Realign C6 mufflers?
Thread Starter
Burning Brakes
Joined: Mar 2008
Posts: 1,058
Likes: 0
From: Walker MI
Realign C6 mufflers?
My 08 had to get the transmission rebuilt (MN6), looks like they didn't quite get the mufflers perfectly aligned. I'll be putting it up on a lift to change the oil tonight, what's the proper procedure to get them realigned? It also looks like they might be leaking at the connection to the X-pipe, saw some black there when I peeked underneath to assess the misalignment.
Stock 2008 MN6 coupe, thanks.
Stock 2008 MN6 coupe, thanks.
Safety Car
Joined: Jan 2008
Posts: 4,711
Likes: 3
From: Middle of No where AK
You gotta loosen them up from the x pipe and the back of the mufflers and adjust the over axle pipes to get them straightened out. It can take hours to get it perfect. Ive done mine a couple of times and getting it perfect is a real pain.
Le Mans Master
Joined: Feb 2006
Posts: 5,762
Likes: 4
From: Chandler Arizona
It's a hard job. I put on NPP mufflers on my 06 and I struggled to get them aligned and finally quit. Then I looked at a brand new 09 in the parking lot at work and they were not even close to being aligned. I decided I could live with it. It's really one of those things that only the owner of the car will notice.
Race Director
Joined: Sep 2007
Posts: 16,557
Likes: 2,106
From: Peoria/Phoenix AZ
C6 of Year Finalist (performance mods) 2019
I used a 24" square blade to lay on the tips. Then rotated the mufflers until all four tips made contact with the blade and then tightened the pipe clamps. It took about 5 minutes. After a couple of days driving, I checked and it moved a little, but still good enough for me.
Safety Car
Joined: Jan 2008
Posts: 4,711
Likes: 3
From: Middle of No where AK
I used a 24" square blade to lay on the tips. Then rotated the mufflers until all four tips made contact with the blade and then tightened the pipe clamps. It took about 5 minutes. After a couple of days driving, I checked and it moved a little, but still good enough for me.
Thread Starter
Burning Brakes
Joined: Mar 2008
Posts: 1,058
Likes: 0
From: Walker MI
Got them aligned but notice some black soot at the middle of the X-pipe where it's welded and also around where the clamps are where the mufflers insert, the clamps are tightened all the way but I suspect there's still a tiny leak happening in these locations... any ideas? back to dealer for new clamps/xpipe?
Safety Car
Joined: Jan 2008
Posts: 4,711
Likes: 3
From: Middle of No where AK
Got them aligned but notice some black soot at the middle of the X-pipe where it's welded and also around where the clamps are where the mufflers insert, the clamps are tightened all the way but I suspect there's still a tiny leak happening in these locations... any ideas? back to dealer for new clamps/xpipe?
Thread Starter
Burning Brakes
Joined: Mar 2008
Posts: 1,058
Likes: 0
From: Walker MI
However, I do have some wind noise 70+mph in the driver window near the halo after the A-pillar trim piece was replaced... this just a window adjustment issue?
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Le Mans Master
Joined: Aug 2002
Posts: 8,472
Likes: 38
From: Houston TX
St. Jude Donor '11
Thanks for the posts. 
Now I feel a lot better that I have been battling with my exhaust for a while now trying to keep the passenger over-the-axle pipe from banging up against the frame or differential brace.
I miss my C5 exuahst...
Now I feel a lot better that I have been battling with my exhaust for a while now trying to keep the passenger over-the-axle pipe from banging up against the frame or differential brace.I miss my C5 exuahst...
Race Director
Joined: Oct 2005
Posts: 14,999
Likes: 200
From: Bay Area Ca.
Most vette and even other dual exhaust sports car have poor tip alignment. Gets even worse after cat back installation.
For example my Corsa's right side dual tips are welded off angle. Not much but enough to show to the serious onlooker. Something like this can not be corrected casually. Also I noticed a lot of uneven length tips........after replacement. Hell even right from the factory it can be poor, usually is.
For example my Corsa's right side dual tips are welded off angle. Not much but enough to show to the serious onlooker. Something like this can not be corrected casually. Also I noticed a lot of uneven length tips........after replacement. Hell even right from the factory it can be poor, usually is.
