That would be great to see the diagram. I want to understand how the pumped oil gets back to the tank and where the crankcase vent needs to be.This was actually one of the topics of conversation all that needs done, lol, cap em by heli arc a plug in place tap a oil port in the crankcase re-route the oil lines using an oil tank with vented cap. problem solved he is sending me a diagram to make sure all is done proper I will post it when I receive it. He said there was going to be some mods required to use these engines for this application , But well worth it in the end. They are capable (when built right) of more then 12 hp goverened. Lots of old school hop ups and mods if you want to take the time or spend the money.
These are some realy awesome bulletproof engines. You could prolly run them up to 3800-4000 or so intermittently with no probs. I know that the several ungoverned ones that I have owned have been revved pretty high.