Aramus, how are you doing with your problem? Any more signifigant clues? Ball bearing bouncing around a can is hard for me to relate to. A slightly hotter engine will develop slightly lower oil pressure. How far did your oil pressure sag? The two forty has a pattern of failure. Your milage might be about right if it is the original unrebuilt, unmantained engine. Loosen the number one injector line off a little. Any change in the noise? I know the engine will be rougher but am only interested in the noise. If the same do number two and listen closely as well. Then report what you experience. You may have found something simple by now already. Let us know and try what I suggest if stumped. Do you have any highly knowlegable car friends to help where you are? If what I suggest does nothing I think you should look under timing in the archives. I want you to check and see if you have slipped your chain a tooth or two. My suggestions are not based on very much but a rough outline of your driveability problem. Plus the now lack of power. Plus trying to get my mind around the noise description. We are here to help if possible. You may learn a lot to get through this if what I suspect is true. While worth the effort in my opinion. Anything unusual you notice now even if you think it means nothing post it. There are some excellent minds on site that might be able to add a solution to your description. I also realise you are not very familar with this site yet but welcome.