CUDACOX
Well-Known Member
Just wondering what people recommend for water pumps.I try to keep everything stock looking,and my 68 discharges on the drivers side so not too many pumps out there.Standard or High volume? What do you think? Thanks.
I would go high volume. You can't have too much flow.
Too much flow won't hurt you, too little will....
Craig
I remember reading somewhere that with too much flow, the coolant does not have enough time in the rad to cool down. I think there is a thread on this in forbbodies only.
I remember reading somewhere that with too much flow, the coolant does not have enough time in the rad to cool down.
A common misconception is that if coolant flows too quickly through the system, that it will not have time to cool properly. However the cooling system is a closed loop, so if you are keeping the coolant in the radiator longer to allow it to cool, you are also allowing it to stay in the engine longer, which increases coolant temperatures. Coolant in the engine will actually boil away from critical heat areas within the cooling system if not forced through the cooling system at a sufficiently high velocity. This situation is a common cause of so-called "hot spots", which can lead to failures.
Just wondering what people recommend for water pumps.I try to keep everything stock looking,and my 68 discharges on the drivers side so not too many pumps out there.Standard or High volume? What do you think? Thanks.
Everything I've read shows this to be an old wives tail. While "true" that the coolant has less time in the radiator to dissipate the heat, it also has less time in the engine to absorb that heat.
Pulled from another thread.
And then you also have to take into account that a high flow pump might suck the bottom hose closed easier, so a spring coil hose might be needed.
Just another possible detail to deal with.
* Thank You.Just to add to this....the fact that the thermostat controls coolant temperature by controlling coolant flow indicates that whenever there is sufficient airflow through a properly sized radiator, there is excess flow capacity available; otherwise, the thremostat could not manage temperature by opening further and allowing more flow. The only time that this is not adequate is when there is low airflow through the radiator; that is the one case where higher pressures to force more flow will be of use. But, as Del points out, a lot of that is dependent on impeller clearances.
And yes, a water pump is not a posittive displacement pump like an oil pump or Rootes type supercharger.
stock pump is plenty.
8 vane is used with small pulley,6 vane is used with large pulley to keep flow correct.
....spin too many blades too fast and you produce cavitation.