EDIT: So I've edited this a few times now. Slutty, you were either drunk or having a brainfart when stating that was the biggest pile of crap you've read in a while.
So....tell me about this venturi effect you're talking about. You're basically stating that when towing a Superjet, the water being forced through the jet pump will in fact extract water from the cooling circuits.
When the engine runs and the impeller forces water through the pump, the cooling circuit works normally, right? So tell me...at which point does the cooling flow reverse direction?
What exactly is the difference between forced waterflow through the pump due to impeller rotation and forced waterflow due to towing?
I can only speak from experience for the four Superjets that I regularly work on, but I have an inkling of an idea that yours is not exempt from the laws of physics either.
If you tow a Superjet fast enough for long enough, the exhaust/waterbox will fill with water to the point of introducing water to the engine.
This is true for most any PWC out there.
It can be avoided by a) towing slow, b) towing short distances, or c) pinching off the cooling inlet line.
Unless you got some clown cooling system, I am right.
So...if you're still insisting on this being a pile of crap, let's bet money on it. It would be easy cash for me. :haha:
PS Water doesn't have to fill the cylinders, they're already full. If you tow fast enough, you will indeed have some small flow through the pisser. In most cases, the stinger water outlet is lower, so more flow will go there. That's why you don't see much, if any, from the pisser.
= water in the cylinders.