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muffler placement
#1022906
06/29/11 07:32 PM
06/29/11 07:32 PM
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Joined: Jun 2003
Posts: 9,225
Charleston
sixpackgut
OP
Drag Week Mod Champion
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OP
Drag Week Mod Champion
Joined: Jun 2003
Posts: 9,225
Charleston
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does muffler placement make any difference in sound or performance
im running a straight pipe off fenderwell headers and was wondering what would happen if bullet muffler was placed right after the collector then running the straight pipe. would it make it more quiet or hurt performace?
what about muffler in the midle of a 4 ft lenght and compared to it at the end
anyone try anything like this?
Gen 3 power 6.22@110, 9.85@135
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performance only racing, CRT, ultimate converter, superior design concepts, ThumperCarbs
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Re: muffler placement
[Re: Quicktree]
#1022910
06/29/11 07:47 PM
06/29/11 07:47 PM
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Joined: Nov 2003
Posts: 5,160
Texas
dannysbee
master
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master
Joined: Nov 2003
Posts: 5,160
Texas
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I was thinking the further away from the header you can mount the muffler the better, it gives the exhaust time to cool and the cooling gasses contract which makes less volume for the muffler.
Getting old just means you were smarter than some and luckier than others.
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Re: muffler placement
[Re: sixpackgut]
#1022911
06/29/11 07:50 PM
06/29/11 07:50 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
I Win
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I Win
Joined: Jan 2003
Posts: 32,394
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Quote:
Quote:
isn't there a book that covers that  wait a minute you don't believe in them  from what I have read, yes it makes a slight difference. X pipe as close to the collectors as possible with mufflers to follow. thats what I am going to do.
so you want me to run a x pipe with fenderwells? i noticed i didnt have any headaches while you were trying to pull an insurance scam
not sure,if you can or not
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Re: muffler placement
[Re: sixpackgut]
#1022913
06/29/11 08:05 PM
06/29/11 08:05 PM
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Joined: Nov 2003
Posts: 5,160
Texas
dannysbee
master
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master
Joined: Nov 2003
Posts: 5,160
Texas
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Some of the old Fords that mounted the muffler nearly to the back bumper with 6-8 out the back of the muffler were really quite. My Dad did duels on a Falcon one time and the muffler placement was at the rear on that car. He worked all day putting a duel exhaust kit on it he bought. He was really pissed when it wasn't any louder than the single exhaust.
Getting old just means you were smarter than some and luckier than others.
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Re: muffler placement
[Re: moparniac]
#1022916
06/29/11 10:42 PM
06/29/11 10:42 PM
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Joined: Oct 2006
Posts: 4,765
quick77rt
Parts Problem
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Parts Problem
Joined: Oct 2006
Posts: 4,765
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Quote:
Silly loud but that's the way I roll!
Id of saved some $$$ for the aftermarket drive shaft, all your gonna be doing is rolling to the side of the road after it pops..
Nice ex though 
 Exhaust
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Re: muffler placement
[Re: dannysbee]
#1022920
06/29/11 11:34 PM
06/29/11 11:34 PM
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Joined: Jan 2003
Posts: 6,591
Canton, Ohio
Sport440
master
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master
Joined: Jan 2003
Posts: 6,591
Canton, Ohio
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Quote:
I was thinking the further away from the header you can mount the muffler the better, it gives the exhaust time to cool and the cooling gasses contract which makes less volume for the muffler.
Thats my opinion too, and tech wise is correct for the reasons stated. For best results mout the muffler as far back as possible for both best performance and decible reduction.
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Re: muffler placement
[Re: Sport440]
#1022921
06/30/11 01:05 AM
06/30/11 01:05 AM
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Joined: Aug 2003
Posts: 43,127
Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,127
Bend,OR USA
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Quote:
Quote:
I was thinking the further away from the header you can mount the muffler the better, it gives the exhaust time to cool and the cooling gasses contract which makes less volume for the muffler.
Thats my opinion too, and tech wise is correct for the reasons stated. For best results mout the muffler as far back as possible for both best performance and decible reduction.
 Mine are mounted behind the rear end between the rear sub frames and the outer fenders, no tail pipe at all, straight out of the mufflers Three inch pipes from the headers to the 3x14 oval Magnaflows mounted at the rear bumper so the end of the muff is right under the rear bumper Nice and quiet at part throttle, not so at WOT 
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: muffler placement
[Re: sixpackgut]
#1022923
06/30/11 08:59 AM
06/30/11 08:59 AM
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Joined: Jan 2003
Posts: 13,357
Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,357
Marion, South Carolina [><]
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Ray, the farther back the mufflers are from the collector, the quieter it will be.
CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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Re: muffler placement
[Re: Thumperdart]
#1022926
06/30/11 02:04 PM
06/30/11 02:04 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
I Win
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I Win
Joined: Jan 2003
Posts: 32,394
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Quote:
Quote:
why not just put some quiet mufflers on it it's not like you race the thing.I still bet a good muffler shop could bend a set of X pipes for it.
Are you refering to me quick?
no
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Re: muffler placement
[Re: Thumperdart]
#1022928
06/30/11 02:12 PM
06/30/11 02:12 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
I Win
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I Win
Joined: Jan 2003
Posts: 32,394
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Quote:
Just figured since I`m a poser and don`t race much anymore..........
Myron has some real quiet mufflers on his car. they sound good but not loud at all and he said he even picked up some ET with his. if you are going to drive a lot on the street I would want something a little quiet.
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Re: muffler placement
[Re: Quicktree]
#1022929
06/30/11 02:18 PM
06/30/11 02:18 PM
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Joined: Jul 2004
Posts: 19,317
State of confusion
Thumperdart
I Live Here
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I Live Here
Joined: Jul 2004
Posts: 19,317
State of confusion
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I agree but w/fenderwell headers it`s a pain to fit muffs..........
72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....
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Re: muffler placement
[Re: sixpackgut]
#1022931
06/30/11 02:59 PM
06/30/11 02:59 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
I Win
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I Win
Joined: Jan 2003
Posts: 32,394
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Quote:
Quote:
Just figured since I`m a poser and don`t race much anymore..........
Quicktree is the biggest poser on the site
yep you are right, thanks. 
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