So I have this "exemplar" W50 sitting in my garage and I figured I'd take the heat exchanger off as "practice" before tackling the W50 in the Tartan in situ. Glad I did. The whole manifold has to come off, then take the heat exchanger off that. I saved myself a world of time. Disconnect all hoses to manifold and heat exchanger. The two end bolts on the manifold come all the way out, then loosen each of the other 4 bolts between those 2 and the manifold lifts off (after removing the valve cover).
So I figured I'd clean and redo the heat exchanger. It needed it. Steel end cap bolted to rather than the grooved rubber duck on the one in the boat. Got it off, wiped it down and proceeded to remove the zinc in the end of it. The entire threaded fitting on the heat exchanger just fell off in my hand on the first light turn. NFG.
Which leads me to getting the Mr. Cool heat exchanger and not looking back. While my boat was fresh water 95% of it's life, if the existing heat exchanger is salvageable, I'll simply clean it up and paint it as a spare.
Took apart the raw water pump as well. Absof'nloutely shredded impeller inside. But the Sherwood pump seems good, so pull the pulley, press out the bearings, rebuild, repaint and put away for a rainy day. Damn things are pricey.
Now, the oil cooler. Anyone want to comment on that? I mean, if I take it out altogether and plug everything for Caribbean cruising, am I asking for trouble? Does it really do much of anything? There is limited space in that location if the suggestion I've seen of upsizing is considered. I'm just leery of eliminating a cooling system part that was original in the design of the engine. Someone had to think it was useful.
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