Hopefully, this will be my last question on this engine. I have the motor mounted inverted. So, the vent line hose barb is pointing straight up. If I run a piece of fuel line from the barb, out the bottom of the plane, it will be about 6-7" long and make a 180 degree turn. Is it ok to run the vent line like this? I understand that "some" oil will run out of the "vent" line. If this is correct, how does it make it's way out of the engine? Crankcase pressure pushes it up and over the hump, or do I need to do a few rolls before landing[X(]? LOL
You guys/gals have helped me alot in the past.
Thanks

It will be fine like that. As long as the line doesn't kink, crankcase pressure will be sufficient to drain excess oil through the line even if it makes a loop. The .72 also has a vent in that location, and mine is inverted. No problems.