The Italian rider Pietro Ghersi was excluded from second place for using a different sparking-plug in the engine of his Moto Guzzi.
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The Coso artifact is an object claimed by its discoverers to be a spark plug found encased in a lump of hard clay or rock on February 13, 1961 by Wallace Lane, Virginia Maxey, and Mike Mikesell while they were prospecting for geodes near the town of Olancha, California, and long claimed as an example of an out-of-place artifact.
The shape of the combustion chamber as an "inverted hemi-head", along with the angled cylinder head joint and pitched-roof piston crowns, had earlier been used in the 1930 Van Ranst-designed Packard V12 engine, although in this case the valves were both in the block as side valves and the spark plug was poorly placed at the extremity of the combustion chamber.
Over the next several years, he would also be responsible for such standards as "Ma, He’s Making Eyes at Me", "You’ve Got to See Your Mama Every Night", "Memory Lane", "Lonesome and Sorry", "Palesteena" and "Come on Spark Plug".
Chad Windham, President of the Spark Plug Collectors of America, identified the Coso artifact as a 1920s-era Champion spark plug, which was widely used in the Ford Model T and Model A engines.
Radio suppressor type spark plug wires use compressed carbon powder as a conductor, rather than solid metal wire, to reduce radio frequency interference (RFI) produced by the wires, which may cause malfunction of sensitive electronic systems in modern vehicles.
LandFighter makes use of branded components such as 50 hp Subaru Fuji Heavy Industries engine and a 42.2 hp SYM engine, NGK spark plug and Maxxis tires.