so your trying to turn a vertical shaft engine into a horizontal shaft engine?
you will have the same prob. oil starvation.
the pic isnt helping much. it looks like the one label "vertical engine on side" is horizontal on its side... if the engine on the left is a true vertical shaft engine?
put an indicator of where the shaft actually is and it would make sense, as it doesnt really matter where the head is.
but whatever you mean, you need to change some internal parts to make a vert-shaft work as a horizontal, or a horizontal work as a vertical.