I feel like I have the worst luck when it comes to defects like these. Wanted to replace the valve steam seals and head gaskets pretty much preventatively, now found this. Pitting in the water jacket leading up to the hole near the cylinder. Block appears perfect except for this...
How would one go about fixing this?
A machine shop should be able to weld/machine that.
If you’re looking for a more “economical” fix. Maybe brazing but would still have some machine work to be done
Laser Weld and Machining. Block will Never Crack at that Point after