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671N Heat Exchangers

terry_charles

New member
I have 671 Naturals in a 38&#3

I have 671 Naturals in a 38' Uniflite. It has Heat Exchangers made by San Juan Engineering. I have to replace them almost every year.. they start leeking coolent out the exhaust and letting salt water in the expansion tank. I do change the zinc's when needed on heat exchanger and on raw water pump. Does anybody know about these heat exchangers??
Getting sick of buying new ones every year.
 
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