crack near water pump

[Frankiea87]

hey guys this is a 1987 mercrusier alpha one drive.. i removed the waterpump this week and in the process of prying the old one out i had the screw driver between the plastic of the pump and the (metal?) of the drive and it cracked a little bit.. not much i would say about a 1/8 of a inch deep by 1/4 in long.. i was wondering if this is going to be a problem with sealing the water pump housing.. should this be welded back? or not a problem? i know theres a bunch of gaskets for the water pump so anyone have any suggestions? attached are a few pics . not the best but hopefully you can make it out. thanks guys

 

[Frankiea87]

Re: crack near water pump

one more pic...

 

[Bt Doctur]

Re: crack near water pump

That is the suction side of the pump and if not properly sealed will allow exaust gas to be sucked into the pump and create a hi speed overheat condition.

 

[Frankiea87]

Re: crack near water pump

That is the suction side of the pump and if not properly sealed will allow exaust gas to be sucked into the pump and create a hi speed overheat condition.

so what do u think? a welding job? or need new lower unit?

 

[Bt Doctur]

Re: crack near water pump

From what I can see ,there is considerable corrosion in the gasket area now but the picture quality needs inprovement. Might try photobucket.com. It`s free.

 

[Frankiea87]

Re: crack near water pump

From what I can see ,there is considerable corrosion in the gasket area now but the picture quality needs inprovement. Might try photobucket.com. It`s free.

yea theres a lot of corrosion... .so what do u think? need new drive? or can i sand it all down and paint it? or any options? can i weld that crack?

 

[Bondo]

Re: crack near water pump

can i weld that crack?

Ayuh,... I doubt it's even Weldable, being such a small thin spot...And the corrosion factor...
You might try building it up with an epoxy putty...

 

[zbnutcase]

Re: crack near water pump

I'm with Bond-o on that one, Marine-Tex would work better with that much corrosion. 'nutcase

 

[Frankiea87]

Re: crack near water pump

hey guys i brought it to the marine shop around here and guy told me to use epoxy also... just tried it and it drys in about 5 minutes... i came back about 20 minutes later and its hard as a rock... im just going to sand it down a little to make it smooth and install the water pump ..ill post pics... thanks for all your responses

 

[Gary H NC]

Re: crack near water pump

JB Weld would have done a good job on that.Much stronger than regular epoxy.
As long as it seals it should be good to go....