Technical aspects of automobiles

Beat the Emissions Contest!

I just passed the Illinois emissions test yesterday, and I was wondering if
anyone can beat my scores.  If you have data from a recent "smog" test, see
how it compares to mine.  This data is from a 1985 Saab 900 Turbo, with a 2
liter 16-valve engine, and I’m close to 80,000 miles on the odometer.

At idle:  HC 21 ppm, CO 0.0%, CO+CO2 15%
2320 rpm: HC  9 ppm, CO .03%, CO+CO2 15.4%

Send your entry by e-mail to this address or to att!ixplode!dcn and I’ll
collect it for a couple of weeks & post the results.  I am also curious
about the standards Illinois has adopted: HC 220 ppm, CO 1.2% and CO+CO2 6%
for both high and low idle.  Since my results are much better, isn’t this
letting a lot of smoggy cars run around?

Maybe my feelings will change when I have to test my ’73 Sonnet later this year!

.
posted by admin in Uncategorized and have Comments (7)

7 Responses to “Beat the Emissions Contest!”

  1. admin says:

    In article <1992Jan10.035525.22…@balr.com> d…@balr.com (Dave Newkirk) writes:
    >I just passed the Illinois emissions test yesterday, and I was wondering if
    >anyone can beat my scores.  If you have data from a recent "smog" test, see
    >how it compares to mine.  This data is from a 1985 Saab 900 Turbo, with a 2
    >liter 16-valve engine, and I’m close to 80,000 miles on the odometer.

    >At idle:  HC 21 ppm, CO 0.0%, CO+CO2 15%
    >2320 rpm: HC  9 ppm, CO .03%, CO+CO2 15.4%

    How about this one.  Here’s my truck (at ide, no hiher RPM test taken.

    HC 1658 PPM  CO 14.4%  CO2 8%   (in our state, CO2 is measured separately.

    My brother had it tested or me, and when he came home he said

    "Yep, It’s smoggy!"

    Anyways, it has an older motor in it.  No emmisions, no cats, perf cam, no
    egr, etc.

    I suppose I coud tweak the ide mixture down.


    (~)/~)/~)  o  /    __  | I cant figure it out, when it said <HIT ANY KEY>,
     /  /  /  /  /_/  /__) | and I hit <SHIFT>, nothing happened.  Then I hit
    /  /  (__/__/  \_/\__/ | <CAPS LOCK>, and still nothing happened!!              

  2. admin says:

    >I just passed the Illinois emissions test yesterday, and I was wondering if
    >anyone can beat my scores.  If you have data from a recent "smog" test, see
    >how it compares to mine.  This data is from a 1985 Saab 900 Turbo, with a 2
    >liter 16-valve engine, and I’m close to 80,000 miles on the odometer.

    >At idle:  HC 21 ppm, CO 0.0%, CO+CO2 15%
    >2320 rpm: HC  9 ppm, CO .03%, CO+CO2 15.4%

    Hey, I can beat these scores no problem!
    At idle:  HC 175 ppm, CO ~2%   (specs are 500 ppm and 5.5%)
    High rpm:  no spec for my year

    Any higher bids?

    –Barry (bdr…@oxy.edu)

    (Lest you accuse me of crop dusting, I will tell you I live less than a mile
    away and walk to work when it is not raining.)

  3. admin says:

    >I just passed the Illinois emissions test yesterday, and I was wondering if
    >anyone can beat my scores.  If you have data from a recent "smog" test, see
    >how it compares to mine.  This data is from a 1985 Saab 900 Turbo, with a 2
    >liter 16-valve engine, and I’m close to 80,000 miles on the odometer.

    >At idle:  HC 21 ppm, CO 0.0%, CO+CO2 15%
    >2320 rpm: HC  9 ppm, CO .03%, CO+CO2 15.4%

    I was suprised when my 1988 Pontiac Grand Am (with Quad 4, and 46000miles) did
    2000 rpm:  HC  0 ppm, CO 0.0%

    The guy who did the test asked if I do a lot of highway driving.
    He said he has seen the result before (though not to offen.:-)


    Tom Tkacik
    GM Research Labs
    tka…@hobbes.cs.gmr.com
    tka…@kyzyl.mi.org

  4. admin says:

    In article <73…@rphroy.ph.gmr.com>,
     tka…@hobbes.cs.gmr.com (Tom Tkacik) writes:

    |> I was suprised when my 1988 Pontiac Grand Am (with Quad 4, and 46000miles)
    |> did
    |> 2000 rpm:  HC  0 ppm, CO 0.0%
    |>

    |> —
    |> Tom Tkacik
    |> GM Research Labs
       ^^^^^^^^^^^^^^^^

    My cynical side just had to ask, is that a showroom-stock unit maintained by
    Mr. Goodwrench according to the user manual, or a special package owned and
    babied and tweaked and self-maintained by a knowledgable enthusiast?

    BTW, since the average driver puts around 15k to 20k miles per year, that
    1988 Poncho does not seem to be in the "high mileage" category.

    –bruce
    (who regards any automobile subject to the Clean Air Act as essentially
     uninteresting!)

  5. admin says:

    In article 32…@nntpd.lkg.dec.com, mccul…@racy.zko.dec.com (Bruce McCulley) writes:

    >In article <73…@rphroy.ph.gmr.com>,
    > tka…@hobbes.cs.gmr.com (Tom Tkacik) writes:

    >|> I was suprised when my 1988 Pontiac Grand Am (with Quad 4, and 46000miles)
    >|> did
    >|> 2000 rpm:  HC  0 ppm, CO 0.0%
    >|>

    >|> —
    >|> Tom Tkacik
    >|> GM Research Labs
    >   ^^^^^^^^^^^^^^^^

    I may work for GM, but I own and maintain my own cars.  (My other car is a Miata.)

    >My cynical side just had to ask, is that a showroom-stock unit maintained by
    >Mr. Goodwrench according to the user manual, or a special package owned and
    >babied and tweaked and self-maintained by a knowledgable enthusiast?

    I have done no more maintainance than you would expect from a typical
    rec.auto.tech reader.  (Such as changing the oil every 3000 miles.)
    I also have autocrossed it, so it would get more frequent inspections,
    (but I ran it purely stock and have done nothing to it).
    And I do mostly highway driving.  The garage attendent told me that cars
    that are used mainly on the highway often run very clean.

    >BTW, since the average driver puts around 15k to 20k miles per year, that
    >1988 Poncho does not seem to be in the "high mileage" category.

    I never said it was.


    Tom Tkacik
    GM Research Labs
    tka…@hobbes.cs.gmr.com
    tka…@kyzyl.mi.org

  6. admin says:

    In article 74…@rphroy.ph.gmr.com, tka…@hobbes.cs.gmr.com (Tom Tkacik) writes:
    |>In article 32…@nntpd.lkg.dec.com, mccul…@racy.zko.dec.com (Bruce McCulley) writes:
    |>>
    |>>In article <73…@rphroy.ph.gmr.com>,
    |>> tka…@hobbes.cs.gmr.com (Tom Tkacik) writes:
    |>>
    |>>|> I was suprised when my 1988 Pontiac Grand Am (with Quad 4, and 46000miles)
    |>>|> did
    |>>|> 2000 rpm:  HC  0 ppm, CO 0.0%
    |>>|>

    I got the same results ( i.e. unmeasurable) on my ’85 Pontiac
    Parisienne, 4.3L V-6, 85K miles. AND it still gets 25+ mpg highway.

    No special treatment – twice a year tune up, oil change every
    six months or 5,000 miles. And has been driven almost exclusively
    for short trips (< 3 miles) for the last two years.

    WHen it gets time for the emmisions test, I give it a tune up; replace
    the plugs, filters, PCV valve, change the oil and clean the
    throttle body with carb cleaner. Then I trade cars with my wife and
    drive the Barge to work for a week to get some highway miles on
    it. Then I make sure that it is thouroughly warmed up with a minimum
    of 15 minutes highway driving immediately before getting it tested.

    |>>
    |>>|> —
    |>>|> Tom Tkacik
    |>>|> GM Research Labs
    |>>   ^^^^^^^^^^^^^^^^
    |>

    Yes, not only do Tom and I btoh work at GMR, but we share an office.

    Maybe there is a low emissions virus?  Seriously, there are many
    factors that affect the readings on an emisions test. One that
    is usually ignored is the testing procedure itself. While I
    don’t know much about that area technically, I have seen newspaper
    reports that the EPA was unhappy with the emissions test program
    in Michigan, that many test stations were producing low readings.


            Robert Haar               InterNet : rh…@gmr.com
            Computer Science Dept., G.M. Research Laboratories
    DISCLAIMER: Unless indicated otherwise, everything in this note is
    personal opinion, not an official statement of General Motors Corp.

  7. admin says:

     Unburnt Hydrocarbons : Yes

     CO2 : a bunch
     CO  : a bunch more
     C   : quite evident

     Holley secondary float valve unable to withstand fuel pressure. Dribbles fuel
    into secondary continuously.

     Maybe a fuel pressure regulator will help.

    ##########################################################################
    #Irresponsible rantings of the author alone. Any resemblance to persons  #
    #living or dead then yer bummin. May cause drowsiness. Alcohol may inten-#
    #sify this effect. Pay no attention to the man behind the curtain. Billy!#

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