I have never seen so much information in one thread.
Nykon, you REALLY need to do some research before you start posting.
Heat range has nothing to do with the "temperature of the spark" as you stated. The "heat range" of a plug is defined as the plugs ability to dissipate heat from the tip of the spark plug. The Length and construction of the center insulator greatly affects this. A "hotter" plug will dissipate heat from the tip quicker than a "cooler" plug will, hence affecting the temperature of the combustion chamber.
As for iridium, the performance advantage has nothing to do with the fact that iridium is harder than platinum. The advantage comes from the fact that iridium has a melting point over 1000 degrees higher than platinum, so the center electrode can be much smaller than platinum. This means it takes less voltage to fire the plug, and in turn a larger more "powerful" spark (because as we know, when voltage is cut in half amperage doubles)
And as for the plugs, I have installed hundreds, maybe even thousands, of these things into cars. Both customers and my own, and the only problem I have ever seen with them was on ONE plug the porcelain was cracked out of the box.
Sorry for the misinformation guys. Bosch still suck though. I also am going to grab a set of iridiums and coppers and check the resistance on them. I am curious.
sorry nykon, I was in a bad mood writing that post. And justbringit, yeah i know I fucked up ohms law.
But still, the advantage of iridiums and platinums is that they take less voltage to fire. Its actually good to use high end plugs on a car with a weak or "tired" ignition because of this.
Like I said, I was in a bad mood writing that, I didnt mean to attack anybody lol
ASOG is a family that understands no one is perfect. everyone will have a bad enough day sometimes that it spills over into here. The important part is that you let everyone know that that wasn't your normal self typing.
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