Bullet Whisperer actually built my engine, it's based on a Indian Bullet bottom end (E/S crankcases!), but with a steel con-rod and needle roller big-end. I don't think there is a pressure relief valve in the crankshaft on this one(?), but the needle roller big-end bearing should let oil escape from the holes in the crank pin more freely. Same thing on the rocker side, there's no pressure release valve at the base of the rocker feed line, but again, the needle roller bearings should offer less resistance to the oil flow, and B.W. has drilled extra pressure relief holes in the rockers and slotted the thrust washers to free up the oil flow even further.
Photo: B.W.These and some other useful bits here (note: Hitchcocks' has these rockers for UK customers too now):
http://enfieldracing.com/page/28582-EnfieldRef the rocker oil feed line on the scrambler, I had a BSA B40 which also had an external rocker feed line, I replaced part of the 3/16" copper tube with a length of translucent nylon hose of the correct bore so that I could also do a visual check on the rocker feed oil supply, that never caused any problems.
A.