Just checking, Clyde... You said to put "about 50 lbs." of torque on the two bolts, right? These are the same size bolts used in E-class Benz rear brake calipers, and IIRC they're called at 85 ft-lbs or 115 Newton-meters...
Torque is a function of the fastener size. I forget how large the bolt is that requires an E18 socket, but it's not a small fastener, and I routinely torque the nuts on Crosby wire rope clips to fit 1/2" aircraft cable (7/8" socket) to 65 ft-lbs. They're smaller than the E18 fastener in question...
Perhaps one of the forum members who works at a dealership can check the OEM engine torque link bolt torque value and report back; I'd bet a fair chunk that it's more than 50 ft-lbs., and that's a pair of bolts that you *DO NOT* want coming loose accidentally.
Just trying to help.