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Bowgus
 
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Good info ... thanks

OT: My mercruiser thermostat is 140 F


Because if a raw water cooled boat engine is run in salt water, then the
salt will precipitate out and plug up the engine cooling passages at about
160 degrees. So they run a 140 as standard. My carbed 351W closed

cooling
ran a 160 thermostat. Do not know what the new 350 mpi runs.