Wrong Bloody Anodes!!

bnicov

Petty Officer 1st Class
Joined
May 25, 2009
Messages
348
After pulling off my drive yesterday and sanding down all of the corrosion, I replaced the anodes with Magnesium ones. The ones that were on there were deteriorated but weighed a heck of a lot more than the new ones which leads me to believe that they were either Zinc or Aluminum. I'm pretty peeved that all the corrosion didn't need to happen had I pulled them off and replaced them last year. The job is a bear, all the sanding and scraping but I'm making progress. At least the U joint bellows are in great shape and don't need to be done now. I'll leave them till next year. I have the new ones but don't have the time right now to pull off the gimbal pivot housing. All my spare time is going into the sanding and painting. At least the transom mount and gimbal pivot housing look halfway decent now, I'm heading outside in an hour or so to finish sanding and prepping the drive for paint. The gimbal bearing is fine as well as the engine alignment. So, the lesson learned is to take a really good look at the anodes to make sure they are the correct ones. I boat exclusively in fresh water so Magnesium is the best bet.
 

Thalasso

Commander
Joined
Jan 18, 2011
Messages
2,879
Re: Wrong Bloody Anodes!!

After pulling off my drive yesterday and sanding down all of the corrosion, I replaced the anodes with Magnesium ones. The ones that were on there were deteriorated but weighed a heck of a lot more than the new ones which leads me to believe that they were either Zinc or Aluminum. I'm pretty peeved that all the corrosion didn't need to happen had I pulled them off and replaced them last year. The job is a bear, all the sanding and scraping but I'm making progress. At least the U joint bellows are in great shape and don't need to be done now. I'll leave them till next year. I have the new ones but don't have the time right now to pull off the gimbal pivot housing. All my spare time is going into the sanding and painting. At least the transom mount and gimbal pivot housing look halfway decent now, I'm heading outside in an hour or so to finish sanding and prepping the drive for paint. The gimbal bearing is fine as well as the engine alignment. So, the lesson learned is to take a really good look at the anodes to make sure they are the correct ones. I boat exclusively in fresh water so Magnesium is the best bet.

Yep.
 

shortonvt

Cadet
Joined
Aug 9, 2011
Messages
27
Re: Wrong Bloody Anodes!!

I have a Doral sold and serviced on Lake Champlain in Vermont for 8 years before I bought it, and it had the original zinc anodes on it! Of course, they were in perfect condition, but the aluminum out drives were corroded as heck! I can't believe Doral, or at least the local dealer, didn't spec Magnesium anodes especially after seeing the advanced corrosion! It would have saved me lots of $$$$ removing, repainting, reinstalling, etc. Three of my friends' boats, again, sold as freshwater boats locally, had zincs too.
 
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