Posted by BRM (220.127.116.11) on November 12, 2004 at 15:45:10:
In Reply to: Fresh Water Cooling Conversion Bad? posted by Erik Bielefeldt on 03:27:49 11/05/04:
It is reccomended that you flush the engine before adding a fresh water cooling system with a muratic acit solution. There are instructions for doing this in the Moyer manual. Doing that will get rid of the salt deposits. A fresh water cooling system is benificial for more reasons than just the obvious. You see, the thermostats in raw water cooled engines are set to open at approx 145 degrees to help prevent the buildup of scale, (salt deposits.) While this does help prevent the buildup, the engine would prefer to be running at 185 degrees or so. The salt turns to scale at those temps. When you add the fresh water cooling system, (after flushing the engine,) you can also replace the thermostat with one that allows the engine to run hotter. This should also provide the added benifit of increased performance.