On my old 235, I wanted to keep the portion of the road draft tube with the filler cap for adding oil so we just sawed off the down tube. Welded a plate to this new side hole and drilled and tapped for an elbow to which the PCV valve connects. Also was told to use a PCV valve for an engine with about same displacement so I got one for and inline 250.
I believe the PCV valve helps reduce oil leaks by keeping a slight vacuum vs pressure in the crank case, fewer spots on my concrete now anyway.
Great how-to from Deve's 50 BTW.
