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post #16 of 43 Old 02-02-2014, 08:21 PM Thread Starter
underpowered
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got started on this. doing 2 1/2" in/out. muffler case size is 8"x14"x4". case is 11ga, baffles are 16 ga. went heavy on the case as it will undoubtedly come into contact with rocks and other offroad hindrances.

here is a few possibly baffle setups i am thinking of.

1.


2.


3.



1998 ZJ-- lowered a touch

2005 GMC 2500HD 496 C.I.

Fat Amy-1989 K5 blazer. Linked, lifted, 38.5's on won tons. Big Girls can play in the woods too.
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post #17 of 43 Old 02-03-2014, 07:31 AM
BESRK
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I'm kind of liking the first one.. that splits the flow and forces it into the 2 side baffles. However, I have no idea how that would affect actual exhaust gas flow.. nor soundwaves.

Here's where a CNC Plasma Table would be nice. It would allow you to make those 1/2 tube shapes, and position/cut them precisely where you want them in the top/bottom of the case.. so you could plug weld them.

I'm really looking forward to seeing/hearing the final product

'80 CJ5 w/AMC360, T176, D44 w/Detroit 4.56, RE 4" YJ lift and 35s..



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post #18 of 43 Old 02-03-2014, 01:55 PM
danielbuck
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looks like a fun project!


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post #19 of 43 Old 02-03-2014, 04:20 PM Thread Starter
underpowered
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Quote:
Originally Posted by BESRK View Post
I'm kind of liking the first one.. that splits the flow and forces it into the 2 side baffles. However, I have no idea how that would affect actual exhaust gas flow.. nor soundwaves.

Here's where a CNC Plasma Table would be nice. It would allow you to make those 1/2 tube shapes, and position/cut them precisely where you want them in the top/bottom of the case.. so you could plug weld them.

I'm really looking forward to seeing/hearing the final product
the first one is what i originally had in mind before ever starting this project. the other 2 were just thinking physically since i had the parts in hand to see what other possibilities i could come up with.

And i am slowly but surely collecting parts for one. it is next on the big things to buy list. buying the plasma in the next couple months, already have a computer with up to date copies of Mach 3 and mastercam. it would certainly be much easier that way.

1998 ZJ-- lowered a touch

2005 GMC 2500HD 496 C.I.

Fat Amy-1989 K5 blazer. Linked, lifted, 38.5's on won tons. Big Girls can play in the woods too.
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post #20 of 43 Old 02-04-2014, 05:27 PM Thread Starter
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possibly make it more of a true two chamber design.



thinking i am gonna roll with this setup and measure it all out and weld in place tomorrow.

1998 ZJ-- lowered a touch

2005 GMC 2500HD 496 C.I.

Fat Amy-1989 K5 blazer. Linked, lifted, 38.5's on won tons. Big Girls can play in the woods too.
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post #21 of 43 Old 02-04-2014, 06:25 PM
tjcj
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Nice idea. Just thinking out load here but couldn't you tack the shell of the muffler together with the baffles, then install it to hear it. If you don't like the sound cut the tacks and move around the baffles till you get the sound you wanted.

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post #22 of 43 Old 02-04-2014, 07:25 PM Thread Starter
underpowered
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that is an option but it may not get a true sound unless the case is pretty well sealed and almost fully welded.. I do know i am going to install it with clamps before i weld it just to be sure it is what i want.

1998 ZJ-- lowered a touch

2005 GMC 2500HD 496 C.I.

Fat Amy-1989 K5 blazer. Linked, lifted, 38.5's on won tons. Big Girls can play in the woods too.
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post #23 of 43 Old 02-04-2014, 08:44 PM
Lifted96ZJ
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The first design looks the best to me. Looks a lot like the Imco one chambers before Cherry Bomb bought them

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http://www.jeepforum.com/forum/f8/1973-cj5-trail-rig-hunting-rig-build-1403107/
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post #24 of 43 Old 02-11-2014, 05:51 PM Thread Starter
underpowered
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well here they are. just gotta build the headers so that i can get these installed and see how they are gonna work out.

Baffle set up


Case


built a 2nd identical to the first and added a bit of High temp paint

1998 ZJ-- lowered a touch

2005 GMC 2500HD 496 C.I.

Fat Amy-1989 K5 blazer. Linked, lifted, 38.5's on won tons. Big Girls can play in the woods too.
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post #25 of 43 Old 02-11-2014, 07:27 PM
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Great job, can't wait to hear what they sound like.

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post #26 of 43 Old 02-11-2014, 08:53 PM
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Well those turned out nice.

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post #27 of 43 Old 02-11-2014, 09:26 PM Thread Starter
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Thanks.


sadly it will probably be 2 weeks or so before i can hear them. Headers will be built next week, then it will probably be another week before i can get my hands on the exhaust bender to bend up the rest of the exhaust.

1998 ZJ-- lowered a touch

2005 GMC 2500HD 496 C.I.

Fat Amy-1989 K5 blazer. Linked, lifted, 38.5's on won tons. Big Girls can play in the woods too.
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post #28 of 43 Old 02-11-2014, 09:29 PM
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This is pretty neat. I didn't have any good advice to add but interested in the idea for sure. I'd like to see how it sounds!

84 xj 350tbi, sm465, 203/205, 60/70. links and other junk.
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post #29 of 43 Old 02-11-2014, 10:56 PM
andrewmacc
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I have a feeling they're gonna be freakin' loud. But if that's the goal, then perfect. The link I posted on the first page said his sounded like a deeper Flowmaster and flowed just as well on a flowmeter.

"Chilton's and Haynes are for brake jobs, oil changes and starting campfires." - CJ7-Tim
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post #30 of 43 Old 02-12-2014, 08:23 AM
BESRK
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I've been kind of wanting to build a Hot Rod sometime down the road.. maybe a rat rod of somesort. I will definately do my own mufflers now.. They can be loud.. as long as they eliminate the "cackle".

'80 CJ5 w/AMC360, T176, D44 w/Detroit 4.56, RE 4" YJ lift and 35s..



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