Just putting the boat back together what pressure do you tighten the head and big end bolts to?

-We need more details. There can be major differences depending on which engine you have. So if possible tell us which engine and year. Also on some engines you must use new head bolts, not used ones.The best answer to keep your engine up and running correctly is to find the manufacturer's data for that specific engine and torque all your bolts to what they say. They designed and built the engine and are by far the best place for that data.