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The Terminator
Engine/Tuning
Has anyone ever had a plug gap close under WOT?
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<blockquote data-quote="bigmoose" data-source="post: 15644372" data-attributes="member: 64149"><p>According to NGK when a plug gap is closed its from detonation. If you broke off pieces of your piston you'd hear it afterwards. </p><p></p><p>"Hot spots will allow the air/fuel mixture to pre-ignite. As the piston is being forced upward by mechanical action of the connecting rod, the pre-ignited explosion will try to force the piston downward. If the piston can't go up (because of the force of the premature explosion) and it can't go down (because of the upward motion of the connecting rod), the piston will rattle from side to side. The resulting shock wave causes an audible pinging sound. This is detonation. Most of the damage that an engine sustains when "detonating" is from excessive heat. The spark plug is damaged by both the elevated temperatures and the accompanying shock wave, or concussion"</p><p></p><p><a href="http://www.ngksparkplugs.ca/tech-info-spark-plugs.cfm" target="_blank">http://www.ngksparkplugs.ca/tech-info-spark-plugs.cfm</a></p><p></p><p>Sent from my MotoG3 using Tapatalk</p></blockquote><p></p>
[QUOTE="bigmoose, post: 15644372, member: 64149"] According to NGK when a plug gap is closed its from detonation. If you broke off pieces of your piston you'd hear it afterwards. "Hot spots will allow the air/fuel mixture to pre-ignite. As the piston is being forced upward by mechanical action of the connecting rod, the pre-ignited explosion will try to force the piston downward. If the piston can't go up (because of the force of the premature explosion) and it can't go down (because of the upward motion of the connecting rod), the piston will rattle from side to side. The resulting shock wave causes an audible pinging sound. This is detonation. Most of the damage that an engine sustains when "detonating" is from excessive heat. The spark plug is damaged by both the elevated temperatures and the accompanying shock wave, or concussion" [URL]http://www.ngksparkplugs.ca/tech-info-spark-plugs.cfm[/URL] Sent from my MotoG3 using Tapatalk [/QUOTE]
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Has anyone ever had a plug gap close under WOT?
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