Originally Posted by
Martin-Hadland
A hairline crack from the thread to the water jacket isn't uncommon to find when the head is removed, if its a 200 block then it can be saved by long studding, I've lost count of the amount of times I've done this over the years and its completely successful with no problems even on high power engines.
You are still working round the fact that the part failed.
The fix is to modify the original part to stop it cracking in the first place.
I have done several of these and non have then presented any cracks post mods.
A crack is a crack. The part has still failed.