Originally Posted by JARblue

My Z was a daily driver in Texas summer heat for 6 years. In stock form, I routinely hit 240F+ temps and the occasional 250+ temp literally while just using cruise control at 70-80 mph driving across the state. If I came to a light, it would heatsoak and pull timing like a mofo. Never found it to be a problem on the street tho - still had plenty of power for a reasonable acceleration pace to get back up to speed.

On the track it was even worse. In stock form, the car was basically done after 1 warm up lap and 1 full speed lap at Circuit of the Americas. The following lap on the back straight I was up in the 280F range and it was limiting RPMs to 5000K at which point I slowed down to pit.

Now that it's no longer my DD, I have installed the necessary mods to address all of those cooling issues.