Catalytic converter
Race Director
Joined: Nov 2006
Posts: 13,177
Likes: 7,781
From: Sunshine Coast, Queensland, Australia
2025 C3 of the Year Finalist - Modified
2024 C3 of the Year Finalist- Modified
2022 C3 of the Year Finalist - Modified
Cruise-In VIII Veteran
The car is over 40 years old. Anything is possible. Are you experiencing any symptoms that may cause you to believe this?
Thread Starter
Heel & Toe
Joined: Sep 2024
Posts: 23
Likes: 2
. I'm gonna have the converter removed nest week. Not sure if that is PART of the problem, but should run better without it? Any other ideas are welcome and thanks
Burning Brakes
Joined: Feb 2020
Posts: 904
Likes: 569
From: Central NJ
Some cats from that era would clog up, the internals would come loose and restrict the exit. The symptoms were the opposite of what you are experiencing, car would idle OK but start to bog down when the rpms went up. My 80 Camaro did it and the dealer told me they were seeing it happen fairly often, fixed under warranty.
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Cruising
Joined: Oct 2024
Posts: 14
Likes: 1
From: SE Wisconsin
My '78 ran good above 2000RPM, but below ran horrible. Removed ALL the emissions junk. runs perfect now.
I saved all the parts in case someone would be foolish enough to want a "period correct" car. No emission requirements here due to age and collector car status.
MY objective was to have a driver, even though its a pretty/somewhat rare car.
I didn't buy it just to look at...but that's just ME. But I don't honestly understand the bubble wrap mentality...JMHO.
I saved all the parts in case someone would be foolish enough to want a "period correct" car. No emission requirements here due to age and collector car status.
MY objective was to have a driver, even though its a pretty/somewhat rare car.
I didn't buy it just to look at...but that's just ME. But I don't honestly understand the bubble wrap mentality...JMHO.
Race Director
Joined: Nov 2006
Posts: 13,177
Likes: 7,781
From: Sunshine Coast, Queensland, Australia
2025 C3 of the Year Finalist - Modified
2024 C3 of the Year Finalist- Modified
2022 C3 of the Year Finalist - Modified
Cruise-In VIII Veteran
They do have scrap value. However, the sentiment is correct. Even if this isn't the cause of the current issue. The car will be better off without it.
HAHAHA!
2026 Loser of the Year
Joined: Sep 2013
Posts: 36,573
Likes: 7,016
From: New Or-leens Loo-z-anna
I put a Flow-Thru cat on it (for the Clean Air Folks) ....would still chirp tires in 1st and 2nd.
PLUS...no stinkin' eye burnin' exhaust fumes.
(Yep...I know...If you tune it right it doesn't stink)
Pro
Joined: Nov 2019
Posts: 604
Likes: 55
From: Dover, Delaware
I have a 78SA and many years ago I had my CC removed and had the shop install a set of aggressive mufflers and that was when things like could be done under the radar as the saying goes
However I did go one step further and purchased a new correct CC JIC the car goes to my daughter/grandson when I pass!!
JJ78
However I did go one step further and purchased a new correct CC JIC the car goes to my daughter/grandson when I pass!!
JJ78
Melting Slicks
Joined: Jul 2019
Posts: 2,279
Likes: 1,999
From: MA/NH Seacoast
Melting Slicks
Joined: Apr 2021
Posts: 2,661
Likes: 2,118
From: Minnesota
