Quote:
Originally Posted by locomotivebreath
How do you guys think these plugs look ? I have about 1700 miles on them on a fresh 406 with 10.00.1 . I ran 5 gal of leaded 110 once - made no noticeable difference . I poured in a can of octanium from VP a few hundred miles ago just because I had it - no difference . Smells just a tad rich at idle but runs fantastic . No hint of detonation and gets excellent mpg . 1st pic is # 1 , 2nd is #8
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1.
It would help enormously if you'd crop and resize pictures so the detail that mattered was more prominent.
2. Given the leaded fuel, and the additives, I don't think anyone can say for sure what's going on in that chamber based on the color of the porcelains. I haven't seen brown plugs since the lead was taken out of gasoline.
3. For 1700 miles, either the photo wasn't focused sharply enough, or you've got a lot of rounding of the center electrodes.