Hi Aussitrev, sadly the female thread for the carburetor bolt is actually tapped into a moulded die portion of the engine block. I think it's kaput because even a helicoil wont be able to go there because the top section is broken off. Can you braze this alloy? I tried the "captive nut" idea with the epoxy that didn't work but brazing would be better.

Last edited by sparker; 06/01/15 01:11 AM.