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Old 11-29-2006, 04:58 PM   #21
DRW
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Good points. I wonder if the auto manufacturers have to certify their cars using a more comprehensive test than the typical smog check that we see every year or two? In other words, are there different levels of compliance? OEM certification might be stricter, and consumer level smog checks are more lax?
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Old 12-01-2006, 12:49 PM   #22
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Originally Posted by cfg83
DRW and Ted -



Is the 1992-1995 Honda Hatchback VX highway speed "lean burn" mode running dirty? Granted, if emissions standards were less stringent, it might just be "conforming to it's time", but I keep thinking that there are lots of "lean burn lurkers" out there that are emissions compliant and running fine.



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Combine lean-burn, turbulence via grooves, organic-based fuels (or blends of same), politics, industry shufflings(wait! I said politics, yes?)...mix 'em all up , and... who knows what happens? Or, what you got? Me? I think I'll get another beer! -Ted Hart
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Old 12-07-2006, 12:21 PM   #23
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Quote:
Originally Posted by cfg83
DRW and Ted -



Is the 1992-1995 Honda Hatchback VX highway speed "lean burn" mode running dirty? Granted, if emissions standards were less stringent, it might just be "conforming to it's time", but I keep thinking that there are lots of "lean burn lurkers" out there that are emissions compliant and running fine.



CarloSW2
Hi! I never said / implied that Honda's lean-burn set-up wasn't emissions compliant! Of course it is! The tailpipe numbers may be down...but the exhaust gases going into the catalytic converter(s) are high(er) in NOx . 'Tis the converters which burn off the fumes.
Incidentally, Road & Track magazine called the converter technology... when they first reared their smelly heads... "catalytic perverters"...'cause they gave off (still?) hydrogen sulphide gas(the "rotten egg" smell) and sulphurous acid !
H2S ...hydrogen sulphide... is also lethal! It is chemically related to hydrogen cyanide! Put that in your gas chamber and smoke it!
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Old 12-07-2006, 05:12 PM   #24
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Quote:
Originally Posted by Ted Hart
Hi! I never said / implied that Honda's lean-burn set-up wasn't emissions compliant! Of course it is! The tailpipe numbers may be down...but the exhaust gases going into the catalytic converter(s) are high(er) in NOx . 'Tis the converters which burn off the fumes.
Incidentally, Road & Track magazine called the converter technology... when they first reared their smelly heads... "catalytic perverters"...'cause they gave off (still?) hydrogen sulphide gas(the "rotten egg" smell) and sulphurous acid !
H2S ...hydrogen sulphide... is also lethal! It is chemically related to hydrogen cyanide! Put that in your gas chamber and smoke it!
H2S is entirely unlike hydrogen cyanide (HCN). H2S toxicity is curious: low levels are non-toxic because the body metabolizes it. But abouv 1-2000 ppm, H2S is toxic enough to kill in a few breaths. On the other hand, HCN is cumulatively toxic, as the body doesn't metabolize it quickly. Smaller conituous doses can kill.
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Old 12-09-2006, 09:15 AM   #25
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HCN? H2S? H2SO4? It's all bad!

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Originally Posted by Sludgy
H2S is entirely unlike hydrogen cyanide (HCN). H2S toxicity is curious: low levels are non-toxic because the body metabolizes it. But abouv 1-2000 ppm, H2S is toxic enough to kill in a few breaths. On the other hand, HCN is cumulatively toxic, as the body doesn't metabolize it quickly. Smaller conituous doses can kill.
I see.... Perhaps the chemical encyclopedia from which I gleaned this info needs to be admonished...I did not make this up! H2S is a poison! Period! If one can smell it (the"rotten egg" gas) , the PPM ratios are into the red flag zone! We sha'n't even think about H2SO3...which readily goes to H2SO4 (sulphuric acid) when mixed with the water-ladden exhaust gases.
The source I used (years ago!) called H2S similar in toxicity behavior to the gas (HCN) used to execute Carl Chessman. HCN? Hmmm....
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Old 12-09-2006, 09:32 AM   #26
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Originally Posted by Ted Hart
H2S is a poison! Period! If one can smell it (the"rotten egg" gas)
You must be rite !
90 year old men often smell like rotten eggs , and sure enough , a few years later , DEAD. !

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