Hello...I have MMR solid diff. mounts on my 91. The problem I'm having is that they wont stay tight. After going to the track the are loose when I get home. Plus they clunk a lot when I put the car in gear. Any tricks to keep them tight? Those studs are not that big and a little afraid that they could strip if over tightened. Thanks

 

Double nut it?

 

Been there , done that.

 

Nylock lock nuts? I'm sure McMaster has to have right thread

 

What is the advantage of having these mounts?
Do they absorb shock better?

 

Check out Nord-lock washers.