I am thinking that you could be confused with our 4 cylinder Durant model A-22 ('22-'26) those engines have the dipper/splash with a grapevine distributation system with very low residual pressure from a low volume external gear pump...Oil pressure at guage is 3-5 lbs (if you are lucky)
That part page is out of Leaside 1938 catalogue. Here's the Durant US counterpart.
Can't find anything on Google search showing the W4A / W5A engines giving info or exploded view. Perhaps a DMACer can point Mark in right direction where to get his hands oily on his pump.
Where Are You From? Ottawa Ont Canada
Do You own a car built by Durant? 1932 614 sedan made by Dominion Motors
Thank you Bill. I truly appreciate all of you. This is a new project for me. I rescued this car from an idiot who wanted to chop it up and make a rat rod out of it. s again you guys are amazing....Mark