NJ emissions

Well i took the T/a to inspection today and it failed for hc and co2. It was a ton closer then i thought it was going to be. They test here at 15 mph. I
estimate the motor makes about 400 horse. Just to review its a 355 holley street avenger carb 870, sportman II heads 11.5:1 compression, accel ignition, and a comp cams xtreme energy 274h cam. Its a 230/236 duration @.50 and .490 lift. Both emissions numbers were about 100 higher then they are allowed. Does anyone have any ideas on how to lower the emissions, my first thought was to lean the carb a bit, but it is tested at 15 mph. im not sure if it will make any difference. A friend said i could retard the timing a bit, does that make any sense? All aboard the Yankee express, next stop October.....
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How far out were both of the reading? Here in NYC (not far from you), that car would get a full dyno test all the way up to highway speed :).
Joe--ASE Certified Parts Specialist & 10th Ann.Club Tech Director '80 Carousel Red Turbo T/A, 26k orig. '79 "Y89" 400/4 speed 10th Ann. T/A, 57k orig '84 Olds 88 Royale Bgm 2 dr, 307 "Rocket" (lol), 141k and still going.... '80 T/A project car...
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im going to have to dig out the paper from my glove box, but it wasn't all that far off. I will update you tommorow on the exact # and the "allowable". No one has any idea's what to do....thats amazing. All aboard the Yankee express, next stop October.....
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ok here are the numbers. HC allowable is 140 my car 214 co% allowable .79 my car 3.12 co2 was fine at 12.3 02 was fine at .8 nox allowable 1018 my car 228
anyone have any ideas other than the bottle of guaranteed to pass from pep boys. I was thinking of changing the spark plugs moments before i drove over there. but the ones in there have less than 3,000 on them now All aboard the Yankee express, next stop October.....
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I am sure there is no limit to CO2, That and O2 they are just there for your information.
--
David Toft

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i think the cat takes care of the nox gas which i passed with flying colors. I was thinking of running cam2 100 octane for the next run. The place let the car idle for so long trying to make the motor smoke that the plugs fouled up pretty good, its a big duration cam over a stocker. I had the same problem a few years back when a private garage was out to sell me an emissions fix. they let the car idle for near a 1/2 hour. This set up has passed before, and im determined to have it pass again. All aboard the Yankee express, next stop October.....
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does the 02 reading of .8 mean the car is running to rich? The co # when its high also points to a to rich mixture as well the nox being so low, also pointing to to rich. I might be able to heat the spark up a bit by advancing the timing a nudge and leaning the fuel, and a wider spark plug gap. I also made a mistake the nox gas has almost nothing to do with the cat converter in my last post. All aboard the Yankee express, next stop October.....
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High NOx is generally EGR related, or cooling system related. Make sure your air dam up front is not cracked or missing as that will affect things greatly!
One year I had a hole in the AIR tube going to the cat on the 84 Olds. It passed, but it was a little high for me. I then noticed the pin hole. Changed the tube, the NOx dropped like a rock.
CO is partially burned fuel/combustion. HC is like a big gas leak, it is unburned fuel going out the tailpipe in essence.
What emission control(s) are missing from the vehicle? Joe--ASE Certified Parts Specialist & 10th Ann.Club Tech Director '80 Carousel Red Turbo T/A, 26k orig. '79 "Y89" 400/4 speed 10th Ann. T/A, 57k orig '84 Olds 88 Royale Bgm 2 dr, 307 "Rocket" (lol), 141k and still going.... '80 T/A project car...
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Pretty far out of the league. Do you have a non emission cam and other valve train setup? Did it ever pass the test before? Joe--ASE Certified Parts Specialist & 10th Ann.Club Tech Director '80 Carousel Red Turbo T/A, 26k orig. '79 "Y89" 400/4 speed 10th Ann. T/A, 57k orig '84 Olds 88 Royale Bgm 2 dr, 307 "Rocket" (lol), 141k and still going.... '80 T/A project car...
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and.490

Don't take this the wrong way. I had a customer who's car kept failing the emissions tests here, when I should not have. I blaime faulty tests, and idiototic opperates for it.
So what I did was to give the car 2 dead cylinders. I removed the Intake rocker arms on #2 & #7. Then replaced the plug wires with dummy units, so everything looked correct. The car passed. It went right back on the trailer and to the shop. I returned it to proper running order. 2 years later, with nothing done to it, not even spark plugs it passed. Charles
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there are no emission controls. just the cat. this motor was made to run not choke with all the bullsh*t they ram under the hood now All aboard the Yankee express, next stop October.....
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Which is half the problem why the car doesn't pass without trouble :).
The emission controls are there for a reason, and most times they DO NOT inhibit performance. A lot can be done with the stock emission stuff intact and it will run better, perform better AND still pass the tests with flying colors.
Joe--ASE Certified Parts Specialist & 10th Ann.Club Tech Director '80 Carousel Red Turbo T/A, 26k orig. '79 "Y89" 400/4 speed 10th Ann. T/A, 57k orig '84 Olds 88 Royale Bgm 2 dr, 307 "Rocket" (lol), 141k and still going.... '80 T/A project car...
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at this point im going to have to accept that you guys don't have any solid ideas on how to curb the emissions at all. I am quite sure the carb is out of adjustment. Its running super rich. After I adjust and retest i will post the new numbers. All aboard the Yankee express, next stop October.....
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1) Put the emission controls back. That is the key reason it's such a chore to get it to pass. 2) Adjust the timing. 3) Adjust the carburetor. 4) Make sure the engine is tuned up and all the secondary ignition stuff is right on the money.
I was behind a REALLY clean Z28 (1992) in NJ yesterday. I looked over and I recognized the driver---cousin of a girl I went to college with. The car is spotless and he's done some mods to it. Passes with flying colors in the NJ emission test.
(And the car MOVES :) ).
Joe--ASE Certified Parts Specialist & 10th Ann.Club Tech Director '80 Carousel Red Turbo T/A, 26k orig. '79 "Y89" 400/4 speed 10th Ann. T/A, 57k orig '84 Olds 88 Royale Bgm 2 dr, 307 "Rocket" (lol), 141k and still going.... '80 T/A project car...
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