Another water pump question...

[Santo]

What are the pros and cons when it comes to an electrical waterpump vs. a mechanical one...

 

[MarkOfDeath]

if your in to performance you get like 6 to 12 hp and at the track you can run the pump while your car is off causing it to cool down very fast for the next pass

 

[94m5]

if your in to performance you get like 6 to 12 hp and at the track you can run the pump while your car is off causing it to cool down very fast for the next pass

This is true......but then again, do you want an electric motor seizing up in the middle of rush hour? I've seen it happen to a few of my buddies' Z-28's.
I've never been a fan of them, due to the wiring involved, but if it's your cup o' tea....


If your into drag racing, it would be good, because you can shut the engine down and leave the pump on to cool while you wait. Just a thought.




Mike

 

[driller]

A mechanical waterpump is literally wasting HP at anything beyond a stock geared cruising speed. More Hp is required from the pump with more RPMs but not necessarily more flow. Too much flow has the same effect as too little flow if the coolant leaves the radiator before enough heat is extracted. In severe cases too much rpms can cavitate the pump resulting in no flow.

With an electrical pump, the parasitic load is constant regardless of rpms as is the flow. The otherwise wasted HP is now HP available to the wheels.