Yah I totally get the heat from RPM, upshifting and especially downshifting. If not done properly, (I double clutch on the way down) downshifting really beats up the synchros and generates a LOT of additional heat in a localized area. I've not had an MT82 apart yet, but I assume they have some type of clutch facing on the blocker rings, which makes them grippy and fast shifting, but probably doesn't survive the rigors of road course use well, hence the comments I've seen other members make about dog rings LOL.Calimer is a drag racer so are most of the guys over at Mustang 6g. Road course puts more stress on the trans since you have to shift up and down. The down shifting is probably harder on the trans than the upshift. Combine the constant high rpm shifting with 20-30 sessions or more on track and heat is a real factor that isn't an issue for high horsepower cars on a drag strip.
I'm just trying to satisfy curiosity here and wondering if I should get a hold of a core and start looking into it myself. There are TONs of these transmissions out there, and if there was a real solution that was cost competitive with the Tremec, I'd think it would save lots of headaches. I get what Calimer is saying when he refuses to stand behind an installed trans. In his mind if it's got 6 forward gears and one backwards gear and it spins over on the bench it's a good unit. The issue is it's not that simple in real life, and admittedly road racing is the harshest environment and the customers are low volume compared to all the mouth breathers that drag race. So I'm sure when a road race guy starts having failures he doesn't have a good answer, and it's not his bread and butter anyway...