North American Turbocoupe Organization



Just passed emissions
Matt S Offline
Posting Freak
#1
Passed fine, but I like to run the numbers by everyone in case anything here indicates something. I have no idea what good or bad numbers indicate. It's the roller-dyno type of test.

Cruise RPM = approx 2,000rpm
Idle RPM = approx 920rpm

HC Cruise: 26ppm
HC Idle : 12ppm

CO% Cruise: .04%
CO% Idle : 0%

CO+CO2% Crusie: 15.84%
CO+CO2% Idle : 15.9%

O2% Cruise: .03%
O2% Idle : 0%
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Pete D Offline
Administrator
#2
Didn't the print out also list the allowable limits in each category? Ours do in Ohio. We have the roller dyno test.
Pete Dunham


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83zombi Offline
Senior Member
#3
In California the limits are moved without telling you. What was fine from the factory may no longer apply. They give you the limits on your print out then do a 'visual'. You can pass the sniff but if they don't like the looks of your setup they can still fail you. The 'visual' has grey area rules. It's part of the state assembly's attempt to legislate tullips out of the tail pipe. Ironically, I've had friends with too clean of CO2 which can raise Nitrus levels and fail the test. It's a tight rope out here.
83 dead bird, in pieces however I'm reading from the book of the dead, should be running soon.
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DonH Offline
Posting Freak
#4
I would be interested to know how they do the test on the rollers in your states. In Mass we supposedly have the California rules. Any car with OBD II just plugs into the computer so if your check engine light isn't on you pass. All earlier cars back to 84 have to twice pass the roller test in which the car is acclerated to 30mph following a computer generated graph. This, of course, is impossible for any of the test stations to do with a manual transmission. The TBird always passed the idle test that they had before but won't pass the dyno test. The previous version of this test for several years was totally inaccurate as the software and test machinery provided by the approved state supplier was bogus and certainly money changed hands with state officials. We a waiting for the state Enviromental Protection Division to show us how much the air has improved since they started the annual insult but they aren't talking. The only fun part of using Cal. law was that we were looking foward to seeing a fleet of zero emission battery powered cars driving around in a blizzard at -10*F but reality intruded when they could only go 50 miles on a hot day. Matt, you should move to another place where they don't do the test. I suggest Pasco cause when the wind is from the south and the dust is blowing any HC in the air is overpowered by the stench from the slaughterhouse.
1987 TC stock except ATR 2.5"
1983 Pontiac Transam T-top 5.7 T56 [email protected] top speed: 176mph
1978 Fairmont 2.3 4-spd Big-top S/W
1946 Willys CJ2A 134.2ci L4 No-top
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Jeff K Offline
Administrator
#5
Here we have the IM240 roller dyno drive cycle test performed by state operated test stations which only applies to pre OBDII vehicles. OBDII cars just get the PCM data port interfaced with the stations computer to check to be sure all the I/M monitors have completed successfully.... so you cant disconnect the batt to erase any codes that trip the CEL and hope for the best. We are tested every 2 years.

The test station guys here often have trouble with pre OBDII stick shift cars, as they cant seem to follow the "little green line" on the TV monitor for the drive cycle, and the test aborts, and they have to start over. We also have a "fast pass", which means that if emissions are really low during the first minute of the test, the test aborts and you pass. They also pressure test the gas cap at the end of the test. If I get a guy who can actually drive stick, I always pass on the "fast pass". Nice thing here is that we have NO underhood inspections.... all they care about is what comes out the tail pipes.

Only pre 1968 cars are exempt from the test here. Sometimes makes me wish I still had some of my 60s Mustangs and Falcons.

BTW, Matt, your numbers look good to me!
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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Matt S Offline
Posting Freak
#6
Thanks Jeff! Sounds like the same test here, gas cap and all. They did provide limits I was just curious if any of the numbers showed I'm running a bit too lean or rich or whatever. Those numbers are with 92 octane, and premium selected on the switch. I know there's been some debate.

We don't ever have to get out of our car here. They hand you a plug for your cig lighter that shows rpm, and then let you do the throttle *if it's rear wheel drive*. They do the front drive.
I learned my speedo is around 4mph off at 25mph (no surprise). I like the looks I get in the car. Some attendants know what it is and ask all sorts of questions. The one I got this time said "Ok put it in gear". I always start out in 2nd, so that's what I did. "No, put it in drive", he says. I look at him puzzled for a second and said "it's a 5 speed...2nd?" knowing that it says "5 speed" because the guy who tested the cap asked. My T shifter handle threw him off, he said.
Then he sat there looking all into and around the car for the 1-min on the roller at 25mph. LOL

And Don, I have no desire to live in pasco for stated reasons! I really don't mind the test. And is a 3" cat really all that restrictive for daily driving a stock engine?
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Jeff K Offline
Administrator
#7
Matt, I would say your motor is running just fine with those #s. No rich or lean problems.

Funny thing here is that they list standards on the print out in grams/mile, not % or ppm. They only tell you your numbers if you fluck any part of the test. If you pass, they dont tell you your numbers, they just print PASS for each gas on the form.... stupid. All I can guess is that my #s must be pretty good if it passes on the fast pass, assuming the tester can drive stick.

Once a few years back, I had a woman do the testing, and she left it in third gear for nearly the whole test, sometimes lugging the motor, and sometimes running it at 4000 RPM +, putting it in open loop for much of the test. Car failed by a little bit (which allows them to try the test again). I told her to actually try SHIFTING it the second time, and when she did, it passed on the fast pass. Morons.
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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DonH Offline
Posting Freak
#8
well, I got into a rant because every time I've had a car tested since they started this thing here in 1984 some problem has come up with the testing due to the stupidity of the testers. Here the tests are done in gas stations and garages of various types that are approved by the state. Generally speaking there is an incentive to fail a car so they can repair it. This is also a safety inspection. The testing is done every two years, the safety inspection every year. So the garages have a guaranteed $29 per year per car. Having an Inspection Station license is like being able to print money. So this being Massachusetts you have to become buddies with these guys, kiss a**, and show proper respect or your car is going to fail. There is a way around all this if you have connections with the proper people, so some guys can run around in new cars with all the controls removed while the rest of the shlubs....,you know what I mean. You should all come and visit Massachusetts to see the Big Dig tunnels, 16 billion and they leak.

I didn't mean to dis the people of Pasco or the TriCities, but imagine having to live in a place with the world's worst nuclear waste dump on one side and leaking nerve gas on the other yet the air is so clean. And all enviromental problems will be solved by IM programs and little electric cars? AAAARRRGGGGH. I so sick of being lied to.
1987 TC stock except ATR 2.5"
1983 Pontiac Transam T-top 5.7 T56 [email protected] top speed: 176mph
1978 Fairmont 2.3 4-spd Big-top S/W
1946 Willys CJ2A 134.2ci L4 No-top
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Matt S Offline
Posting Freak
#9
In those situations with an old car you do have to grease your way in usually.

back in the 80's California was like that, only no safety inspection. I had a 1973 b1600 truck with a 1976 1800 courier engine in it with high compression pistons, a header, and a ported head and cam from some guy. The guy winged it on the cam, and it was way too much for street, it idled like a Harley. That with the .38 dgass weber carb, and 2.5 inch cadillac exhaust, muffler turned backwards, I couldn't pass emissions ever. But it had TONS of torque. Loaded it with an 1800lb pallet of flyers for high-school band and it was surprising.
So I greased a guy, having a case of Anchor Steam beer in the bed all the time. He would hook up his bmw 318i behind the closed door and put my numbers in the emissions computer, then grab his case of beer Wink .
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DonH Offline
Posting Freak
#10
That's the way its done.
1987 TC stock except ATR 2.5"
1983 Pontiac Transam T-top 5.7 T56 [email protected] top speed: 176mph
1978 Fairmont 2.3 4-spd Big-top S/W
1946 Willys CJ2A 134.2ci L4 No-top
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