I'm trying to repair a crack in an old (early 60's) cast iron engine block. The crack, about 2 inches long, is located in the cooling jacket on the exterior of the block between two freeze plugs. The problem is that the wall thickness of the block
observed in the crack varies from about 1/16 in at one end to about 1/4 inch at the other. I was planning to use a tig
welder, so I can vary the heat, with a tig-tectics 224 rod. Are there any suggestions as to methods or procedures that
should be used. Thanks.