69 evinrude - will damaged gearcase hold oil? possible fixes?

69_evinrude

Cadet
Joined
Feb 2, 2017
Messages
20
Hey guys. Any chance this damaged gearcase will hold oil? Any suggestions for possible fixes?

Thanks.

gearcase_bottom.jpg

gearcase_top.jpg
 

F_R

Supreme Mariner
Joined
Jul 7, 2006
Messages
28,226
You might get lucky on the skeg portion, if internal pressure doesn't pooch the spaghetti out, but those gouges on the upper portion are a killer unless you figure a way to fill them in. I suggest Marine Tex to fill them. The skeg portion could be fixed by welding, then re-milling the groove.
 

nccajun

Recruit
Joined
Feb 3, 2017
Messages
3
I think it is fixable.I would thoroughly clean it and get it Tig welded by someone good on aluminum.Would clean up groove on a vertical mill if possible and on upper section which is flat I would file and sand to blend in.If not possible to have done I believe that jb weld still makes a compound for aluminum that I have used with much success on outboards.Got to clean with plenty of acetone and alot of tedious handwork with various shapes of files.Just my 2 cents worth.Best of luck,see no problem repairing this!
 

boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Agree with F_R on the use of Marine Tex. Have used it over the years and had good luck with it. The gray stuff that is, not the white.
 

oldboat1

Fleet Admiral
Joined
Apr 3, 2002
Messages
9,612
my nickel's worth: think welding is always best but not wouldn't hesitate to try Marine Tex. It's been a while, but I've also had good success with West System epoxy thickened with aluminum powder -- recommend that if you have any on hand. (Expensive for a small repair -- wouldn't go out and buy it for just that, but good to have around the shop.)

Whatever your fix, I would pressure and vacuum test the gear case before refilling. Not much pressure (maybe 8 or 10 psi).
 

racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
38,802
Aluminum soldering works well in this case.------------Does not melt the " parent metal " and therefor no distortion.------------One such product is ---LUMIWELD----and I first used that about 35 years ago.
 

69_evinrude

Cadet
Joined
Feb 2, 2017
Messages
20
Update:

Found a welding shop to fix the skeg and they did a good job. For the other half, I filed the raised edges, filled in the grooves with Marine Tex, and then lightly sanded. Certainly doesn't look pretty, but it's smooth, hard, and flat, so I'm gonna go with it. Thanks again for the info.


skeg_fix.jpg

upper_half_fix.jpg
 
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