What gearing are you running? Today was my first day with my sc104x4 and im trying the 540 set-up. Ive been doing alot of gearing testing started with a 21 and ended at a 15/93 and my temps stopped going down it appeared after 6 minutes of driving hard they are at 180-185.
Im running an lrp x12 octa 5.5 with an optional 12.5mm rotor, im going to try the 13mm rotor(didnt realize there was one when i ordered the 12.5mm rotor)
Its super fast and still plenty of torque until it gets hot.
Got a pair of associated fans i may install in front of the motor but would have to do some dremeling.
On the big track I run a 14/93 will about 25% boost in duel mode or 16/93 in with zero (blinky mode). I have a fan I mounted and last weekend temps we not hot enough to even temp (warm at best). Being smooth helps keep the temps down.
