I did an introduction in another forum, but given the year of my boats, I am probable better suited for this forum. My name is Terry (called Socks by many- long story, ask me sometimes and I will explain) I live in Alabama. I recently purchased a 1983 270 Sundancer. Cosmetically she's in excellent shape. Interior is really good. Outside upholstery is great. The outside wood trim is showing some weathering. She has twin Mercruiser 5.0 (I think) GM engines.I know they are GM's but how do I determine if they are 305's or 350's? The boat was on a trailer at the time of purchased so no sea trials were possible. Mechanically she has a few issues. The Port engine has water in the oil. It's milky. Engine runs, sounds OK but I didn't want to run it very much. Hour meter shows 1025 hours. Starboard Engine seems to be fine. Cranks OK sounds good etc. However, I went to winterize the starboard engine using a muff and container of antifreeze. After cranking and turning on water, I noticed no water being exhausted. Not wanting to do any damage, I shut it down. The milky oil was known at the time of purchase and the price reflected that. So I go into this project knowing I have a lot of work ahead. This isn't my 1st boat, I've owned a couple of inboard cruisers, but it is my 1st I/O. Now, with all this said: I do have a few questions. 1. Starboard engine not exhausting water -- Where should I start? 2. Water in Port engine. I realize worst case scenario is a cracked block. I also realize it could be a number of other factors. My plans are to pull the intake --- then the exhaust (riser etc) then the heads --- Any suggestions, ideas, comments? Thanks in advance.