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#1
10-10-2003, 08:28 PM
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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
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'03 E320 Wagon-Sold '95 E320 Wagon-Went to Ex '93 190E 2.6-Wrecked '91 300E-Went to Ex '65 911 Coupe (#302580) Last edited by haasman; 10-11-2003 at 08:07 PM. 
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#2
10-10-2003, 08:57 PM
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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.
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John Shellenberg 1998 C230 "Black Betty" 240K http://img31.exs.cx/img31/4050/tophat6.gif
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#3
10-10-2003, 09:03 PM
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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
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1972 220D ?? miles 1988 300E 200,012 1987 300D Turbo killed 9/25/07, 275,000 miles 1985 Volvo 740 GLE Turobodiesel 218,000 1972 280 SE 4.5 165, 000 - It runs!
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#4
10-11-2003, 04:38 AM
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hmmm
NGK / Bosch billion pound research budget for F1 / indy car racing Vs. some bloke in his garage. discuss. 
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C140 420 CL W114 280CE pimpmobile W114 250/8 Hillclimber with M110 and bike carbs - got any hot cams?
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#5
10-11-2003, 10:10 AM
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Quote:
One of the big oil companies bought the idea, just to shut me up. 
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2007 C 230 Sport.
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#6
10-11-2003, 10:26 AM
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There is no free lunch.....
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1972 220D ?? miles 1988 300E 200,012 1987 300D Turbo killed 9/25/07, 275,000 miles 1985 Volvo 740 GLE Turobodiesel 218,000 1972 280 SE 4.5 165, 000 - It runs!
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#7
10-11-2003, 10:27 AM
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Quote:
(I dipped it in Slick 50...)
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John Shellenberg 1998 C230 "Black Betty" 240K http://img31.exs.cx/img31/4050/tophat6.gif
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#8
10-11-2003, 11:12 AM
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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!
 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.
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95 E320 Cabriolet, 159K
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#9
10-11-2003, 12:10 PM
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Quote:
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2007 C 230 Sport.
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#11
10-11-2003, 09:11 PM
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"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
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1972 220D ?? miles 1988 300E 200,012 1987 300D Turbo killed 9/25/07, 275,000 miles 1985 Volvo 740 GLE Turobodiesel 218,000 1972 280 SE 4.5 165, 000 - It runs!
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