Diff is out of a twin turbo RX7, engine is GSXR1000. It's been making the clunking sound since I bought the car few weeks ago and thought it wasn't a big deal. Yesterday it stalled out in second gear as I hit the brakes in a parking lot and made the usual clunking sound but this time it felt like it did some damage. Now when I take off in first gear I can feel the differential grinding hard. The grinding isn't loud enough for the microphone but I can definitely feel it. It feels like I'm running over a bunch of rocks and goes away after I pick up some speed. It happens 50% of the time and only in 1st gear. I'm guessing it has something to do with stalling out in 2nd gear yesterday.
The fluid seems clean and it is filled right up to the fill hole. Should I take out the diff and inspect the gears?
Videos:
https://youtu.be/_LVe4ucF-GEhttps://youtu.be/_RKA-hpQLWo