Originally Posted by gamedog1966

guys im pretty good at building and breaking in my diffs but i kno i just rebuilt my diff in my sc10 like 3 wks ago and it feels fairly smooth with the wheels on but if i take em off and turn the hexes it feels gritty as hell and i have the bfast diff in it and it still has great traction and performs well. i race normally 3x a wk and on sat im running 7-9 hr before the race and race that day also, on sun im there from open til close and race then as well. what im asking is this too much driving on my truck to think that no matter how well i build the diff and what high end products i use that it will still get gritty after thtat much running? am i being fair to the diff? i just thought that no matter how much i drive it will take at least a few months for the diff to get gritty