Subsequent discussions with the company who performed the work has revealed that the raw water problems might indicate that the Yanmar 2QM is nearing the end of its serviceable life. Re-powering within 3 years is not really within my budget so this might break the deal. This news makes me feel sick to my stomach because the rest of the boat is solid.
The representative from the mechanic's company figures there would be a slightly better than 50/50 chance on a rebuild. He thinks the raw water system's problems are due to corrosion and that there may or may not be enough material left to rebuild on. I'm already $1000 into this boat due to inspections and taxes. Is it worth spending another $600-700 to pull the head gasket and take a peak?
[This message has been edited by dlabrosse (edited 10-25-2007).]
