Corsa Exhaust - leaks?
Thread Starter
Instructor
Joined: Nov 2000
Posts: 192
Likes: 0
From: Egg Harbor Twp, NJ NJ
Corsa Exhaust - leaks?
I installed a Corsa exhaust on my 95 LT1 coupe about 6 weeks ago. Love the sound.
This past weekend I had the car up on stands to install a RD cross frame and found some tell tale marks indicating, I think, that there are some leaks in my exhaust system.
These marks show up as black soot streaks about 2-3 inches long coming from the connecting points. I noticed one at the easy seal clamp that connects the pass side header to the corsa head pipe. Two marks at the conections between the head pipes and center muffler and one between the pass side muffler and the over the axle pipe.
I checked the torque on the clamps and they seem to check out good.
Did others have the same problem and if so how did you fix? Did you use higher torque?
This past weekend I had the car up on stands to install a RD cross frame and found some tell tale marks indicating, I think, that there are some leaks in my exhaust system.
These marks show up as black soot streaks about 2-3 inches long coming from the connecting points. I noticed one at the easy seal clamp that connects the pass side header to the corsa head pipe. Two marks at the conections between the head pipes and center muffler and one between the pass side muffler and the over the axle pipe.
I checked the torque on the clamps and they seem to check out good.
Did others have the same problem and if so how did you fix? Did you use higher torque?
Le Mans Master
Joined: Aug 2002
Posts: 6,080
Likes: 3
From: Clearwater FL
St. Jude Donor '06
I have had mine work their way loose a couple times. I can usually tell pretty quick with the change in tone. I would get a small pick and slide it in the expansion groove cut into the pipes and see if the pipes are still fully seated.
Thread Starter
Instructor
Joined: Nov 2000
Posts: 192
Likes: 0
From: Egg Harbor Twp, NJ NJ
Just talked to Jeff from Corsa and he explains that to have these escaped carbon marks is normal. I asked if having the system welded would be good and his reply was not reccomended. The stainless needs to expand and contract.
So I guess the system is OK.
So I guess the system is OK.
Race Director
Joined: Oct 2002
Posts: 10,864
Likes: 196
From: Southern CA
But I must confess I did not ever recheck mine, just torqued to the mfg. spec & drove it away.
I'd like to add that probably all aftermarket exhaust systems that are "clamped" together will have a little carbon trail/leak.
Ever get up close & examine a race cars exhaust connections after an event?
The only way around this (if you must) is to weld. I don't recommend weld, you may need to remove it someday. Try getting to the beam fastners with the exhaust in place.
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Race Director
Joined: Feb 2003
Posts: 11,672
Likes: 20
From: Lake Wylie SC
Originally Posted by redgb
Just talked to Jeff from Corsa and he explains that to have these escaped carbon marks is normal. I asked if having the system welded would be good and his reply was not reccomended. The stainless needs to expand and contract.
So I guess the system is OK.
So I guess the system is OK.
Melting Slicks
Joined: Apr 2003
Posts: 2,150
Likes: 6
From: NS
Originally Posted by redgb
Just talked to Jeff from Corsa and he explains that to have these escaped carbon marks is normal. I asked if having the system welded would be good and his reply was not reccomended. The stainless needs to expand and contract.
So I guess the system is OK.
So I guess the system is OK.
Yep, mine does it too. It never sounds like it's leaking so I don't care.
