You said that I wasn't in an engineering field that dealt with engine design. Not me. I am fully aware of engine design, crank rod design, material design, and stress analysis in general. I'm trying to get you to understand that some crank rods are not machined, but are as cast. Just like the standard hot rods crank that I took out of my engine that is as cast and not machined down. You seemed to be hung up on the word defective. Ok, let's call it a manufacturing error that not allows the part to be used correctly, just like an egg shaped hole or a crack. Both of those are also manufacturing errors. This rod is missing some machining that hot rods said that it is missing. So obviously they feel that the smooth transition needs to be there. Thus a crank rod and crank manufacturer has designed it to be that way. So maybe you should call and tell them they are wrong as well.they don't seem to understand either.
