All of what you wrote was interesting but it comes down to putting more stress on the bolt then it will see in service by torquing it above that level. If you go overboard you will collapse the metal spacer in the radius arm bushing pn 106716. As is usually the case you cannot improve an entire system by changing one part. It usually takes a reengineering of the entire system or you just move the weak point to somewhere else in the system. Before you continue you should discuss this with a Delorean vender as they have all "been there-done that" and now have a good way to fix this weak area. There is no substitute for experience so before starting on a new project like this you should get all of the history that you can. David Teitelbaum vin 10757 --- In dmcnews@xxxx, tobyp@xxxx wrote: > Hello List - This is Toby Peterson ... checking in. > > I thought that I'd take a little time and give you some addtional > background behind the engineering considerations that go into > resolving issues like the trailing arm bolts (TAB). I will try to be > as brief as possible, and will also try to make it "value added" for > everyone's learning. The following terms need to be defined because I > will use them a little later: "Ftu" = allowable ultimate tensile