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Old 03-31-2009, 07:00 PM   #11
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I know the Alphas are in the lower unit and, as previously stated, must be changed out of water. I am not sure about B3 pumps being $300. If so, they must be the bronze pumps. On the B2 the impeller casing is plastic or resin composite and the whole kit is about $50 +/- depending on how good a shopper you are. You can change the pump in the water. All you need to do is be sure to raise the inlet hose above the water line when you pull it off so it doesn't gravity feed into the bilge. I have changes out 3 to date and always do the impeller, case & o-ring at the same time.

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Twin 5.7 Mercruisers/Bravo 2
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Old 03-31-2009, 08:24 PM   #12

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Originally Posted by Ticamo
Seapuppy: do you change just the impeller or the entire housing for your Bravo III? I have been told that it is best to replace the entire housing because the old one may have worn grooves in it which would then not match the new impeller and could cause airation. A whole new housing is apparently about $300, however. :shock:

dang..just saw this ..somehow I missed this question..sorry...I just change the impeller at 300 hrs....but that depends on how the inside is...and what pump you have.....

if you have a full up metal pump housing..then just replacing the impeller is ok...


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