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post #1 of 9 (permalink) Old 11-27-05, 02:16 PM Thread Starter
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Water Pump - Worth the $$$ ?

Is this worth the $$$$ ?

http://cgi.ebay.com.au/CAT-RACING-FO...QQcmdZViewItem

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post #2 of 9 (permalink) Old 11-27-05, 03:19 PM
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Re: Water Pump - Worth the $$$ ?

There was no mention of cavitation, which is the prime concern when purchsing a water pump.

I use pumps modified by John Bennet on my motors.
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post #3 of 9 (permalink) Old 11-28-05, 01:25 AM
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Re: Water Pump - Worth the $$$ ?

What does John do to his pumps and how much does he charge?
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post #4 of 9 (permalink) Old 11-28-05, 03:43 AM
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Re: Water Pump - Worth the $$$ ?

Quote:
Originally Posted by xb351coupe
these pumps are very good and dont cavitate at high revs. worth every cent. ask the guy for a photo of the other side and you will see for yourself.
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post #5 of 9 (permalink) Old 11-28-05, 01:12 PM
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Re: Water Pump - Worth the $$$ ?

Quote:
Originally Posted by azza
What does John do to his pumps and how much does he charge?
AZZA
He puts an impellor of his design onto a GMP pump. The impellors are specifically designed not to cavitate. I don't recall the price, but I thought it was fair.
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post #6 of 9 (permalink) Old 11-28-05, 03:54 PM
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Re: Water Pump - Worth the $$$ ?

Quote:
Originally Posted by xbgs351
He puts an impellor of his design onto a GMP pump. The impellors are specifically designed not to cavitate. I don't recall the price, but I thought it was fair.
Thanks mate i have a GMP on my new engine and wanted a CSI but could not afford it at the time.
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post #7 of 9 (permalink) Old 11-29-05, 07:13 PM Thread Starter
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Re: Water Pump - Worth the $$$ ?

Quote:
Originally Posted by xrglen
these pumps are very good and dont cavitate at high revs. worth every cent. ask the guy for a photo of the other side and you will see for yourself.
I'll ask for the pic....thanks

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post #8 of 9 (permalink) Old 12-11-05, 12:53 AM
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Re: Water Pump - Worth the $$$ ?

I bought a new alloy unit from John at Choice Radiators in WA. It had his own custom impellor fitted to remove any chance of cavitation, plus he'd ported the water passages for added flow.

I think it cost me about $250 and I still had to fit it myself. I thought it was quite expensive for what I was getting, considering the exact same unit without any modifications only cost $65. It does work well though.

If the unit on ebay has a similar custom impellor, then I think $165 is really good value.
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post #9 of 9 (permalink) Old 12-11-05, 06:45 AM
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Re: Water Pump - Worth the $$$ ?

Quote:
Die casting process with a steel mold eliminates casting porosity to a minimum.
This is not correct. The die or sand mold design as well as the pouring technique it what prevents porosity.

A CNC machined cast iron impeller? Curious that they would machine them out of cast iron.

It is also odd that the person who's auction this is didn't take a picture of the business end of the pump to show.

I have no familiarity with this pump but I do working with water pumps, CNC machining, and some casting. Those are just 3 red flags that popped up for me.
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