|Topic Review (Newest First)|
|08-05-2010 11:45 PM|
|JiffyLube||I change out our Jabsco pump impeller once a year, and keep the old one as a spare if it looks good. I've heard that in a pinch a paper gasket can be made from a brown paper bag...sounds resonable to me.|
|08-05-2010 10:11 PM|
|mgmhead||So glad to read others have had negative experiences with the Globe impeller as I thought it was just me. Put a new Globe in the raw water pump and it failed to prime, took it out, checked everything, put it back in and still failed to prime. Pulled out a new black rubber Volvo branded impeller, installed and it primed right away. I'll not be buying Globe again.|
|08-04-2010 10:38 PM|
I change mine every 300 hours or 3 years which ever comes first. since I usually put around 100 hours per year it works out pretty good. I used to change every year (100 hrs ) but decided that its just a waste of money, but if it gives you some peace of mind to change every year it may be worth it to you.
|08-04-2010 10:12 PM|
I change mine yearly and keep the spares. I've yet to see one so bad that I trashed it. I do it more as a PM move than having the impeller go south at the worst possible time.
Some folks pull the plate off a couple times a year for a look-see but I don't think you can get a good look at the impeller condition that way, and by the time you get it out you might as well replace it.
I've yet to replace the cam though.
|08-04-2010 07:46 PM|
Reality is , I guess that it would be simple to modify a standard impellor cover to be as easily removeable but you are still stuck with the crappy paper gasket. Thats why I reckon its the gasket and the gasket housing design that makes this thing look the goods.
|08-04-2010 07:07 PM|
They also make changing the impeller a lot easier, especially if the impeller is in a difficult location, since you don't have to remove all four screws.
Originally Posted by tdw View Post
|08-04-2010 06:49 PM|
I'm in the change once a year camp and always keep a couple of the old ones on board just in case. Just seems to make sense, and as Maine says they are not all that expensive.
Does anyone have any experience with those quick change Speedseal impellor covers ? I figure their greatest advantage is that they use a much better, as in reusuable, gasket than those damn paper things.
|08-04-2010 02:44 PM|
Originally Posted by hbergold View Post
Just a heads up..
I've tried the Globe impellers but found them very problematic. Below are some quotes and photos from another forum. My failures were the center hub spinning free of the blue impeller. This was a tough one to trouble shoot as it looked fine. The next one the tolerances were off ever so slightly and she would not "prime".
Images courtesy P. Shed
Originally Posted by P. Shed
Originally Posted by Bottomscraper
Originally Posted by Ken J.
Just an FYI that the Globe impellers are NOT all they are CRACKED up to be..
I replace yearly... Engines are 15k my impeller is $16.00 or about the price of a 12 pack of decent beer..
|08-04-2010 01:53 PM|
Originally Posted by Cruisingdad View Post
Exactly correct. On the other hand, trying to back-wash the bits of a broken impellor vane out of a heat exchanger can be a serious PITA.
|08-04-2010 01:09 PM|
Stay away from blue impellers
Originally Posted by SVCetacea View Post
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