Originally Posted by jeff652
I had one with a hairline crack. I asked here if it could be TIG welded and got laughed at. Apparently oil soaked magnesium is not as easy to weld as aluminum . . .
Could be done, but just isn't worth it unless the welder's time is free. The thing would need to be thoroughly cleaned, the blasted, then the crack ground completely to eliminate all the junk caught in it and expose the whole thing. It would need to be V'ed out so there was plenty of room to sink a good weld, then of course the actual welding. Probably 5 - 6 hours.
I have a cracked Insight pan I've been meaning to weld up for a while, just to see if I can. On the long list of projects though.