do mgb's get block freeze out plug leaks often? Not due to freezing coolant or rusting out.
2 different block freeze out plugs developed leaks on a motor that was rebuilt at a shop fairly recently. The freeze out Plugs were new at that time. I replaced the plugs myself with ones ordered from Victoria British using Permatex #1 sealant on their edges & walloped them fairly hard with a big ball piene hammer until they were dented inward slightly. So far no leaks after a few hours of running.