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twisted
Joined: 30 Mar 2014
Posts: 11
Location: whitecourt
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 Posted: Tue Jul 29, 2014 9:51 am Post subject: Zz4 impeller help |
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| Hey guys, I have a 19ft tunnel with a zz4, I trying to reach 5200-5400rpm what impeller is recommended I had a aluminum "a" impeller that came with the boat it ran 4200, I have had a shaved and balanced steel impeller unsure of what cut that brought me up to 4900. Any help would be greatly appreciated. Thanks in advance |
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WILSON
Joined: 17 Jun 2005
Posts: 352
Location: Mexico City
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| Posted: Wed Jul 30, 2014 9:45 am Post subject: |
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I have a similar setup (20' tunnel)
I run 5100 RPMs with a B impeller. In order to get to 5400 RPMs you will have to go to a C.
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Wisdom chases me, but I´m faster |
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WILSON
Joined: 17 Jun 2005
Posts: 352
Location: Mexico City
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| Posted: Wed Jul 30, 2014 9:49 am Post subject: |
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And, if you do plan to run continuously at 5000 RPM or more, aluminum impellers are no good. You need a steel impeller.
Air bubbles that go through the pump (cavitation) wear out the aluminum impeller very fast.
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Wisdom chases me, but I´m faster |
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