Hello Otto,
I have already change it over from the down draft tube and have it running over to the exhaust port on the exhaust side where the old vacum wiper would go.
I have a 1960 235. My draft tube is sealed off with the right pcv valve. And the valve cover has the normal cap that has the built in filter from factor.

on the newer 230-250 1963 and up they show the PCV valve on top of valve cover and then going into the top of the manifold, then a fresh air tube from air cleaner feeding back io the other end of valve cover. My question is why can't a person seal of draft tube and copy the 250 style I do not understand the machanics of gas precess of the crankcase.

thanks


1955 second series 3200