Edonis001,EDONIS001 said:i read around that the lsx water pump starts to overheat the motor cause it wont flow enough coolant to support 800rwhp. i believe it frees up about 10hp over on the other forum other guys have gone back to a belt driven pump cause the lsx pump wouldnt flow what they liked in there high hp cars.
Yeah...what he said. :rofl:RocketSled said:It may give you better performance because the engine temperature is better controlled, but it shouldn't give you much if anything in parasitic gains. The power it takes to turn the pump is the same whether driven mechanically or electrically. When you disconnect the pump from the serpentine belt and connect it to the alternator, the electrical load on the alternator goes up in proportion to the reduction in mechanical load.
Maybe the electric pump runs a little more efficiently. It probably presents a lower load than the mechanical pump at high RPM, since the electrical pump is constant RPM and it runs slower at peak engine RPM than the mechanical pump would.
But thermodynamics demand that it take the same power to do the same work, regardless of how the power is transmitted to the pump.
The one on my Trans Am has been going strong for 10 years. It's also 3 times easier to change than a stocker. :z:Resist said:Another thing to consider is the life span of the pump. It's much lower than that of the mechanical pump. Do you really want to be replacing the water pump every few years?