For some visual inspiration to the thread I went ahead and pulled my number two plug. As you can see I run a cold plug. The car was probably running about 190° the whole time, give or take. 11 to 1 compression. Timing, initial 22-24 and all in at 35-36. Two parts 92 non-ethanol one part 110 race fuel. The plugs have been in for a while and the most recent drove to the track took some passes took the freeway and a recent ride to a friend's house. I've been seeing a lot of 13 in my AF gage. Some 12 at wide open throttle and some 14 at idle, but don't quote me because it moves a lot. ..
View attachment 1715344846 looks a little dark to me...
View attachment 1715344849 View attachment 1715344850
