I rode yesterday with the heat index at about 110 degrees. It don't take long at a light for things to heat up quick. A reality in FL riding in the summertime. We should get a cold spell in say 4 months?

 

Piston engine aircraft have aluminum heads and CHTs (Cylinder Head Temperatures) are monitored in climb and at cruise when leaning the mixture - yes, this is done manually by the pilot, not automatically by an ECM. The general rule is that if CHTs get above 380F the pilot should do something about it - open cowl flaps, enrichen the mixture ... something.

Once flew a plane from FL to NJ that had some stuck rings and was experiencing blow-by and associated oil consumption; CHTs in climb over hot FL where flirting with 425F a couple times.

As for your bike running differently when CHTs rose, it is very likely that the ECM retards timing when sensing elevated CHTs.

 

Same here. I don't watch temps anymore but in real hot weather I'll over heat before the bike will.

 

I say not worry about it, unless you are troubleshooting something. You wouldn't have known anyways. It's like when someone first gets an ElectraGlide and all of a sudden they are worried about the voltage they are getting and at what rpm they should shift!

 

seen my temps up the 340's..........till I got a fan.....(jasons), now never gets over 250 in stop and go....

 

are those oil temps of cylinder head temps

 

The readout from my Power Vision the highest temp on my 2007 Ultra has been 300 degrees.That was in stop and go traffic with a ambient temp of 95 degrees.

 

Cylinder head

 

my 2 cents
people scoff at the wetheads but
my limited runs cool and in traffic fans kick on and coolant never gets above 220 and ET sensor never goes above 240 in Florida heat