Got a brief whiff of clutch burn today just slowly backing out of a parking space. Apparently, all it takes is feathering twice with the throttle jumping up for very brief moment to 3k (don't wear new shoes in this thing, you might burn your clutch up as you readjust! )
That never happened on any of my previous cars including an '04 WRX. I'm thinking that new organic clutch material burns at a MUCH lower temperature than the old asbestos lined clutches, although frankly I'm not sure what material my '04 had on it. I just know I never smelled it the entire 4.5 years I had the car (although I did get it at 36k so it was already broken in, but I probably launched that '04 at around 4k about once a day on average and had zero issues) and I don't recall smelling anything on any of the prior 4 cars I had. I've been assuming that it's the organic material that is different on this car.
A little searching turned up this:Notice the bit about structural failure at high RPM/temp. That kind of sounds like some of the stories I've read on here about sudden catastrophic clutch failure while driving (i.e. usually you expect it to start slipping and just get worse, not suddenly fail and have to pull off the road). If the clutch were even slightly engaged at high speeds over a long period of time, it could heat up fast and flat out fail. I can't help but wonder about the design being used, if there's some kind of weak point beyond just the material.http://www.ramclutches.com/Clutch%20.../chapter_3.htm
"ORGANIC - Organic material is common to all stock clutch discs, and offers the best drivability but has limitations as operating temperatures rise. Under high loads accompanied by slippage, they fade because their coefficient of friction drops off. In addition, at high RPM and high temperature they tend to fail structurally."