OK so it's time to replace the mufflers - TCCoA Forums

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post #1 of 17 (permalink) Old 01-23-2017, 09:59 AM Thread Starter
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OK so it's time to replace the mufflers

Noticed this weekend that the mufflers are both rotten at the front seam. So time for some new ones. I would like more rumble from my bird, but want to keep the exhaust exiting in the notches of the rear skirt. Anybody know who would make a slightly louder version of the stock mufflers for these cars? Thanks
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post #2 of 17 (permalink) Old 01-23-2017, 10:21 AM
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I've always been a Magnaflow man. I'd measure the length of the muffler body, and note the offsets of the inlet and outlet pipes. Then go to Magnaflow's site to pick out the part # which matches.
They make polished tips as well, in a variety.
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post #3 of 17 (permalink) Old 01-23-2017, 03:54 PM
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I have always heard extremely good things about Magnaflows. The problem that I have with them is that they all have stainless steel cases. I like to weld as much of my exhaust system together as possible, and I'm not equipped to weld stainless.

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post #4 of 17 (permalink) Old 01-23-2017, 04:19 PM
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These serve a FEW of us well

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post #5 of 17 (permalink) Old 01-23-2017, 04:24 PM
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I like the sound of my Flowmaster 40 on my 5.0 tbird. When I had just a 3" diameter cherry bomb on my car w/ no cats, the sound was almost painfully loud at higher RPMs (enough for me to worry about exceeding the 95db limit set by the racetrack). The baffles inside the Flowmaster helped a ton here.

Your cats and a downturned tip like I suspect you will want to stay stock looking would have also helped but that wasn't the look I was going for.

Q: If your muffler is rusted out, how is the pipe upstream of them?
You might find it easy to replace all of this stuff while you are under there (or are paying someone to do the work).
I bought all my mandrel bent pipes from Josh @ Mandrel Exhaust Systems


Youtube is probably a great source for Muffler clips

Flowmaster
https://www.youtube.com/results?sear...ird+flowmaster

Magnaflow
https://www.youtube.com/results?sear...bird+mangaflow

Dynomax Super Turbo
https://www.youtube.com/results?sear...ax+super+turbo

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post #6 of 17 (permalink) Old 01-23-2017, 04:30 PM
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It's been a long time since I've seen the stock MN12 mufflers but I'm fairly certain there's no inlet/outlet offset. Pipes are likely fine, they're stainless steel.

-Matt
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post #7 of 17 (permalink) Old 01-23-2017, 04:52 PM
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S4Gunn, the Flowmasters are the perfect muffler for your car, as they were designed for the track. If my car wasn't a DD, I'd have kept the 40's on it because I love the sound. However, the drone I got from them was maddening. After about a year and a half I removed them and installed a knock off of a Magnaflow performance style muffler. It was recommended by my shop, and I was able to hear it before installing. I don't have a brand name for mine, but the case is an aluminized product.

When I installed the Flowmasters I was not aware of the different designs of mufflers and how they worked. Any reflective style muffler will likely drone. A resonating design, (straight through passage way) such as a glass pack, cherry bomb,etc., will not drone. The factory restrictive, suitcase design with it's many baffles is pretty tame in sound.

FLOWMASTER® HISTORY
Thirty years ago, Flowmaster® mufflers were conceived as a solution to a growing problem with sound issues at race tracks in California and beyond. In his successful effort to quiet race cars without reducing performance, our founder refused to accept the status quo of the day and instead pushed exhaust technology beyond common thinking. This led to many ‘firsts’ in automotive exhaust science, as well as many patents protecting the various technologies used in Flowmaster® products. With those developments, Flowmaster ushered in a revolution in automotive performance exhaust.

I like this article on exhaust systems. Exhaust Function 101 - Automotive Forums .com Car Chat

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post #8 of 17 (permalink) Old 01-23-2017, 05:03 PM
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If your car still has cats and the third cat/ resonater, you can go with a pretty aggressive muffler and not worry about it being too loud. The exhaust is pretty muffled before it even gets to the mufflers.

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post #9 of 17 (permalink) Old 01-23-2017, 05:23 PM
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Quote:
Originally Posted by Boston-Bull View Post
These serve a FEW of us well

Super Turbos
X2!

They fit in the stock location and are close to the same size as a the stock mufflers.

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Car sounds good Ron! Is that your place?

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post #10 of 17 (permalink) Old 01-23-2017, 05:31 PM
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Quote:
Originally Posted by Thunderstruck95 View Post
If your car still has cats and the third cat/ resonater, you can go with a pretty aggressive muffler and not worry about it being too loud. The exhaust is pretty muffled before it even gets to the mufflers.
Very true. I ran with straight pipes in place of the mufflers for years, it was very quiet, Idle to 2000 RPM was barely any louder than stock, and at WOT it was still a bit quieter than my duals with Magnaflow DIDO muffler. The 94-95s use a resonator too so there wasn't much, if any, drone.

-Matt
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post #11 of 17 (permalink) Old 01-30-2017, 07:25 PM
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Magnaflow doesn't make a kit for the TBird, but they do have a muffler in our configuration
4 x 9 OVAL 13214
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post #12 of 17 (permalink) Old 01-31-2017, 09:54 AM
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Magnaflow doesn't make a kit for the TBird, but they do have a muffler in our configuration
4 x 9 OVAL 13214
What is their 2.5in muffler?

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post #13 of 17 (permalink) Old 01-31-2017, 10:07 AM
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That's 13216, I'm not sure my pipes are 2", hell my Sonic Turbo is that size and it's a 1.4 liter..... This is a 4X9 oval center-offset muffler (2.5" dia)

The turndown tips for the 2" dia are not very aesthetic...

The polished turndown tip for the 2.5" is 35179

CONFIGURATION CENTER/OFFSET
LENGTH 14 IN
OVERALL LGTH 20 IN
IN/OUT DIA 2.5/2.5 IN
FINISH SATIN
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post #14 of 17 (permalink) Old 01-31-2017, 09:16 PM
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This is mine. Just cut the mufflers off and put on some turn down tips. I don't know if it'll be too loud for what you want but in person its not bad. Just driving around it isn't too loud.
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post #15 of 17 (permalink) Old 02-01-2017, 07:20 AM
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This is mine. Just cut the mufflers off and put on some turn down tips. I don't know if it'll be too loud for what you want but in person its not bad. Just driving around it isn't too loud.
Highway drone?
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post #16 of 17 (permalink) Old 02-02-2017, 05:52 PM
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^^ Waiting to hear about that as well!

Quote:
Originally Posted by Natesriv View Post
That's 13216, I'm not sure my pipes are 2", hell my Sonic Turbo is that size and it's a 1.4 liter..... This is a 4X9 oval center-offset muffler (2.5" dia)

The turndown tips for the 2" dia are not very aesthetic...

The polished turndown tip for the 2.5" is 35179

CONFIGURATION CENTER/OFFSET
LENGTH 14 IN
OVERALL LGTH 20 IN
IN/OUT DIA 2.5/2.5 IN
FINISH SATIN
Thanks for the info!

'97 Bird, "Pearl": L/R 2.5in Magnaflow Hi-Flow CATs | PI Intake & PI Cams | Suspension Rebuild

'13 Taurus, "The Bull": 3.5L Goodness

'00 2dr v6 Accord, "Dirty Girl": Magnaflow Hi-Flow CAT | Greddy SP2 CAT-Back | Eibach ProKit springs | Eibach F/R Sway Bars | KYB-GR2 struts
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post #17 of 17 (permalink) Old 02-02-2017, 06:35 PM
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Highway drone?
nope. cruising at 75 theres nothing normal road noise

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