Originally Posted by twisted

im going off the one center diff ive seen at the local track. the driver stopped using it because the thrust bearing was destroyed and he also commented on the rear top hat washer was grooved really bad. he thinks it is due to the amount of pressure on the bearing from having the spring compressed.

it could be user error , i dont know. i do know that iam interested in upgrading from my stock set up. just trying to learn more.