exhaust cooling

[wake155]

Can someone briefly explain why the exhaust must be cooled? Car exhaust systems are not cooled are they?

 

[griz400]

no, cars are not cooled by water, but, you dont sit on the exhaust manifold, if it wasnt cooled, there would be like a fire, about 5 minutes after you were on the lake, then the ski would sink, and you would have to dive for your beer

 

[ski-d00]

cars have quite a bit of open space under the hood and this is ventilated to the outside air, skis are not. it could be done but would require a ton of aluminum shielding and greatly increase the air flow using a blower fan that runs constantly. that heat has to go somewhere.

why not use the lake water, it's simple and cheaper.

 

[JFizzleJR]

cars have quite a bit of open space under the hood and this is ventilated to the outside air, skis are not. it could be done but would require a ton of aluminum shielding and greatly increase the air flow using a blower fan that runs constantly. that heat has to go somewhere.

why not use the lake water, it's simple and cheaper.

Some coolant and a nice heat exchanger works wonders, doesn't it? LOL

To the OP, your exhaust system will melt if it runs dry.

 

[Michael211_2000]

Can someone briefly explain why the exhaust must be cooled? Car exhaust systems are not cooled are they?

Automotive exhaust systems are air-cooled, your watercraft exhuast system is inside of a confined hull space with lots of rubber hoses and fiberglass and such running nearby... that why it needs water cooling to keep from melting down or starting a fire!

- Michael

 

[wake155]

Understood, thanks for all the replies!