Hello Ben, do you mean the the the thread that is in the cylinder head, next to the hose outlet to the radiator. I do not think it is the block, it is only drain taps fitted down there. 3/8BSP rings a bell but I will have to check   Kind regards, Charles
28 May 2022 at 10:53 AM #7307
Charles Gough
Member

Hello Ben, do you mean the the the thread that is in the cylinder head, next to the hose outlet to the radiator. I do not think it is the block, it is only drain taps fitted down there. 3/8BSP rings a bell but I will have to check

 

Kind regards, Charles