RRR,
You are the typical forum bully, shown in other threads, not just this one. You feel threatened when somebody replies who knows more than you do.....which isn't too hard sometimes. You are the one that is muddying the waters with blanket statements with no supporting info. Apparently, your opinion [ not facts ] is what counts & anybody/everybody else is wrong. Memo, pal....
Three times that I have seen since I joined this forum, you have insulted my country. Only low lifes insult a person's country. I couldn't care less about personal insults, especially from you. Keep 'em coming! I could have responded to many more threads that you posted in with info that was...how do I say it nicely...BS. But I chose not to post.
This thread started out with the OP asking, 'Why are there so many plug choices'. I am, & continue to provide answers to that question. To answer it effectively requires some history & understanding of how spark plugs work if the OP wants to make an objective conclusion...
And now some more important info about P & I plugs. I do not know how to link articles. This is from Jerry Reeves, Engineering Director at Autolite from enginelabs.com/engine-tech/ignition.
'Moving to Iridium plugs could potentially be a performance advantage, can reduce the reqd coil voltage as much as 20%.....fine wire Irid plugs can improve the combustion process even if there is a high level of exh gas-built in EGR- as with engines with long duration cams.....Claims that fine wire plugs run hotter & should be avoided in supercharged/turbo applications is not true. Reeves points out the fact support the exact opposite conclusion: 2018 Supercharged dodge Hellcat-707hp- specs rid plugs. Turbo 4 cyl Ford engine that pushes as much as 25 psi of boost uses Irid plugs. Let's look at some facts that support why fine wire plugs are a good choice for a performance engine.....
448Scamp,
You will find the intro date for NGK copper plugs [ 1965 ] if you look up NGK history on the net.
