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Old 07-14-2010, 07:46 PM   #1
diplomat1
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1994 SL2
Default how do i change the muffler/exhaust on my 94 sl2?

Nothin is wrong with the one i have now i just wanna know how i can do it, wat i will need and any other tips/tricks i might need. thanks alot

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Old 07-14-2010, 07:54 PM   #2
Redhotftw!
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Default Re: how do i change the muffler/exhaust on my 94 sl2?

a welder...

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Old 07-14-2010, 08:13 PM   #3
Kaervak
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Default Re: how do i change the muffler/exhaust on my 94 sl2?

Quote:
Originally Posted by Redhotftw! View Post
a welder...
Not necessarily. Magnaflow, Catco & a couple others make an all in one Flex pipe & cat, no welding required. I just replaced my entire exhaust from the flex pipe and back. You'll need a 13MM deep well socket with a wobbler extension for the three nuts holding the flex pipe to the manifold. Chances are you'll have to cut the resonator from the cat since things have probably rusted solid. Same for the muffler. I was lucky removing my downstream O2 sensor, after a shot of WD-40 and letting it sit for about 20 minutes it backed out without issue. When putting the new exhaust hardware in, use stainless steel fasteners. If you ever want to replace things again the stainless steel will make life easier. Oh, soak a rag or paper towel with PB Blaster and wrap the nuts that hold the flex/manifold, let it sit overnight. I did that with mine and they broke free easily. Everything else is pretty straightforward. My cat/flex pipe is the Magnaflow one and the resonator and muffler is Walker OEM direct fit stuff. It all just bolted together. Oh, don't forget gaskets, one between manifold and flex and one between cat and resonator.

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Old 07-14-2010, 09:40 PM   #4
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Default Re: how do i change the muffler/exhaust on my 94 sl2?

Kaervak,

What about getting the pipe around the rear axle? I've seen some comment that it's nearly impossible without a lift to get the car high enough?

...
1997 - SL2, barebones, 161k, Auto - Rebuild complete and.. burnt a valve 20k later Arrgh!
Purchased 114k 10/07
Added OEM CC

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Old 07-14-2010, 10:32 PM   #5
Kaervak
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Default Re: how do i change the muffler/exhaust on my 94 sl2?

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Originally Posted by off-track View Post
Kaervak,

What about getting the pipe around the rear axle? I've seen some comment that it's nearly impossible without a lift to get the car high enough?
If you have a custom bend resonator that goes all the way back to the muffler, yes it will be difficult. My old resonator was like that and I needed to hacksaw a part of it to get it out. The Waker "Direct Fit" resonator stops right before the rear suspension setup and the Walker muffler has a little extension pipe that goes over the suspension and slips over the resonator and is held on with a clamp. I really didn't even need to put the rear up on jack stands when putting the muffler on since there was plenty of room. Here are a couple pics, not the greatest since I just took them and it's 10:30pm here but it should get the idea across.
Attached Images
File Type: jpg img_2301.jpg (156.0 KB, 57 views)
File Type: jpg img_2302.jpg (99.8 KB, 50 views)
File Type: jpg img_2299.jpg (98.4 KB, 45 views)
File Type: jpg img_2300.jpg (98.3 KB, 43 views)

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Old 07-28-2010, 02:26 PM   #6
OUman63
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Default Re: how do i change the muffler/exhaust on my 94 sl2?

Hello!

I'm about to install a eastmon direct fit pipe and hardware is very, very rusty. I'm looking at picking up some extra hardware in case the bolts snap, but I'm having trouble finding out what kind of hardware I need. Do you happen to know what bolts i need for the pipe to attach to the manifold and for the hardware at the flange for the exhaust pipe after the cat? Thanks in advance.

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Old 07-28-2010, 10:41 PM   #7
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Default Re: how do i change the muffler/exhaust on my 94 sl2?

Quote:
Originally Posted by OUman63 View Post
I'm looking at picking up some extra hardware in case the bolts snap.
They will, or you'll probably have to cut them! Sorry, don't know the sizes but, I'd just take a pipe/flange to your local hardware store and find some stainless bolts/nuts to fit.

As an aside.. pulling into HD this weekend.. Hmm, car louder than normal? Got to a parking space, parked and the rear started clanging like a bell! I looked underneath and saw that the inlet pipe of the muffler sheared completely off. ARRGH! Off to Mexi-Muffler again.. sigh.

...
1997 - SL2, barebones, 161k, Auto - Rebuild complete and.. burnt a valve 20k later Arrgh!
Purchased 114k 10/07
Added OEM CC

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Old 07-29-2010, 12:56 AM   #8
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Default Re: how do i change the muffler/exhaust on my 94 sl2?

Quote:
Originally Posted by OUman63 View Post
Hello!

I'm about to install a eastmon direct fit pipe and hardware is very, very rusty. I'm looking at picking up some extra hardware in case the bolts snap, but I'm having trouble finding out what kind of hardware I need. Do you happen to know what bolts i need for the pipe to attach to the manifold and for the hardware at the flange for the exhaust pipe after the cat? Thanks in advance.
I did both my 97 and 00 SL2s myself with only my drive up lifts and jacks. I found it easier to also jack up the front. It took some struggling but I managed to get it over and around the rear axles on both cars without breaking anything. Last March my 97 SL2 gave a gift to the Maryland Turnpike in the form of my muffler which fell clean off. (I thought there was a truck passing but it never materialized). Limped it back to NJ with some dirty looks but intact. Installed the new one and it has been solid ever since. New pipes are secured via stainless steel bolts and clamps tightened by my Dewault impact wrench. So far so good.

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Old 09-15-2010, 05:44 PM   #9
T-boneSW1
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Default Re: how do i change the muffler/exhaust on my 94 sl2?

would I be correct that this would be a harder job on a wagon (SW1). Also I need to replace everything except the cat down from the manifold
thanks

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Old 09-15-2010, 11:09 PM   #10
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Default Re: how do i change the muffler/exhaust on my 94 sl2?

Quote:
Originally Posted by T-boneSW1 View Post
would I be correct that this would be a harder job on a wagon (SW1).
I don't think there's any difference.

Quote:
Originally Posted by T-boneSW1 View Post
Also I need to replace everything except the cat down from the manifold
I just replaced my flex and regretted not getting the whole pipe. I think you need a Walker #52165

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Old 09-16-2010, 12:01 PM   #11
T-boneSW1
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Default Re: how do i change the muffler/exhaust on my 94 sl2?

thanks I found this place and parts
http://www.rockauto.com/catalog/rafr...565528-1111975

my question is can i do this by myself in a reasonable amount of time given I need to thread the whole long pipe, flex pipe and cat back with out damaging the cat

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Old 09-16-2010, 12:38 PM   #12
Chazberry
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Default Re: how do i change the muffler/exhaust on my 94 sl2?

Quote:
Originally Posted by T-boneSW1 View Post
my question is can i do this by myself in a reasonable amount of time given I need to thread the whole long pipe, flex pipe and cat back with out damaging the cat
This is hard to say since you never know how much you're gonna have to fight with rusty bolts. My rear pipe flange broke away from the Cat flange - I had some fun re-opening those flange holes. Some say you can punch the studs out, but I guess you don't want to beat on the Cat too much for fear of damaging the core. Getting the exhaust pipe over the rear suspension without a lift requires raising the front passenger-side corner pretty high. I reconnected this pipe back to the Cat before cutting the front pipe behind the Flex Connector. And then there's the challenge of disconnecting the Down-pipe from the Exhaust Manifold. The whole thing can be a project.
Attached Images
File Type: jpg Rear Flng.JPG (65.9 KB, 66 views)
File Type: jpg Cat Core.JPG (90.7 KB, 39 views)
File Type: jpg Pipe-Cat.JPG (88.8 KB, 24 views)
File Type: jpg Flex.JPG (113.8 KB, 31 views)

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