Reply To: Jap 55 twin stationary engine

[davidbliss]

Most likely awkward and would be Whit-worth but like earlier post measure the AF size to give both imperial and metric should be something to fit, I have old sockets and fit exactly, oddly new ones are a bit loose although marked the same and some marked with two sizes they fit, well they may fit one size but its ether going to be tight or loose, 3/4 inch whit roughly the same as 24mm but if correct the whit-worth should be a tight fit but made to fit 24mm so loose on the imperial size, typical of that will do engineering today.