Just how would a guy go about figuring out how big the pulse is? Flatten a paper bag & put it over the hose & see how much it inflates it?

 If it was, the oil mist would never leave the hose and fresh air would never be ingested by the engine.


This is why I suggested a Y with reed valves. Long side exhales, short side inhales.

How much cooling do you guys think could be had by building a system that made it inhale fresh, ambient temp air instead of the hot blast it just exhaled?

Just that answer is all Im after, I know about the oil loss, seriously, what effect on cooling? Just a SWAG would do me fine.
I wonder how much Would it drive the efficiency down?


Reelthing: Why heck yea, about 650. The exhaust spits it all out a pretty small hole when the piston goes up, so if that hose isnt more restricted than the exhaust, then it oughta be spitting about 650 ccs.
That wadded up pot scrubber in the head cover is all that keeps it from being a straight shot, isnt it?

A valved filler plug replacement would do it. Id expect to see a big increase in lost oil, tho, because if it doesnt "inhale" from the same hole it "exhales", all the oil in the pathway will fail to be sucked back down.,
But, it would make a fun experiment.