Quote:
Originally Posted by grey99max
Well, I've melted a few NGK iridium tips. They bend over like a candle in the hot summer sun.... Must have been a bad day at the drag strip. 
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Maybe just too much timing. I back off about 4 deg for the big shots and have been using these for 4 years. If the timing is too high it doesn't matter what plug you use it will melt. However I like being able to have different timing maps for n/a, light shot and heavy shot, it makes life a lot easier and I don't even have to use race fuel anymore, just good ole 94 Sunoco. Thank you UTEC.
Mine are 2 steps colder and I use them for n/a as well. They were in my car for my record n/a run and record nitrous runs.