"Since" meaning, once the problem started I have put on new diff mount, half shafts, and new drive shaft. A substantial piece of the diff mount has been grinded out by the flanges of the half shaft. During downshifts and reverse only. I can floor the car with no problem. All bolts are solid, so I think. What could be allowing this...? Could the diff itself be screwed up...?
Anyone know why my diff may be torquing down and striking the diff mount...? It has chewed out a good piece of the diff mount. This happened after I launched the car with new Bridgestone Potenza RE-11A's. Since I have put new half shafts on and a new drive shaft and a new diff mount. Here is a thread I started many months ago and myself, many forum users, and mechanics can't figure it out. http://www.zcar.com/forum/10-70-83-tech-discussion-forum/357305-death-clunk-knocking-4.html