4c gasser
Engines were Enyas a 90 and a couple of 120s.
An oiling system is all about keeping these engines alive. Think about it, they are lubed by blow-by and use a glow fuel with 17-20%oil. When you go to gas you automatical use 1/2 the fuel and oil, even at 20% gas/oil you have about half the oil in the bottom end. If you go to 50-1 fuel you must lube the bottom end or else boom.
There is a normal style Walbro carb for 4c engines. It pumps from the intake pulse not the crank case. WT456 6.5mm venturi