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  1. #1
    Cadet LTDan440's Avatar
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    Default How Often Do You Change Your Outdrive Impeller?

    Annually? Every 2 years? Ever?

    I changed mine last season (saltwater, OMC) and I was planning on leaving it through the rest of this season; should I plan on R&Ring for next year?
    1981 Glastron 18' BR
    2002 Angler 18' DC
    Old Town 16' canoe

  2. #2
    Moderator Bondo's Avatar
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    Default Re: How Often Do You Change Your Outdrive Impeller?

    Ayuh,...

    If I don't have an Overheat Issue,....

    Every couple or few years,... I have my drive Resealed,+ it's replaced then.....

    Btw,....
    There's No e in Old Town,.....

    See,........
    Any Grease is Better,..... Than No Grease at All.......

  3. #3
    Cadet LTDan440's Avatar
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    Default Re: How Often Do You Change Your Outdrive Impeller?

    noted

    the book recommends annually, that just seems a little excessive to me
    1981 Glastron 18' BR
    2002 Angler 18' DC
    Old Town 16' canoe

  4. #4
    Moderator Bondo's Avatar
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    Default Re: How Often Do You Change Your Outdrive Impeller?

    A bunch of Mopar musclecars
    Ayuh,.... I've got a Bunch of Canoes,...

    What "Book" you been readin',..??

    If the annual maintance is based on a hundred hour year,....
    That's reasonable....
    It Sandy conditions are common,...
    That's reasonable....

    Bluewater boating in a Sweetwater sea,....
    I have no problems running 2, or 3 seasons,... Probably 100/ 150hrs....
    Any Grease is Better,..... Than No Grease at All.......

  5. #5
    Petty Officer 1st Class APPALOOSA2's Avatar
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    Default Re: How Often Do You Change Your Outdrive Impeller?

    I change mine every 5-8 years, but I watch gauges as I run the boat. After 7 years If water temp starts to run a little bit hotter I'll change it. I live in upstate NY and winter can be brutal so I take my lower unit off and put it on in the spring which saves the impeller from hardening to soon.

  6. #6
    Moderator achris's Avatar
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    Default Re: How Often Do You Change Your Outdrive Impeller?

    Checked annually, with the rest of the service, and replaced as needed. Got 7 years from my last impeller and it still looked like new.

    It also depends on which engine you're looking at.... The early Mercs had the high pressure/low volume impeller. Very stiff and if you didn't change it every 2 years, at the most, you'd get problems. The newer, 'floppy vane' pumps are great.. They don't even get damaged in sandy conditions.

    Observe and replace before it dies.... Pull the leg, every year and inspect the unis, gimbal bearing and impeller... That also means the the bolts are moved and re-greased and won't be seized solid when you really need to get them off.

    A little maintenance regularly is better than a big repair infrequently.

    Chris...........
    The world takes on a whole new perspective when viewed from 100' below...



    1972 Bertram 'Bahia Mar' 20
    2006 Mercruiser 4.3MPI (0W617679) w/Alpha 1 Gen II (0W829301)
    **
    Please don't send service questions in private messages. That's what the forum is for. Messages of thanks, always accepted.
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    Member of the month - April 2013. http://www.iboats.com/blog/achris-member-of-the-month/

  7. #7
    Cadet LTDan440's Avatar
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    Default Re: How Often Do You Change Your Outdrive Impeller?

    I've got a "white anchor" OMC 800, which after working out a few initial bugs, turned out to be a good outdrive and my temp guage has never gone over 180, even at WOT. Does anyone know if the OMC is a high volume/low pressure pump or high pressure/low volume?

    I think I read the annual recommendation in my very vague Clymer repair manual...

    Bondo, if you look at the green canoe on top of the Jeep in your picture and change it to red, I think thats my canoe. With gas prices the way they are this year, its spent a lot more time in the water than my boat.
    1981 Glastron 18' BR
    2002 Angler 18' DC
    Old Town 16' canoe

  8. #8
    Senior Chief Petty Officer
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    Default Re: How Often Do You Change Your Outdrive Impeller?

    I change mine every year. We have alot of sandy bottoms here and the rubber blades get chewed to bits after a season of pick up. I feel it better to err on the side of caution.

  9. #9
    Moderator Bondo's Avatar
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    Default Re: How Often Do You Change Your Outdrive Impeller?

    Bondo, if you look at the green canoe on top of the Jeep in your picture and change it to red, I think thats my canoe.
    Ayuh,....

    That's a Beautiful Boat,....

    The 1 in the picture is a first year intro of the Charles River model....
    I hated to sell it,... I love the Full curl of the bow,+ stren,..
    But the Sponsons on the sides made Me fall in Love with it....
    It looks like the wooden Old Towns of early last century.....

    That 1 is made of the cross-linked poly,...
    They also make'm in the Rolalex plastic, at almost 1/2 the weight of the cross-linked....
    Any Grease is Better,..... Than No Grease at All.......

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