No, sorry I missed it. Sorry, I am not perfect.
IMO, on a really hot street/race engine, 220-235 isn't too hot, IF it will cool back off at least 20 or so degrees on the road after idling in say bumper to bumper traffic in the middle of the summer. Really wild engines LIKE to run hot. It's knowing where the line is and being able to back away from it. Sometimes, no matter what, once an engine reaches a certain point, you simply cannot cool it back down without hitting the key.
And before you say "oh gosh, 235 is real hot!" think about this. Adding about 15 pounds to the cooling system raises the boiling point to about 250*F. That's just for plain water. Add coolant in the mix and it's even higher. The problem is, you simply don't have the room for a radiator big enough to sustain 250* plus temperatures. Also, the rings don't like that much heat. They tend to lose their tension.
Al that said, I think 220 is a bout the perfect operating temperature for a stock to moderate street engine. Again, idling in traffic on a HOT day and cooling back off to say 190. I don't really like anything I have to run 180 or less. You'll never get all the moisture and contaminants out of the oil.
All this of course is just one peon's opinion.
