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Water pumps
Does anyone have tech data on mechanical water pumps. Specifically flow rates at different RPM's. How much an advantage over stock with an aftermarket "High Flow"?
All the electric pumps advertise flow in GPM (they don't say at what pressure). I'm trying to answer some questions about pully drive ratios, rpm's, flow rates, and pressure. Thanks, Steve |
Interesting question. The electric flow rates are what they are.
The driven pump rate will always depend on drive ratio. Dave |
Originally Posted by oldandtired
Interesting question. The electric flow rates are what they are.
The driven pump rate will always depend on drive ratio. Dave And RPM..... |
I found this on Stewart's site. Interesting. They are both "High Flow" pumps. An electric pump will work well for street cruising between 2000 and 2500 rpm, but maybe not at sustained high rpm. At the drag strip I think an electric is by far better.
I am certain at high rpm with high flow there would also be higher pressure (good thing). Pully ratio would be nice down low, but with a penalty up high. You can see where the numbers go: Flow in GPM (Gallons Per Minute) RPM Competitors Pump Stewart Stage 1 1000 17 18 1500 25 32 2000 34 42 2500 42 55 3000 51 65 3500 59 77 4000 68 90 4500 76 101 5000 85 112 5500 93 122 6000 102 132 6500 110 138 7000 119 148 7500 127 157 8000 139 158 Their site is a good read: http://www.stewartcomponents.com/Tech_Tips.htm Steve |
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electric pumps will always be the same since the engine is not driving it.
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