We reinforced it. Stiffener plates and a solid square bare welded through and into the entire transverse beam. Then the bomb proof diff mount. There was also a tear in the floor which we welded up. Go back to page 1 and top of page 2 and you can see a bit of this work. (wait, wrong forum for those pages. Go here http://www.bimmerforums.com/forum/showt ... s-d-633CSitschultz wrote:Great, thanks for clarifying. To fit the later model subframe, does this mean you have reinforced the subframe mount, or is tearing no longer an issue with the new design? I imagine it is a custom setup you guys used...
With 430nm of torque I wanted to be sure. Car is 39 years old this year.