Hello everyone. This question is for a rebuild I recently performed on 1990 780 Bertone. This is the B230 Turbo Engine. I took the entire engine apart and made sure everything went back in the same way. Replaced all bearings (std)as well as piston rings, oil pump, honed the cylinder boards, etc. After the engine was put back together with a clean rebuilt head it started and worked fine. It then developed a noise as if it was Piston Slap or more like a diesel engine. All sensors are brand new to include the knock sensor and some times I notice the oil light comes on especially if the car is in an angle. The noise is unbearable and it sounds as if there is a lose bearing or something like that. I do not remember removing this so call "Thrust Bearing" and when I order the new bearing set, it came with just the main bearings. May be I missed something here and did not replace this "Thrust Bearing" and for some reason don't know what it is. The engine was torqued to specified lbs and like I said, it went back in the same way it came out. The question is, where does this "Thrust Bearing" goes, I ready an article that it goes on the number 5th journal, but that does not tell me much. Any information you all can provide will be greatly appreciated. The car does have enough power as it should from a recently rebuild, but the noise is definitely no good.
thanks,

Luis