They recommend gray for machine repairs. I’m guessing the smallest size would be enough. I’d grind a vee in the crack and drill the end. Clean it with acetone. Jerry says use a piece of sandpaper pressed over it to mimic the texture of the cast iron.


Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.