>If I remember correctly, I believe that Ken Galander's high performance
>coolant pump has six blades. I am sure that it put a larger grunt factor
>on
>moving coolant since the shaft eventually sheared off. I also imagine that
>it uses a little extra horse power.
All,
The number of blades on the impellor is largely irrelevant given
the poor castings of the blade. All those imperfections on the blades
leads to cavitation, and I suggest this to be the largest problem
contributing to inefficient pumps.
I removed the stock impellor and spent some time filing and sanding
all the rough edges off the casting. Since doing this about 10 years
ago, the only time my e-fan is needed is when I delibrately idle the
motor in 90+ weather for more than 15 mins. Otherwise the temp.
needle seems stuck when the thermostat opens.
Shane Ingate, cool in Md.
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