https://www.flowkoolerwaterpumps.com/ <https://www.flowkoolerwaterpumps.com/>


   chris smale


   "FlowKooler water pump impellers prevent engine overheating through
   higher flow rates and increased system pressure. Increasing flow rate of
   coolant through the block reduces the cycle time between the engine and
   the radiator providing more opportunity for heat exchange. When flow
   rate is maximized, the higher flow rates raise block pressure to prevent
   the formation of steam pockets and water vapor that can cause hot spots
   on cylinder walls. This block pressure can also prevent engine damaging
   cavitation"

   No data on flow as a function of RPM or HP. The impellers although large
   are not curved.

   Paul Lamar

In the '70's, Chrysler reduced the number of vanes on the water pump impeller on airconditioning equipped autos. The explanation was to slow the coolant flow to allow more heat transfer. Two things need to be taken into account here. First is the fact that with air conditioning the air to cool the radiator is already heated from the condenser. This slower flow rate would allow more air molecules to extract heat from the radiator and coolant due to longer dwell time in the tubes. Also at the time, narrow radiators with 3 or 4 rows of tubes was the norm. These engines also had very low duty cycles because of large displacement engines.
This would not function in an AC application due to the high duty cycles.

Dale Davies



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