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  #13   IP: 24.152.132.65
Old 01-24-2018, 08:05 AM
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ndutton ndutton is offline
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Marine engines won't seize just from sitting idle. There had to have been water incursion into the combustion chambers and/or crankcase. With the crankshaft roll pin sheared off I don't see any way this will be resolved in situ. The engine is coming out of its hole sooner or later, may as well get after it.

In addition to getting things unseized you have to find the source of the water incursion or risk it happening again. Possibilities are manifold breach, head crack, water jacket breach, over cranking with the thru-hull open and maybe a few more I've overlooked.

If you decide to try and repair it in the boat you can fashion a pretty decent work bench with a couple layers of 3/4" plywood over the engine space. As a lifting means use the main halyard and a block & tackle, come-along or whatever sparred out by the boom (boom in compression only, all engine load borne by the halyard-tackle rig). The main hatch is plenty big enough to give you a clear shot at the engine. Be sure to check the forum archives for lifting eye shortcomings on older engines.
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Neil
1977 Catalina 30
San Pedro, California
prior boats 1987 Westsail 32, 1970 Catalina 22
Had my hands in a few others
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