[Russ/40]

I'm pleased to see this thread and the entries to it. I have always felt we tend to overreact to the cracks we find. When they happen, they usually don't get any worse, and a significant number of good running engines are found to have cracks when taken down. The concept of pressure testing is most helpful in isolating those engines you can just leave be. Even cracks that do pass water, can most often be delt with with Bars or water glass.