Anyone had any experiences with the iridium plugs over copper? I picked up at set of sparkco 9.2mm wires and was going to use ngk vpower plugs and then i started hearing things about iridium. Are iridiums the same as platinum just with a long life span?
don't quote me on this as all things electrical make me cower in the corner, whimper, and wet myself, but i believe that copper gives a really good spark but doesn't last very long, platinum gives a good enough spark for daily grinding but not what you'd want to drive the car hard with but it lasts for a long ass time and prices reflect this, and that iridium takes the best of both (good spark, long life) and requires you to take out a loan.
Iridium just withstands corrosion longer than copper or platnum. Thats why most Iridum plugs come with a 250000 mile warranty. So they are better if you are using some type of aftermarket ignition system like MSD or something that actually sparks more than a regular ignition system.