What stops water from entering the engine block 97 challenger

[ondagaskiknass]

Hello all,

I'm just curious as to what prevents water from entering the engine block when the boat is in the water an not running.

Oh and I have a 1997 Seadoo Challenger

Thanks,

 

[ORION '95 Speedster]

Interesting question.

If you were to roll the boat over to the left, and then over to the right, you would get water in the engine from the exhaust system. Aside from that, if you let the boat sit long enough, the water in the exhaust can evaporate and make its way into the motor. As far as the water flowing into the motor by itself, I believe that the exhaust port from the engine sits above where the water is in the exhaust. So there is no way for it to enter the engine unless you turn the motor to the wrong side (tipping the boat over). It would be like sink full of water, what keeps the water from going back into the faucet? If you were to turn the building upside down, you would probably get some water back up into the faucet.

 

[snikwad003]

In my boat there is an elbow that goes above the water line before going into the second muffler. The seals around your exhaust outlets can leak, and that is a whole different way to get water in your motor. When your boat is being towed you must pinch the water line that feeds the cooling system or it can flood the exhaust and fill your engine with water. Also when being towed water can be forced up the outlet of the exhaust system and flood the engine, or if yours is the twin engine and you return on a single engine you must pinch the water line that feeds the cooling system on the non runner, even still you can flood the exhaust from the outlet. :cheers: