Lower Unit

[offdtop]

may want to research this for your application but..... I have some of these and I got them off ebay, and I can attest they work as advertised I even did the soda can as they did and filled a dime size hole but I do recommend practicing a bit.

http://www.youtube.com/watch?v=rSzpmP_vCE4

[olgreenboat]

may want to research this for your application but..... I have some of these and I got them off ebay, and I can attest they work as advertised I even did the soda can as they did and filled a dime size hole but I do recommend practicing a bit.

http://www.youtube.com/watch?v=rSzpmP_vCE4

Heat can make cast aluminum very brittle and you would need to remove the lower unit and strip it down so you dont melt any seals or plastic pieces. Looks like some good stuff though..