What kind and size of thread?

Additional note. The thread size M14x1.25 is in fact the same exact thread specification as the NGK B8ES spark plugs; so feel free to jam a spark plug in your galley hole.:whistle:

tuxedotito wrote:

...jam a spark plug in your galley hole.:whistle:

:laugh: :laugh: :lol: :lol:

Someone needs to put an oil gauge on the end of a hollowed-out spark plug. That would look very interesting! :ohmy:

That is actually a good way to check the threads. If the plug fits, you know the thread size.

That would look sort of neato. Thank you for appreciating my humor; I see you also are person of culture and sophisitcation!