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Kirby
MMT Pro Member
Joined: Thu Oct 08, 2009 6:37 pm Posts: 99 Location: E. Oklahoma
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 building my own exhaust
Ok I've got the stainless pipe and access to a tig welder, going to attemt to fab my own dual exhaust. Just not sure what to do to the inside for back pressure and flow. was woundering if anyone has done this and could give suggestions.
_________________ Boomer Sooner!
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Sun Oct 11, 2009 1:18 pm |
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deltaduckmaster
MMT Sponsor
Joined: Tue Jan 13, 2009 7:07 pm Posts: 16608
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 Re: building my own exhaust
_________________ 17x48 extreme stage 2 GTR 20X60 DUAL RIG BOWFISHING ADDITION http://www.scalesandtailsbowfishing.com
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Sun Oct 11, 2009 1:34 pm |
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Kirby
MMT Pro Member
Joined: Thu Oct 08, 2009 6:37 pm Posts: 99 Location: E. Oklahoma
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 Re: building my own exhaust
thats funny! was thinking about capping off the pipe coming off the flange, drilling holes in the side, then welding a larger pipe over that
_________________ Boomer Sooner!
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Sun Oct 11, 2009 1:43 pm |
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BradS
MMT 1000 Club
Joined: Wed Jan 14, 2009 5:23 am Posts: 4514 Location: Lafayette, La
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 Re: building my own exhaust
You dont want "backpressure" What you want is scavaging. This means that when the exhaust starts flowing it kinda starts sucking it out of the engine.
If the exhaust is to big it will not allow for the scavaging process.
At least this is my understanding of how it works
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Tue Oct 13, 2009 9:15 am |
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rebbeer
MMT Pro Member
Joined: Thu Feb 05, 2009 7:39 pm Posts: 417 Location: Lafayette, LA
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 Re: building my own exhaust
Here's what I put in mine. Just regular old household fiberglass insulation. It's just wrapped around the pipe with a bunch of holes in it. They sound pretty darn good.
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_________________ 35 hp CDI MB HD Sport pushing a 17'6" Uncle J custom bateau
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Tue Oct 13, 2009 10:35 am |
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Kirby
MMT Pro Member
Joined: Thu Oct 08, 2009 6:37 pm Posts: 99 Location: E. Oklahoma
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 Re: building my own exhaust
That looks good! would like to hear em.
_________________ Boomer Sooner!
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Tue Oct 13, 2009 11:20 am |
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puddlejumper7
MMT Member
Joined: Wed Jul 15, 2009 7:48 pm Posts: 19 Location: SETX
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 Re: building my own exhaust
Could you use glass packs off of a truck to put on mud motor? Just wondering if that would mess the performance of the motor up any?
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Tue Oct 13, 2009 1:02 pm |
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Kirby
MMT Pro Member
Joined: Thu Oct 08, 2009 6:37 pm Posts: 99 Location: E. Oklahoma
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 Re: building my own exhaust
I thoght about trying that too, but have this ss pipe and wanted to make my own. mostly to save $$$
_________________ Boomer Sooner!
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Tue Oct 13, 2009 1:08 pm |
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b_coonass
MMT 1000 Club
Joined: Thu Mar 26, 2009 2:08 pm Posts: 1229 Location: morgan city, louisiana
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 Re: building my own exhaust
just use your stock muffler an cap off the baffler whole an then put a pipe on each side!
_________________ 36hp Pro-Drive with EVT exhaust pushin a 17x42 custom skiff
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Tue Oct 13, 2009 1:56 pm |
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banded-mallard
MMT 1000 Club
Joined: Wed Oct 07, 2009 8:18 pm Posts: 4310
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 Re: building my own exhaust
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Tue Oct 13, 2009 5:55 pm |
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b_coonass
MMT 1000 Club
Joined: Thu Mar 26, 2009 2:08 pm Posts: 1229 Location: morgan city, louisiana
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 Re: building my own exhaust
yea, it does give it a better sound! it doesn't sound like an EVT or anything but it sounds better!.
_________________ 36hp Pro-Drive with EVT exhaust pushin a 17x42 custom skiff
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Tue Oct 13, 2009 5:58 pm |
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