heat the crankcases with a propane torch and drive out all the beairngs first as well as remove the oil pump.
after that, take a picture from the inside too.
in orfer for the weld bead not to stick out, you or a machinist need to make a V groove into the material.
and like i said before, ask the welder to slowly heat the whole case so it doesnt distort, dont let him start welding without doing it.
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