)

Milliseconds faster by shortening the electrode???? I guess electrical conduction through metal isn't fast enough for this guy!... and the findings from billions spent on spark plug research by the likes of Champion, Motorcraft, A/C, Bosch, and NGK pale in comparison with the findings that this guy has come up with!:rolleyes:

I won't hold my breath waiting to see these new plugs on the market, nor articles on this development in the respected automotive engineering magazines.

Splitfire ? :D

You're right, manny.:o Goes to show you there's a sucker born every minute.

"Splitfire" electrodes (multielectrode plugs) have been around since WW1. Used in aircraft engines to get better ignition....

Mazda used them in the first rotary engines, too.

Peter