California Smog problem 1976
Thread Starter
Instructor
Joined: Jan 2015
Posts: 203
Likes: 2
From: Port Costa CA
California Smog problem 1976
i replaced the side pipes on this car with 2 new Cats. one bank, one pipe one Cat. same on both sides. Cats were CARB approved. So I go to the smog shop and on the inspection come to find out the original 76 has both cylinder banks flowing into one pipe then it splits into 2 further down the line. The tech. tells me if he puts the probe into one side or the other the machine will know that it's only reading one bank not two and I would be flagged..
Are these machines really that smart? the tech. says even though my setup is more environmentally friendly the Jackasses in Sacramento who don't know squat about cars make no exceptions for that..
Changing it means a lot of cutting, fitting and welding wish I could find a friendly smog station.
Anyone want to chime in?
Are these machines really that smart? the tech. says even though my setup is more environmentally friendly the Jackasses in Sacramento who don't know squat about cars make no exceptions for that..
Changing it means a lot of cutting, fitting and welding wish I could find a friendly smog station.
Anyone want to chime in?
Le Mans Master
Joined: Jan 2001
Posts: 6,746
Likes: 1,387
I'd modify it so it uses only one cat for smog testing (bolt in). Once done, if you wish, you can then swap back. Probably the easiest thing to do.
i replaced the side pipes on this car with 2 new Cats. one bank, one pipe one Cat. same on both sides. Cats were CARB approved. So I go to the smog shop and on the inspection come to find out the original 76 has both cylinder banks flowing into one pipe then it splits into 2 further down the line. The tech. tells me if he puts the probe into one side or the other the machine will know that it's only reading one bank not two and I would be flagged..
Are these machines really that smart? the tech. says even though my setup is more environmentally friendly the Jackasses in Sacramento who don't know squat about cars make no exceptions for that..
Changing it means a lot of cutting, fitting and welding wish I could find a friendly smog station.
Anyone want to chime in?
Are these machines really that smart? the tech. says even though my setup is more environmentally friendly the Jackasses in Sacramento who don't know squat about cars make no exceptions for that..
Changing it means a lot of cutting, fitting and welding wish I could find a friendly smog station.
Anyone want to chime in?
Burning Brakes
Joined: Jan 2003
Posts: 961
Likes: 275
From: Frederick MD
i replaced the side pipes on this car with 2 new Cats. one bank, one pipe one Cat. same on both sides. Cats were CARB approved. So I go to the smog shop and on the inspection come to find out the original 76 has both cylinder banks flowing into one pipe then it splits into 2 further down the line. The tech. tells me if he puts the probe into one side or the other the machine will know that it's only reading one bank not two and I would be flagged..
Are these machines really that smart? the tech. says even though my setup is more environmentally friendly the Jackasses in Sacramento who don't know squat about cars make no exceptions for that..
Changing it means a lot of cutting, fitting and welding wish I could find a friendly smog station.
Anyone want to chime in?
Are these machines really that smart? the tech. says even though my setup is more environmentally friendly the Jackasses in Sacramento who don't know squat about cars make no exceptions for that..
Changing it means a lot of cutting, fitting and welding wish I could find a friendly smog station.
Anyone want to chime in?
Team Owner
Joined: Jan 2007
Posts: 53,648
Likes: 878
From: Southern Cal Ca
St. Jude Donor '22
Interesting.
Never thought about machine knowing about how many cyl fire in relation to exhaust.
One thing is the numbers would be half of what they should be and that maybe the issue.
Burning to clean? because only 1/2 engine is
being tested?
I have seeing testers put the sniffer wand into one then the other on dual ex, I am not sure why?
Anywho, a "referee" is your right and it used to be 500 bucks cap on getting car to pass as long as all equip was there.
I have to say never heard about this specific deal before.
Letter of law says "as factory" equipped and that you even have sidepipes is curious.
good luck
Never thought about machine knowing about how many cyl fire in relation to exhaust.
One thing is the numbers would be half of what they should be and that maybe the issue.
Burning to clean? because only 1/2 engine is
being tested?
I have seeing testers put the sniffer wand into one then the other on dual ex, I am not sure why?
Anywho, a "referee" is your right and it used to be 500 bucks cap on getting car to pass as long as all equip was there.
I have to say never heard about this specific deal before.
Letter of law says "as factory" equipped and that you even have sidepipes is curious.
good luck
Le Mans Master
Joined: Mar 2001
Posts: 5,739
Likes: 644
From: Lincoln, CA
Yes the system is testing the exhaust and needs to know how much to look for. You VIN tells the software what to test for.
Because stock it split after the cats they would use a dual probe. Really should not be any different at the smog shop.
Pay for a pre check and see what the results are. If your good have them retest and send the data to the DMV.
Because stock it split after the cats they would use a dual probe. Really should not be any different at the smog shop.
Pay for a pre check and see what the results are. If your good have them retest and send the data to the DMV.
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