Seawater Impellors
05-05-2008, 06:55 AM
#1
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Join Date: Feb 2004
Location: MILLERSVILLE, MD.
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Seawater Impellors
How often does everyone change seawater impellors...every season?.....every other season?...I change mine annually, but I have friends that say that it is not necessary to change them each season...??????
05-05-2008, 06:59 AM
#2
21 and 42 footers
Platinum Member
I replace them every spring...housing and impeller. A buddy will pull his housing off and take the impeller out to leave un-bound for the winter then re-use it for a second year.
05-05-2008, 02:04 PM
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Every spring when I do all fluids. I had one engine out last month and just checking one water pump (had been changed 7 months ago) and found a blade had broken off and another cracked. If I have one engine out for some reason, I go ahead and change both water pumps then because its easier to get to. As expensive everything else is it is cheap insurance.
05-05-2008, 02:14 PM
#6
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Every other season. My most recent one had 120 hours on it and looked like new but it is worth the piece of mind.
05-05-2008, 02:16 PM
#7
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The first time I changed my Alpha impeller on my 1979 228 was in 2002. It still worked fine but the temp was starting to wander. So they can last a long time. I am sure newer ones won't last as long. Now I change my Bravo one every 2-3 years.
05-05-2008, 07:20 PM
#9
Ginger or Mary Ann?
Charter Member
I always get 2 yrs out of mine. 1 yr and still look good. 3 yrs ends up replacing one on the water. (twice now)
Just replaced them again last week for the 2 yr change. 1 missing vane, 1 was 1/2 tore.
Just replaced them again last week for the 2 yr change. 1 missing vane, 1 was 1/2 tore.
05-05-2008, 08:05 PM
#10
21 and 42 footers
Platinum Member
Ever wonder where the missing vane went???? Probably hung up in the oil cooler.
