it's filled with usable yet varied details from replies that complicate which would be the best selection of the many different opinions. taking it as a whole to filter what one would be looking ends up with at least for me glassy eyed daze to absorb it all. so many variables, appreceated.
what i'm shooting for is an infrared scan of individual cyclinder differences taken at easy targets such as the first inch of exposed header pipe, to get an idea of either lean conditions or valve settings and their operational heath. again that could be lost in multiple opinions on case scenarios specifically.
scientifically positioned two outside cyclinders and 2 inside, i'm sure has some differences in the transmission of heat exchange on a perfectly running tuned motor. although close in my mind, probably will never get the perfect point of tuned. even where the chrome has been lost more on the first header curve of one or 2 pipes could change the running temps, unless drastic, i'm not hoping to get that detailed.
in the heated summer air of 80to90 degrees couple laps around the block no's 1 and 4 are quite higher than 2 and 3. no ticking, although the fins (again not a showroom finish on account of water, brake fluid corrosions) they seem to get a dull dark tint around the fins, last night was between 50 to 100 degrees consistent differences between the outer and inner 2 cylinder pairs. it was the first attempt. the motor has 10,600 miles onit and runs alot better than i was expecting from seized carbs and the sluggish oil circulations at the cam level, they've both been restored to or close to factory responses. i'll take some more readings and for "points of reference," temps will be taken just outside of the finned header clamps, on the exhaust pipe. possibly in stages of time. i might even try a separate sample from another bike with close engine wear or approx hours, just for reference comparison.