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napajeep
03-04-2007, 12:31 AM
OK, I've got the long arms on the rear, now looking for a muffler. I've got a 3" converter and 3" tailpipe. For those of you that have heard these mufflers, which is the quietest inside (resonance)?

Dynomax Bullet
Moroso Spiral
Magnaflow round

All are round mufflers, but I'm looking for something fairly quiet.

Thanks.

LouisianaZJ
03-04-2007, 02:01 AM
i dont know about the other two byt the magna's round mufflers are LOUD on mustangs

BigDaveZJ
03-04-2007, 02:05 AM
I've got a MagnaFlow 14" oval body on mine, pretty loud. Pam has the 16" oval on hers and it's a little tamer. You can fit oval mufflers with long arms, just need a good exhaust shop.

ILikeMud
03-04-2007, 10:10 AM
Bullets are loud, same with the Mangaflow.

redzj
03-04-2007, 10:34 AM
I have a magnaflow cat and 14" Magnaflow oval and it is pretty loud, not a whole lot quieter than just the factory cat just sounds a little better.

jsteves
03-04-2007, 10:44 AM
I have a magnaflow oval, 14" Much quieter than my brothers flow 40, MUCH quieter.

Sudz
03-04-2007, 10:53 AM
i'm running this - sounds a little throaty when new (with my 4.0), but definitely mellowing with age - i like the sound now - installed this time last year

http://home.comcast.net/~ronhubert/hushpower.jpg



http://www.flowmastermufflers.com/hp2.html

got it here: http://www.performancepeddler.com/ - found him on ebay - he had the best price i could find at the time - i've bought a few things from him since - great to deal with - super fast shipping

napajeep
03-04-2007, 11:34 AM
Yeah, I was looking at the Hushpower, but they don't make it in 3". If I were running smaller diameter pipe, I would have gotten that one.

Any one ever hear a Dynomax Ultra Flow? They make that in a 4" round, 18" long version.

jsteves
03-04-2007, 01:14 PM
honestly, I think it would be harder to fit a longer muffler it there than a wider one, at least that is true with my clayton's.

BigDaveZJ
03-04-2007, 01:31 PM
honestly, I think it would be harder to fit a longer muffler it there than a wider one, at least that is true with my clayton's.

x2

My turndown is just about even with the rear LCA brackets. The exhaust shop that did my exhaust for me used the rear LCA brackets to run a tab over to the turndown as well to help stabilize everything. My cat sits on the top of the x-member.

napajeep
03-04-2007, 03:48 PM
I have the RE long arms, not triangulated like Claytons. The upper arm goes straight back, thus leaving plenty of room length wise (if it is small diameter). I could fit an oval muffler if it were short enough, but anything that short is liable to be extremely loud. I am still going to go over the rear axle with a tailpipe which should keep it relatively quiet inside. Thanks for the imput though.

ILikeMud
03-04-2007, 04:58 PM
i'm running this - sounds a little throaty when new (with my 4.0), but definitely mellowing with age - i like the sound now - installed this time last year

http://home.comcast.net/~ronhubert/hushpower.jpg



http://www.flowmastermufflers.com/hp2.html

got it here: http://www.performancepeddler.com/ - found him on ebay - he had the best price i could find at the time - i've bought a few things from him since - great to deal with - super fast shipping

Sounds great on the 4.0L. I'll be putting one on my Toyota eventually.

jsteves
03-05-2007, 11:25 AM
I have the RE long arms, not triangulated like Claytons. The upper arm goes straight back, thus leaving plenty of room length wise (if it is small diameter). I could fit an oval muffler if it were short enough, but anything that short is liable to be extremely loud. I am still going to go over the rear axle with a tailpipe which should keep it relatively quiet inside. Thanks for the imput though.

I ran mine over the axle and out the side.

Jim311
06-11-2007, 12:13 PM
I bought and installed a Moroso Spiral. It's certainly not a quiet muffler by any means. Sounds good though.

nate
06-11-2007, 01:35 PM
I am using a Summit Racing muffler on my Jeep. It's not "road legal" according to Summit, but it was either that muffler or nothing at all with the way I set it up. Plus it was cheap. No sense on spending lots of money on a muffler.

http://store.summitracing.com/partdetail.asp?autofilter=1&part=SUM%2D630805&N=700+115&autoview=sku

It's fairly loud compared to stock, but nothing crazy. It doesn't attract attention when I drive it on the street, so that works for me.

Here is a 3" one.
http://store.summitracing.com/partdetail.asp?autofilter=1&part=SUM%2D630805&N=700+115&autoview=sku

I just have a turn down welded onto the back of it and it hangs over the end of my belly pan.

nwgrand
06-11-2007, 11:18 PM
you forgot the cherry BOMB, it is sweet!!!!!!!!!!!!!!

Matt
06-11-2007, 11:37 PM
^^^ another great newb post ^^^^ :screwy:

wheelinzj93
04-04-2008, 01:02 AM
i've got the same problem with space and a muffler does the hush power really sound good. i like em low. i have the 4.0 and wanted the small muffler.

DJJordache
04-04-2008, 09:39 AM
I have a magnaflow (that is all they had at the muffler shop that would fit) it is a normal center in and offset out oval muffler and I got it to fit tight fit but it is in there with Claytons. I have my cat pushed as far forward as it will go and it is turned a little to sit partially above the rear of the crossmember. I'll see if I can get pics this weekend.

dangerousdave
04-04-2008, 11:13 AM
I went with a muffler like this.

http://store.summitracing.com/partdetail.asp?autofilter=1&part=SUM%2D630805&N=700+115&autoview=sku

I fit it in with a stock converter after alittle bit of work and triming. This is not the muffler i used I cant remember the inlet and outlet measurements. but it is just like this one and the price was the same. about $22... $32 to the door. and they are on top of there shipping department.

wheelinzj93
04-04-2008, 02:41 PM
well how does the glass pak sound on the 4.0. is it low or throaty sounding

ILikeMud
04-04-2008, 06:16 PM
It's loud and sounds like a tractor.

napajeep
04-04-2008, 07:43 PM
I wound up running two mufflers. I have a bullet up front (right behind the converter) and a Moroso spiral flow that I'm using as a resonator. It looks like ass, but sounds good.

dangerousdave
04-05-2008, 01:02 PM
Its not much quieter than having nothing at all. But I like it. it did deepen the tone of the jeep some. It just gets me through inspection.

Sudz
04-05-2008, 07:46 PM
run a hushpower - you'll be thanking me later

just took these:

http://i31.photobucket.com/albums/c364/-Sudz/100_0619.jpg

http://i31.photobucket.com/albums/c364/-Sudz/100_0614.jpg

http://i31.photobucket.com/albums/c364/-Sudz/100_0615.jpg

http://i31.photobucket.com/albums/c364/-Sudz/100_0611.jpg

http://i31.photobucket.com/albums/c364/-Sudz/100_0608.jpg

http://i31.photobucket.com/albums/c364/-Sudz/100_0607.jpg

wheelinzj93
04-05-2008, 07:58 PM
so how does the hush power sound. cause i don't want it sounding like a tractor

Sudz
04-05-2008, 08:04 PM
so how does the hush power sound. cause i don't want it sounding like a tractor

mellow, throaty sound with my 4.0 - not loud at all

Sudz Seal of Approval :D

ILikeMud
04-05-2008, 09:36 PM
Here's a vid clip of my old truck, 4.0L 2.5" piping, glass pack, dumped under the truck.
http://img.photobucket.com/albums/v87/G2Rac/th_exhaust.jpg (http://smg.photobucket.com/albums/v87/G2Rac/?action=view&current=exhaust.flv)

Sudz
04-05-2008, 09:52 PM
this one's better

http://img.photobucket.com/albums/v87/G2Rac/th_sound.jpg (http://smg.photobucket.com/albums/v87/G2Rac/?action=view&current=sound.flv)

ILikeMud
04-05-2008, 10:16 PM
Eh, that's really only a vid of me holding it around 1500-2000RPM.

96_zjlarado
04-07-2008, 07:43 AM
I run a flowmaster 40 on my 4.sl0. i shortened up the "downpipe" so that it stops right above the x-member. shortened up the input of the cat and welded that to the pipe, then shortened up the output of the cat and the input of the flowmaster so it all fits in nice and tight before the rear LCA mount and up higher so i can have a nice flat belly.

ZachJ
04-07-2008, 11:22 AM
I run a flowmaster 40 on my 4.sl0. i shortened up the "downpipe" so that it stops right above the x-member. shortened up the input of the cat and welded that to the pipe, then shortened up the output of the cat and the input of the flowmaster so it all fits in nice and tight before the rear LCA mount and up higher so i can have a nice flat belly.


Im glad somebaody else tried this and had it fit. Now I know it will work.

Cue-Ball
04-07-2008, 01:26 PM
I run a flowmaster 40 on my 4.sl0. i shortened up the "downpipe" so that it stops right above the x-member. shortened up the input of the cat and welded that to the pipe, then shortened up the output of the cat and the input of the flowmaster so it all fits in nice and tight before the rear LCA mount and up higher so i can have a nice flat belly.

Very similiar to my set up.

DJJordache
04-07-2008, 02:07 PM
Very similiar to my set up.x3 damn I forgot to get pics this weekend....

Mtn WJ
04-07-2008, 11:42 PM
I am running a glass pack on my 4.0 WJ. It sounds decent. It really is not that loud inside. I have it vented out the side just behind the passenger rear tire. This comes in handy because at 6 inches of lift it puts the muffler the right level for a pimped out Honda playing some crappy rap music.

Anyway I think 4.0s sound great with a glass pack or cherry bomb. They also fit in places other mufflers cant.

96_zjlarado
04-08-2008, 09:56 AM
I love the way the FM 40 sounds. nice low yet mellow rumble at idle and not real loud when you're in it, but enough to make it sound like it's got some ass.

bgcntry72
04-11-2008, 09:44 AM
I run a flowmaster 40 on my 4.sl0. i shortened up the "downpipe" so that it stops right above the x-member. shortened up the input of the cat and welded that to the pipe, then shortened up the output of the cat and the input of the flowmaster so it all fits in nice and tight before the rear LCA mount and up higher so i can have a nice flat belly.

I did this.
Shortened downpipe, flanged to the cat, which is flanged ot a Ravin muffler that is only 14" long and oval.
The turndown is about even with the upper rear control arm mounts on the unibody, and is strapped up to the underbelly.
With a Mopar header, Magnaflow cat, and Ravin dumping under the truck, the exhaust is a non-issue on the trails and the sound inside isn't bad at all even at highway speeds.