After fixing an intake manifold leak, my new re-build is settling in, but I have a sump question.
The rebuilder has changed the sump on this '46 Chief. Previously, the sump had a somewhat rounded face, with an elbow near the top that connected to the return line to the cast iron pump. The screws that attached the sump to the lower-end were recessed into this face.
Now the sump face is flat. The screws that attach it to the lower end seat flush on the face, and the return elbow comes out of the bottom of the sump face.
If I let the bike idle on the sidestand, it starts wet-sumping, smoking, blowing oil out of the exhaust, and no oil comes out of the return line in the tank. If I hold the bike up vertical, off the side stand, I get a huge amount of oil from the return line and it starts pumping OK. This didn't used to be a problem. Any idea why the rebuilder would have made this change? Are there advantages to the newer setup? This bike doesn't have a center stand, and its kind of a pain to always have to hold it vertical after starting.
Thanks for any feedback,