Alright I bought a motor knowing that it had a slight knock. I got a really good deal on it. Any way I took it apart and of course it spun a bearing. It wasn't anything bad, it didn't mess up the crank or the rod. The question remains, if I check the clearances on the crank and it is still good and not fubar'd. Am I good to buy new bearings(that are the right size) and replace them. Or do I "need" to get it machined. The motor is just a d15 for the honda and nothing performance is ever going to come of it. The motor just had a new timing belt, new water pump, etc. The compression is good. I really rather not junk it.