Home made FAE fresh air exhaust?

[icemanftr]

Anyone tried to fab their own FAE out of pvc or abs? Hard to come up with the 5-600 for aftermarket and priced pipe out at Lowes and figured I could make one for about $25. Or even mock one up and go to exhaust shop and have one made out off SS pipe to match my mock.


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[mmandley]

Trayson made one and it didn't work out.

Issues you will run into is mounting to the platform. You have to get it mounted in the cross section or it will come off. Another concern in the down pipe. It can't be just a round pipe, too much drag and it week effect the waves.

I think you would be better to use metal piping and rubber connects with a similar downpipe.

Careful though because I think FAE is a patent item.

[mikenehrkorn]

Careful though because I think FAE is a patent item.

I think you are safe if its just for self use, but if you start trying to sell it to others that is another story.

[Fastest1]

All I know is mine is quiet!


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[sivs1]

I made one, love it.

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[jmvotto]

pictures please

[trayson]

Trayson made one and it didn't work out.

I made one for my Supra. my first generation model was held on with pipe strapping. I had a few issues:

1) I had the angles and the Z-length measurement wrong and it made a rooster tail that really messed with the wave
2) I had used heat to shape the PVC downpipe to a more narrow profile, but the heat of the exhaust combined with the force exerted on it actually warped my downpipe.
3) Because I had the wrong angles/length of some of my piping, one of the pieces of metal strapping didn't hold and the assembly started to come off the boat

None of these problems were insurmountable. And I'm not totally surprised that on my "Version 1" that it wasn't a slam dunk success. But like mentioned above, I had maybe $25 into it. While it was on and working, the sound benefit was AMAZING.

However, I ultimately sold that boat and moved on to my XLV. with a new boat, came a new list of projects and there were a ton of other things that took priority on my wish list over the homebrew FAE.

This winter I intend to tackle the project again and have sourced a lot of the parts already. On my Supra, I went with PVC because it's supposedly more resistant to UV rays, but on the XLV I intend on using ABS because it's thicker and because I think black looks better than white pipe.

Bottom line is that yeah, I'll make another one eventually, but other projects have taken priority for now.

[5:00]

One thing I noticed on the SS FAE is that the heat from the exhaust dissipates very quickly through the metal. I have checked it a couple of times just to see how hot it would be to the touch. I had to get almost to the exhaust outlet on the boat for it to be too hot to hold. Within 6" of the boat's exhaust it was cool to the touch. There is a huge amount of heat dissipation through the metal.
Hopefully the ABS will be able to stand up to moreheat being that it won't conduct much.

[sivs1]

I only have pics without the platform on.

I added a bar across the platform supports that then helps hold this in place. I also added screws into the exhaust pipes coming out of the boat with washers to help give the straps something to grab onto.

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[trayson]

So you went from the elbows right into the Tee? I didn't have quite enough width to use that Home depot Tee that you have pictured. I had to get a narrower tee and will have to have straight pipe between my elbows and the tee.

But I am going to be going down a similar path...