No Exhaust??
Thread Starter
Instructor
Joined: Mar 2013
Posts: 248
Likes: 8
From: Dayton NV
No Exhaust??
I am curious if I could run only catalytic converts on my 1992 corvette (lt1). There are two cats with O2 sensors. I am thinking of going cutouts at the cats and then leaving the exhaust on for when I want it quiet. I'm just unsure if the engine needs back pressure or if it would cause any harm to the engine just having the exhaust manifolds and cats for exhaust. Thanks for any input.
Melting Slicks
Joined: Jun 2013
Posts: 3,065
Likes: 39
I am curious if I could run only catalytic converts on my 1992 corvette (lt1). There are two cats with O2 sensors. I am thinking of going cutouts at the cats and then leaving the exhaust on for when I want it quiet. I'm just unsure if the engine needs back pressure or if it would cause any harm to the engine just having the exhaust manifolds and cats for exhaust. Thanks for any input.
Le Mans Master
Joined: May 2005
Posts: 7,340
Likes: 2,270
From: Central Maryland
I am curious if I could run only catalytic converts on my 1992 corvette (lt1). There are two cats with O2 sensors. I am thinking of going cutouts at the cats and then leaving the exhaust on for when I want it quiet. I'm just unsure if the engine needs back pressure or if it would cause any harm to the engine just having the exhaust manifolds and cats for exhaust. Thanks for any input.
Live well,
SJW
Melting Slicks
Joined: Feb 2003
Posts: 2,669
Likes: 809
From: Saskatoon Sask.
I am going to assume that the average person would direct the cutout outlet down, not up, so I don't think a cookdown scenario would happen. I would be more concerned with exhaust gases entering the interior with the cutouts being this far forward. If the OP wants cutouts, I would mount them in front of the mufflers.
Team Owner
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
There should not be an issue with a lack of back pressure; it's really no different than running open headers.
I would suggest getting a good cat-back exhaust system. You can gain some HP and won't have to worry about the noise police....
Team Owner
Joined: Aug 2004
Posts: 21,543
Likes: 3,216
From: Park City Utah
that heat is not a real concern with properly mounted cut outs.I also agree that CO poisoning could be a concern.
Thread Starter
Instructor
Joined: Mar 2013
Posts: 248
Likes: 8
From: Dayton NV
I ran it for about 10 miles or so just for the test drive, with only the cats, it is way to loud for my liking, the rumbling is ridiculous! I am going to put the old exhaust back on.
Thanks for the help and input everyone.
Thanks for the help and input everyone.
Racer
Joined: Jun 2011
Posts: 283
Likes: 5
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