California exhaust
Thread Starter
5th Gear
Joined: Aug 2017
Posts: 5
Likes: 0
California exhaust
Rebuilding an 87's engine and just took off stock exhaust manifolds. There is no way those things are getting close to my new engine. What are other California drivers doing to pass visual inspection for smog certificate? Those block hugger hot rod manifold/headers with AIR tubes welded on and wrapped in fiberglass might work. The car is 30 years old , it should be on its third completely new exhaust system. Even the guys at Quicky Smog seem to be afraid of any modification. Please tell me my options, i would very much appreciate it.
Team Owner
Joined: Dec 1999
Posts: 34,873
Likes: 487
From: Lacey WA RVN 68-69
NCM Sinkhole Donor
From the Summit Racing site, it looks like the Hedman Elite Headers p/n 68487 are CARB certified under D-167-33 Unfortunately, they are pricey!
While that may be good news, these are full length headers and could impact how and where the OEM pre-cats will have to be located to pass a visual test. It's not hard to fab up a Y-pipe to connect to the main cat from the collectors but that still leaves the pre-cats to have to deal with.
While that may be good news, these are full length headers and could impact how and where the OEM pre-cats will have to be located to pass a visual test. It's not hard to fab up a Y-pipe to connect to the main cat from the collectors but that still leaves the pre-cats to have to deal with.
Team Owner
Joined: Oct 2004
Posts: 81,241
Likes: 3,063
From: altered state
St. Jude Donor '05
Edit
Hey never knew Hedman came out with those? Cool. CaliC4 could use a pair
Not sure what they do on the cat though its location has to be changed?
Hey never knew Hedman came out with those? Cool. CaliC4 could use a pair
Not sure what they do on the cat though its location has to be changed?
Last edited by cv67; Aug 29, 2017 at 04:40 PM.
Thread Starter
5th Gear
Joined: Aug 2017
Posts: 5
Likes: 0
From the Summit Racing site, it looks like the Hedman Elite Headers p/n 68487 are CARB certified under D-167-33 Unfortunately, they are pricey!
While that may be good news, these are full length headers and could impact how and where the OEM pre-cats will have to be located to pass a visual test. It's not hard to fab up a Y-pipe to connect to the main cat from the collectors but that still leaves the pre-cats to have to deal with.
While that may be good news, these are full length headers and could impact how and where the OEM pre-cats will have to be located to pass a visual test. It's not hard to fab up a Y-pipe to connect to the main cat from the collectors but that still leaves the pre-cats to have to deal with.
Le Mans Master
Joined: Mar 2004
Posts: 5,107
Likes: 171
From: Dublin CA
What ever headers you put on they MSUT have a California CARB number. Then you will have to have CATS that also have the CARB number on them. No numbers and NO PASS SMOG regardless if the sniffer says your clean.
Racer
Joined: Jul 2015
Posts: 313
Likes: 15
From: Modesto Ca
On cars that are not obd2(1996 up)I don't know if you need the carb certified cats or not.That whole y-pipe assembly with new cats would not be cheap.Sometimes Rock Auto has carb certified cats.I would do some research before buying cats.
