Let that thing BREATHE!!!!
Cats on an early C3?
Race Director
Joined: Jul 2004
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From: Scottsdale Arizona
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Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
Cats are required in Canada IF the car came orginally with them. It is an automatic $450 fine if a visual inspection shows no cats.
Since my exhaust is 3 inch I just bought a pair of high flow 3 inch cats, cut the pipe and welded them in place. They are right behind the crossmember. Since my crossmember is knotched, no longer use the holes the exhaust can be dropped as one piece.
Since my exhaust is 3 inch I just bought a pair of high flow 3 inch cats, cut the pipe and welded them in place. They are right behind the crossmember. Since my crossmember is knotched, no longer use the holes the exhaust can be dropped as one piece.
Melting Slicks
Joined: Dec 2005
Posts: 2,441
Likes: 0
Since you live in Calif., I'm sure you are well aware that cats aren't required, so there must be other reasons you want to do this. I put cats on my '72 recently behind the cross member because I don't want a Prius, and for other reasons. So far they have worked out great. I did add insulation above where they hang and welded an additional metal heat shield to the top of the cats.
Pro
Joined: May 2004
Posts: 702
Likes: 1
From: Sealy TX
St. Jude Donor 06-'07
Maybe he wants to do his part for the environment.
Safety Car
Joined: Oct 2005
Posts: 3,570
Likes: 1
From: Algonac Michigan
Cats are required in Canada IF the car came orginally with them. It is an automatic $450 fine if a visual inspection shows no cats.
Since my exhaust is 3 inch I just bought a pair of high flow 3 inch cats, cut the pipe and welded them in place. They are right behind the crossmember. Since my crossmember is knotched, no longer use the holes the exhaust can be dropped as one piece.
Since my exhaust is 3 inch I just bought a pair of high flow 3 inch cats, cut the pipe and welded them in place. They are right behind the crossmember. Since my crossmember is knotched, no longer use the holes the exhaust can be dropped as one piece.
Advanced
Joined: Jan 2003
Posts: 96
Likes: 0
From: Austin TX
I have a '77 with dual cats. They are just about the same place Norval put his. I don't have to have them either, so I guess the consensus opinion is I'm stupid. They don't seem to hurt performance much.
Last edited by NeverFinished; Mar 14, 2007 at 04:10 PM.
Thread Starter
Instructor
Joined: Mar 2006
Posts: 222
Likes: 3
From: Campbell CA
Thanks to norval, shafrs3 and ccs96.
As for the others, thanks for your helpful and intelligent responses(not!) Wow I didn't know that I didn't need them in California, thanks!
I'm just trying to clean it up a bit. I figure I could make it pretty reasonable using cats in conjunction with my Gen 7 DFI. I've ridden in some pretty quick C4's with full smog equip. I don't think it will kill the power that much. The problem is where to fit them in.
Thanks for the photos!
As for the others, thanks for your helpful and intelligent responses(not!) Wow I didn't know that I didn't need them in California, thanks!
I'm just trying to clean it up a bit. I figure I could make it pretty reasonable using cats in conjunction with my Gen 7 DFI. I've ridden in some pretty quick C4's with full smog equip. I don't think it will kill the power that much. The problem is where to fit them in.
Thanks for the photos!
Melting Slicks
Joined: Dec 2005
Posts: 2,441
Likes: 0
Thanks to norval, shafrs3 and ccs96.
As for the others, thanks for your helpful and intelligent responses(not!) Wow I didn't know that I didn't need them in California, thanks!
I'm just trying to clean it up a bit. I figure I could make it pretty reasonable using cats in conjunction with my Gen 7 DFI. I've ridden in some pretty quick C4's with full smog equip. I don't think it will kill the power that much. The problem is where to fit them in.
Thanks for the photos!
As for the others, thanks for your helpful and intelligent responses(not!) Wow I didn't know that I didn't need them in California, thanks!
I'm just trying to clean it up a bit. I figure I could make it pretty reasonable using cats in conjunction with my Gen 7 DFI. I've ridden in some pretty quick C4's with full smog equip. I don't think it will kill the power that much. The problem is where to fit them in.
Thanks for the photos!
Le Mans Master
Joined: Oct 2002
Posts: 5,714
Likes: 6
From: Silver City NM
St. Jude Donor '05-'07
