Z28 exhaust manifold crack opinion

[KevinW]

OK, sorry for the delay. Family stuff came 1st in priority

So I wanted to fill a hole in a riser for a blank. Here are the pics. Had some feed issues partway through, so some crappy welds. But good news, a cutoff wheel took the welds down with no issues.

Did a dollop of weld right on the cast surface (previously media blasted). Could not pry it off. Then did some grinding and smoothed out nice without any cracking that I could see. Did some chip hammering and it dented easy.

Then I filled the hole, no pre-heating of cooling. That amount of weld did not heat the part that much. Ground it smooth, easy-peesy

Next, will have to make a crack in a junk manifold, drill it and bevel and see how it goes.