How did I miss this thread?? So glad to see you got the case welded and are moving forward with the build!
I TIG weld professionally and always turn away repair work like this. Aluminum is porous and the amount of contaminants (oil etc) in an engine case make it almost impossible to get that classic "stack of dimes" look that most customers expect/demand. But, that certainly does not mean that the weld is not structurally sound. I'd say you have a pretty solid chance of that crack never causing a problem for you.
Looking forward to following the rest of your build!
Matt
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1978 SC Targa
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