Changing impeller
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- prowlersfish
- 2025 Gold Support
- Posts: 12724
- Joined: Sat Nov 05, 2005 6:56 pm
- Location: Lower Chesapeake Bay ,Va
Changing impeller
How often do you change Impellers ? Just change mine and the fixed a over heat on the boat next to mine (sail boat gen Gen-set ) So I was wondering how often you do yours
Boating is good for the soul
77/78 TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat
77/78 TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat

- The Dog House
- Active User
- Posts: 807
- Joined: Mon Jan 09, 2012 6:51 am
- Location: Bordentown, NJ
Re: Changing impeller
I'm interested to see what the results of this survey are. It's been three years since mine were replaced and I'll be replacing them this year. My boat is in fresh water, so that might increase the longevity.
1993 Sea Ray 200 Overnighter OB with 1993 Mercury 150 hp Outboard
1979 Starcraft 14' Rowboat with 2011 Mercury 9.9 hp Outboard
Former boat: 1971 Trojan F26
1979 Starcraft 14' Rowboat with 2011 Mercury 9.9 hp Outboard
Former boat: 1971 Trojan F26
Re: Changing impeller
I voted 3 years, because that is what I did on my old Mercruisers, but I would also like to see what most people do here. I had a rigid maintenance schedule that offered me the best in service coupled with balanced cost and work load. I am hoping to develop a similar plan for my Chryslers.
- prowlersfish
- 2025 Gold Support
- Posts: 12724
- Joined: Sat Nov 05, 2005 6:56 pm
- Location: Lower Chesapeake Bay ,Va
Re: Changing impeller
I use to inspect yearly ( the 2 out of 3 I could see) and replace every 3 years regardless . I was surprised this year to find 2 impellers in very poor condition going on year 3 ( been 2 1/2 years ) so I replaced all 3 . I also have replaced about a half dozen others so far this year in good to bad condition . One looked great pulling off the cover .But the center had spun so it would not pump water .
Boating is good for the soul
77/78 TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat
77/78 TROJAN F36 Conv.
6BTA Cummins diesels
Life is to short for a ugly boat

Re: Changing impeller
With the Mississippi mud and zebra muscles, at least every 2 years and I carry 2 spares on board.
Current Fleet:
2000 Carver 450 Voyager
1991 Thompson 21' Carerra Cuddy
1994 Scout 15'
2005 Caribe LCX9 dingy
1981 16' Hobicat
Former Owner - 1973 Trojan F-36 "Light and Variable"
2000 Carver 450 Voyager
1991 Thompson 21' Carerra Cuddy
1994 Scout 15'
2005 Caribe LCX9 dingy
1981 16' Hobicat
Former Owner - 1973 Trojan F-36 "Light and Variable"
Re: Changing impeller
I inspect every year. I also remove them for winter layup.
Dustin
78 F-32 Express Hard top twin 360s Abyss
1999 360 Express twin 7.4
Catawba Island, Ohio
78 F-32 Express Hard top twin 360s Abyss
1999 360 Express twin 7.4
Catawba Island, Ohio
Re: Changing impeller
Make that 0 years... I had a failed impeller right from the start.