I had a head stud break and had to remove the core plug. Unfortunately it was the 3rd stud from the front of the engine on the passenger side and the core plug was replaced with a large hex plug. After some digging around it seems it is a plug used in warmer climates where an engine block heater is not needed.
The plug broke when I was removing it so was wondering what my options are for replacement or what the normal course of action is when this part needs replacing ?
Does anyone know what thread this part has. I was in England last week and took it to a plumbing suppliers to see if I could get something that worked, but they said it was not a standard plumbing thread.