In the proper frame you can take the engine apart. I guessed the measurements were to see if it goes in a WD16H frame? It's tight, the bolts come out but it won't lift over the valve springs.
So what was the reason for the question, Anton ? With a little more information, you could probably have received a much more detailed answer. There aren't many things that haven't been tried in the world of old motorcycles ! :grinning: