Yeah 266 is too hot. 280 and 300 are the two cutoff points in the ECU for limp mode to protect the engine. At 280F you get rev-limited to something like 5k rpm, and at 300 it's going to cut you way down lower than that on revs. I've done a number of track days with my oil in the 240-260-ish range. It's doable, it's just hotter than you want to be, and you really need to change that oil afterwards. Keeping it down to 220 is much better, and is about as low as you can reasonably shoot for tracking this car in a hot climate.
Dropping those oil and water temps gives you a little edge on power too, because you're not heating up your intake air/fuel as much on the way in with a cooler engine bay in general.
|