So a couple months ago I decided to replace center diff oil on my OT Carbon with heavy, 100K weight oil.
In the process I forgot to remove motor mount before prying out the center drive shaft, which put a ton of pressure on chassis and god knows what else.
Afterwards it had a lot more torque, wheelied a lot, but I had also installed speed pinion gear and Hobby Park 120mm tires.
Then it started grinding.
I found the pinion and spur gears had separated, re-meshed them, but problem re-occurred.
I realized the center drive shaft was bent so replaced that, but problem continued.
Found the threaded holes in top of motor mount were stripped, so replaced mount, yet problem continued.
Then tonite noticed right rear dog bone was wobbly, replaced that, and just a while ago grinding re-occurred after less than 5 minutes driving.
Was going to swap out center diff from my OT Alloy (it was $120 practically new, I had to) but now I’m seeing it doesn’t look like the Carbon center diff.
Should I buy a new center diff? Outcups?
I’ve replaced so much stuff on this thing.
Fwiw I spun up motor by itself and saw zero distortion on pinion at full throttle, so I don’t think that’s the problem.
Also Carbon is second pic with larger pinion gear.