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duke36 · 04-09-2020, 10:33 PM

You may get a lot of responses and search the Forum, so perhaps await a few days. Cast iron is very tricky to weld and usually needs to be furnace heated . Heed advice above.. The block appears to be worn thru with not much metal thickness, not a crack which can be a candidate for metal stitching followed by overcoating with a professional grade epoxy such as Belzona. Some sources suggest that threaded pins used in stitching may leak but have no personal experience. I sealed a prior repair with JB marine weld, and it didn't hold up well to hot water migration.

04-09-2020, 10:33 PM	#8
duke36 Senior Member Join Date: Jun 2015 Posts: 1,414	Re: Model A cracked block You may get a lot of responses and search the Forum, so perhaps await a few days. Cast iron is very tricky to weld and usually needs to be furnace heated . Heed advice above.. The block appears to be worn thru with not much metal thickness, not a crack which can be a candidate for metal stitching followed by overcoating with a professional grade epoxy such as Belzona. Some sources suggest that threaded pins used in stitching may leak but have no personal experience. I sealed a prior repair with JB marine weld, and it didn't hold up well to hot water migration.