Can I fix it?

[rooster86]

I broke a hole in my intake manifold right behind carb. Was a protrusion on the manifold I guess to prevent the shift linkage pin from jumping off. /well I broke it off and am left with a hole that leaks air and fuel when running therefor keeping me off the water for obvious reasons. This really bites!!! Can this piece be welded? I believe it is cast aluminum. is there a product that I can use to do it myself? Where can I locate a parted out motor? Mariner Magnum 40 hp. I think late 80's. Any help or Ideas would be helpful. I don't have a whole lot of money and am fairly new to this game.

 

[turbinedoctor]

Re: Can I fix it?

I don't know your engine well at all but I will say to be very careful if you are thinking about just replacing the intake. The blocks and intakes for the inlines are bore drilled for the crankshaft as one unit and it is not advisable to swap parts.

 

[rooster86]

Re: Can I fix it?

Wow thanks for that!!! I will be sure to look into this first.

 

[j_martin]

Re: Can I fix it?

Duct tape

or JB weld.

 

[Chris1956]

Re: Can I fix it?

Rooster, Cast aluminum can be hard to weld. I recommend you use some MarineTex on it.

Remove the piece and clean it well with acetone, inside and out. Now rough it up on the outside with sandpaper down to bare metal 4 times the size of the hole, and sand the sides of the hole as well. More acetone to get all oil and paint off. Put some tape in the inside of the crankcase cover to form the inside wall. Now spread some catalyzed putty filling the hole and overlaping the hole by 1/2 the diameter of the hole. Now work a piece of fiberglass cloth into the putty. Now a second layer of putty, and let her harden. That should hold for the life of the motor.

 

[rooster86]

Re: Can I fix it?

Rooster, Cast aluminum can be hard to weld. I recommend you use some MarineTex on it.

Remove the piece and clean it well with acetone, inside and out. Now rough it up on the outside with sandpaper down to bare metal 4 times the size of the hole, and sand the sides of the hole as well. More acetone to get all oil and paint off. Put some tape in the inside of the crankcase cover to form the inside wall. Now spread some catalyzed putty filling the hole and overlaping the hole by 1/2 the diameter of the hole. Now work a piece of fiberglass cloth into the putty. Now a second layer of putty, and let her harden. That should hold for the life of the motor.

Chris1956, Thank you for the tip. I am going to try it.