Fresh Air Exhaust

[SangerTom]

Has anyone put one of these on their boat - particularly a Mercruiser 350? Was thinking about it but of course want to know if it is good or not

 

[haulnazz15]

Re: Fresh Air Exhaust

WTH is a fresh-air exhaust?

 

[jesus94p]

Re: Fresh Air Exhaust

??? I would like to know what that is too

 

[legoman67]

Re: Fresh Air Exhaust

like a fresh("cold") air intake like cars have?

 

[Philster]

Re: Fresh Air Exhaust

Corsair Exhaust?

OR this:

http://www.freshairexhaust.com/

Which just diverts exhaust into the water on specialized ski boats, whose exhaust outlets sit above the waterline when on plane. It ensures the exhaust exits into the water when on plane.

It doesn't just turn down the outlets, it joins them and then drops the exhaust into one pipe which is always below water.

Dozens of pics all show inboard ski boats like this:

 

[SangerTom]

Re: Fresh Air Exhaust

That is the picture - they also have a video. My research says that its a good thing but its $475. I read an article which was a US Coast Guard review and it does the job - plus it reduces the engine noise so you can talk

Almost going with a yes - need a bit more info from someone who has it.

 

[haulnazz15]

Re: Fresh Air Exhaust

I guess I have to ask: why does anyone care if it exits into the water or not? If it's exhaust gas, it's gonna rise to the surface within a second anyhow, so if there's some sort of green motive behind it I don't see it. I'm sure it does lower exhaust volume, but I've never found it to be an issue on the few inboard ski boats I'm been on, but maybe their exhaust was still below the waterline on plane.

It just seems like one of those fixes for a problem that doesn't really exist.

 

[Guma]

Re: Fresh Air Exhaust

I guess I have to ask: why does anyone care if it exits into the water or not? If it's exhaust gas, it's gonna rise to the surface within a second anyhow, so if there's some sort of green motive behind it I don't see it. I'm sure it does lower exhaust volume, but I've never found it to be an issue on the few inboard ski boats I'm been on, but maybe their exhaust was still below the waterline on plane.

It just seems like one of those fixes for a problem that doesn't really exist.

The foremost reason is for wakesurfing. Since while wakesurfing you are going fairly slow (10 - 12 mph), the exhaust levels do not dissipate as fast. Wake9.com did a great podcast on the effects of Carbon Monoxide (CO) levels in and around the back of the boat. Using a CO counter they showed the differing levels of CO in the "ballast boy" seat, on the rear sundeck (think V-drives), on the swim platform, and right near the back of the boat, since wakesurfing the rider is very close to the boat.

Then they installed an FAE and the levels dropped off significantly. The reason for the study was because Calif, among other states, have thought of banning wakesurfing due to CO levels and the dangers it exposes the rider and passengers to.

It will also lover the exhaust noise, which some people like and some don't. Personal preference on that "note".