Unless you ran that jet ski motor in an outlaw midget class, don't most organizations have rules about turbos and supercharging?

Dad..........First, I fabricated some bolt-in baffles that were placed in the Rosson/Hench oil pan. Keep the oil from sloshing so much and closer to the pickup. I then removed the valve cover emission control reeds and drilled a series of holes in the cover below them to vent the top of the motor better. Experience showed me that these motor place all the oil in the top end at high RPM with only the timing chain galley as a way to drain back to the pan. I then came up with a 1/2 hose system to tie the emission control outlet together, then tie them to a single 5/8" hose and route it to the rear right side of the oil pan so the excess top end oil would be forced through that system directly to the oil pickup area. You should see the different of oil levels through the site glass when I ran the motor just at 3500 rpm (on the stand) with this system versus without it. Before the oil would basically disappear with any appreciable rpm. Imagine the difference at 12,000 rpm. At least now, I am pretty sure I know where my oil is at high rpm's.......where it should be and not filling every cavity of the head or top end or even the tranny breather. I figured at best, when the motor was above 12,000 rpm there might be 3/4"-1" deep oil in the oil pan and a pickup that was about 1/2" off the bottom. So with a little slosh (bouncing, cornering, etc.).......sucking air. I tried various means of venting the motor but ended up with a pretty simple system. On the left side of the motor (alternator cover), I fabricated a 1" bolt-on stub to put a hose on it and run it up to my oil breather tank mounted on the fire wall. That tank lets any oil that should go up that far drain back to the vent on top of the tranny. My breather tank has a small K&N filter on it and is baffled inside. If it were full, it might hold a half of a quart of oil. At this point, no oil gets up there to speak of.....just oil fumes. Shane Rosson sent me a little tube that extends out of the motor case down into the oil pan that was overlooked when they manufactured the oil pans. This little vent/orifice is evidently cast into the original pan. I went ahead and put it in on my motor. I didn't on my son's motor. His motor incorporates the above described system minus that tube and he doesn't puke any oil either. Shane seems to think I could start pulling some of my concoctions off and not do some of the trivial stuff I have done. He might be right, but I don't have the guts yet. I will run with what I have. It may be crude. Definitely not Hi_Tech. So far it works and it's cheap.