School me on the rod and main bearing term "babbit". I think I understand "shell" bearings. Correct me of course if my understanding is skewed. The shell is made for a certain diameter of the crankshaft. Either the rod journals or the mains. The shell is made from copper brass steel??? but then covered with a "softer" material. Is'nt that material the babbit? the softer wearing surface of the shell or liner as they are referred to in my 522 SC, SO, S parts book. Dacaseguy is resleeving a DC-4. He states it has 3 point, so that would make it 1952 or newer. Would not that tractor have "liners" aka shells for rods and mains. Someone point me to s youtube video where I can grasp this concept of poured babbit bearings. I'm old, thick skulled and a show me learner thanks gobble