No pics. I just jigged the pump in a milling machine and cut away. Every other vane until they were flush. Instead of 6 I ended up with 3. The impeller was cast and the vanes were full-length
I'd had pump theory while studying engineering, although we hadn't gone very deeply into it, and while I wasn't too sure about slowing the flow and improving cooling, I could see that it might be possible because the extra heat picked up would have more time to be removed in the radiator. The air flow would remain the same so there would be more heat removal. Several people in here have disputed that, I don't know for certain what the final result would be. Bottom line, though, is that coolant flow at low and crusing shouldn't be reduced.
The one potential problem I thought I might have was bearing or seal wear, but it never happened. As I still have it, that doesn't seem to be a problem. I probably put 40k miles on it.
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Rich
The real democratic American idea is, not that every man shall be on a level with every other man, but that every man shall have liberty to be what God made him, without hindrance.
Henry Ward Beecher
"The problem with socialism is that you eventually run out of other people's money." Margaret Thatcher
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