Car getting real hot....
A/C water pumps were driven faster than non-a/c water pumps.
35% faster in 1968
The faster they are spun, the more liquid flows and the likelyhood for cavitation increases. Those are both minimized with the smaller impeller.
Ignore the yellow markup. That was for someone else's question.
The big issue with A/C is not the additional load on the engine, which is real, but only a significant load percentagewise at idle rpms.
The big issue with A/C is the heat exchange with the air - the same air that goes through the radiator. Its critical to keep enough volume of air moving at idle and low speeds.
A/C water pumps were driven faster than non-a/c water pumps.
35% faster in 1968
The faster they are spun, the more liquid flows and the likelyhood for cavitation increases. Those are both minimized with the smaller impeller.
Ignore the yellow markup. That was for someone else's question.
The big issue with A/C is not the additional load on the engine, which is real, but only a significant load percentagewise at idle rpms.
The big issue with A/C is the heat exchange with the air - the same air that goes through the radiator. Its critical to keep enough volume of air moving at idle and low speeds.