Quote Originally Posted by Greg Amy View Post
Choosing a lesser-performance differential that doesn't run as hot is a lot less than having to add pumps, lines, and coolers...

Possibly. The friction from a TORSEN type vs. Salisbury type will depend on a lot of design factors of each specific brand. The end result is the same, they all produce heat. Adding coolers is peanuts compared to getting custom bevel gears made, which is currently legal. Why not allow coolers? Heck it's extra weight and complexity.

Does anyone really think that someone will beat them on the track becuase they have a gearbox/diff/transaxle cooler? I sure hope that's not the case.