It is currently Thu Mar 28, 2024 10:03 am




Reply to topic  [ 14 posts ] 
 Custom Exhaust Build Questions 
Author Message
MMT Pro Member
User avatar

Joined: Thu Jan 27, 2011 4:22 pm
Posts: 260
Location: North East, Tx
Post Custom Exhaust Build Questions
Im looking into building an aftermarket exhaust. I have the tools/welders/and material at hand to use at my convenience. I was going to ask and see what the best thickness and best material to use would be? And what are some of the things i should steer away from and what i should look at doing? I plan on adding some sort of baffle in it, just unsure of the best way to approach it.

Any advise helps!
Thanks, Laiken

P.S.- I already have some plans and designs draw up and what i think ill like. No numbers and measurements yet, but ive got the time to take it piece by piece and build it as i go..

_________________
1750 DeadFowl Custom with a GTR 37EFI
Build Thread: http://www.mudmotortalk.com/mmt_v2/viewtopic.php?f=4&t=62923


Thu Sep 13, 2012 9:20 pm
Profile
MMT 1000 Club
User avatar

Joined: Wed Oct 07, 2009 8:18 pm
Posts: 4310
Post Re: Custom Exhaust Build Questions
I'm just about finished mine. I'm using 4"schedule 10 for the muffler. I have 1.5" SS 16ga tubing for headers. I also have them to slip fit like the MM to prevent cracking and give some room for thermal expansion. No baffles in mine. ComPletely open. I have two 1.5" outlets. My outlet pipe extends all the way inside the 4" until about 1/2" from the other side. Read that this helps with backfiring ( maybe it does, maybe it doesn't). Should have it all welded possibly this weekend.


Fri Sep 14, 2012 7:27 pm
Profile
MMT Pro Member
User avatar

Joined: Thu Jan 27, 2011 4:22 pm
Posts: 260
Location: North East, Tx
Post Re: Custom Exhaust Build Questions
awesome thats about how im setting mine up to prevent cracking. thanks for the input!

_________________
1750 DeadFowl Custom with a GTR 37EFI
Build Thread: http://www.mudmotortalk.com/mmt_v2/viewtopic.php?f=4&t=62923


Sat Sep 15, 2012 9:37 am
Profile
MMT Addict

Joined: Mon Nov 29, 2010 6:02 pm
Posts: 534
Location: louisiana
Post Re: Custom Exhaust Build Questions
Where r u purchasing the flange that bolts to the head?

_________________
gtr35 gt 1854 / w gatorglide
12 ft 11hp longtail
14 ft 10 hp longtail
Merc 225hp TR20


Sat Sep 15, 2012 10:16 am
Profile WWW
MMT 1000 Club
User avatar

Joined: Wed Oct 07, 2009 8:18 pm
Posts: 4310
Post Re: Custom Exhaust Build Questions
Looked to purchase but didn't find any. Decided to cut my own out. Took the new gasket, traced it out on some SS 1/4" plate and cut it out with my plasma. Cleaned them up and ready to weld. 1.5" SS came from Columbia mandrel.


Sat Sep 15, 2012 12:05 pm
Profile
MMT Pro Member
User avatar

Joined: Thu Jan 27, 2011 4:22 pm
Posts: 260
Location: North East, Tx
Post Re: Custom Exhaust Build Questions
Yea I'm probably gunna cut my own out as well! Just seems easier to do if you have the tool and time to do it. Saves money too!

_________________
1750 DeadFowl Custom with a GTR 37EFI
Build Thread: http://www.mudmotortalk.com/mmt_v2/viewtopic.php?f=4&t=62923


Sat Sep 15, 2012 2:25 pm
Profile
MMT 1000 Club
User avatar

Joined: Sat Oct 29, 2011 10:28 am
Posts: 1068
Location: Tallahassee, Fl
Post Re: Custom Exhaust Build Questions
Well, how'd they turn out?

_________________
PRODRIVE 1860 CC
"Let the good times roll"
Luck??? The bassards don't stand a chance!


Sat Sep 15, 2012 8:14 pm
Profile
MMT Pro Member
User avatar

Joined: Thu Jan 27, 2011 4:22 pm
Posts: 260
Location: North East, Tx
Post Re: Custom Exhaust Build Questions
Haven't had time to get started yet, no rush to get it done but I am pretty anxious to start as soon as i can

_________________
1750 DeadFowl Custom with a GTR 37EFI
Build Thread: http://www.mudmotortalk.com/mmt_v2/viewtopic.php?f=4&t=62923


Sat Sep 15, 2012 9:21 pm
Profile
MMT 1000 Club
User avatar

Joined: Wed Oct 07, 2009 8:18 pm
Posts: 4310
Post Re: Custom Exhaust Build Questions
Me either, went to LSU game yesterday and didn't get to mess with it. Went out this morning to start and I'm out of Argon. Gonna have to wait till sometime this week to get another bottle. Will post some pics when done.


Sun Sep 16, 2012 9:11 am
Profile
MMT Addict

Joined: Mon Nov 29, 2010 6:02 pm
Posts: 534
Location: louisiana
Post Re: Custom Exhaust Build Questions
So your welding stainless with straight argon, how does it look and weld.

_________________
gtr35 gt 1854 / w gatorglide
12 ft 11hp longtail
14 ft 10 hp longtail
Merc 225hp TR20


Sun Sep 16, 2012 9:34 am
Profile WWW
MMT 1000 Club
User avatar

Joined: Wed Oct 07, 2009 8:18 pm
Posts: 4310
Post Re: Custom Exhaust Build Questions
Going to tig it. Tig welding SS I use 100% argon. Mig welding SS I use tri mix. Don't have any alloy wire for my mig and would rather tig it because it's thin wall pipe and tubing.


Sun Sep 16, 2012 11:58 am
Profile
MMT Addict

Joined: Mon Nov 29, 2010 6:02 pm
Posts: 534
Location: louisiana
Post Re: Custom Exhaust Build Questions
Gotcha

_________________
gtr35 gt 1854 / w gatorglide
12 ft 11hp longtail
14 ft 10 hp longtail
Merc 225hp TR20


Sun Sep 16, 2012 1:21 pm
Profile WWW
MMT Pro Member
User avatar

Joined: Thu Jul 21, 2011 7:39 am
Posts: 140
Post Re: Custom Exhaust Build Questions
Did you get a builder kit? 1.5 ss? I have been debating on building a custom or gutting a stock stainless. May try both and see what I like better.

Sent by my RAZR Maxx via Tapatalk


Sun Sep 16, 2012 1:42 pm
Profile
MMT 1000 Club
User avatar

Joined: Sat Oct 29, 2011 10:28 am
Posts: 1068
Location: Tallahassee, Fl
Post Re: Custom Exhaust Build Questions
From my experience having modified the stock stainless muffler and fixed it twice since then I'm starting to wonder if I should have just cut it off at the headers! I been chasing cracks almost everywhere there was a factory weld.

_________________
PRODRIVE 1860 CC
"Let the good times roll"
Luck??? The bassards don't stand a chance!


Sun Sep 16, 2012 2:19 pm
Profile
Display posts from previous:  Sort by  
Reply to topic   [ 14 posts ] 

Who is online

Users browsing this forum: No registered users and 243 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to: