Thanks all for the input. Back at home off my singlehanded mini-cruise, and am pleased to say that the mixing elbow is not an immediate problem, and that it and the heat exchanger can be dealt with over the winter. The water pump belt was slipping, but for only a few minutes on startup, with revs and maybe some built-up heat it would work fine. It worked fine all season, then began to misbehave. I had set the tension loose and figured it was OK, since it worked.
Learned something useful - that you can hear when your cooling system fails. Also, in investigating this, I noticed two issues in the related bits and pieces that I felt were worth writing up. - 1) a corroded screw that could cause a cooling system failure 2) Stupidly located 33-2 system components that create maintenance and possibly operational problems. (easily relocated in 10 minutes at no cost, but hadn't occurred to me before to do it) Post and phots here: http://cncwindstar.blogspot.ca/ Dave - Windstar - 33-2
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