guys I have a nice set of 502's about 2005 build they are in great condition and only really used in freshwater...
im running my boat most often in salt and I dont like the salt going thru the engines. how hard and expensive would heat exchangers installation be?
or any other solutions??

Only way to go and do it soon.

http://www.offshoreonly.com/forums/g...ng-system.html

we ran one for the 1st time yesterday afternoon so ill be posting some videos on that thread in a few minutes..... so far ran great.