I'd weld it. Find the best kind of stick/wire for cast iron, use the engine to pre-heat and slow the cooling process. Couldn't get to the back side, of course, but oh well. If it doesn't work, I'd be no worse off and I didn't waste a lot of time, money, or effort on said failure. If it worked, I'd be laughing.
No welder? No money or skills to replace it? yeah, go for the JB weld.
|