I rebuilt my D80 Track-lok a few weeks ago after wiping the spider gears, and the guy who helped me out restacked the clutches so it would be as close to a locking rear as I could get for now.

it works great, both tires grab HARD, but when making turns im getting a noticable noise especially when in reverse(clicking, and feel it grinding) , and i am afraid it might not be normal.

gonna change out the generic 80-90 with LSD friction modifier in there now, go to a better fluid and see if the noise goes away as well as i can inspect it while i have it open anyway.

what would you guys recommend?

 

Mine did the same thing shounded horrible, i ran synthetic 80-90 and just added about 1/3 of a little bottle of friction modifyer from the dodge dealer. Bout $8 got rid of the....kink kink kink noise you hear when turning at idle speeds. Both still grab hard under power