Passed SMOG with ease - again - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1987-1991 Parley with regards to your 1987 to 1991 Bonneville, Olds 88 or Buick Le Sabre Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 08-17-2007, 03:01 PM   #1
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Default Passed SMOG with ease - again

Bonne' has 120k miles on it now. It could use a new IM gasket, and work on a few leaks, but it passed smog check with flying colors - again. This is the cleanest burning engines of all my cars.

Measured
Result = CO2 / O2 / HC / CO / NO
15mph : 15.0 / .06 / 3.0 / .01 / 32
25mph : 15.1 / .04 / 1.0 / 0.0 / 74
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Old 08-17-2007, 03:15 PM   #2
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Back in the day these engine were the lowest friction engines of the time.... They were also designed with emissions in mind... The piston rings were closer to the top of the piston to help reduce hydrocarbon emissions... When you put a functional O2, Good Cat and an engine that was designed to be a lower emissions engine.... You end up with a pretty clean burning motor...

Things improved with the L27'* and got even cleaner with the L36

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Old 08-17-2007, 04:08 PM   #3
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Yeah, even past 200k miles the SSE was one heck of a clean burning engine.
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Old 08-17-2007, 04:23 PM   #4
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mine passed with ease and she has well bout 300000 now she had 279000 when i got her tested
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Old 08-17-2007, 05:48 PM   #5
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Quote:
Originally Posted by buck912
mine passed with ease and she has well bout 300000 now she had 279000 when i got her tested
Now the question is were they shocked to see an engine that old with that many miles do so well or have they seen a lot of 3800'* run clean...

Lets face it, even tho the technology is old.... These were and still are Great engines

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Old 08-19-2007, 05:02 PM   #6
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damn straight
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Old 08-19-2007, 05:28 PM   #7
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mine was smogged once by its past owners and it passed with near perfect numbers too. gotta love a nice clean burning efficent car.
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Old 08-20-2007, 06:35 PM   #8
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Default SSE

I firmly believe my SSE runs better with age and miles on it. Emissions never even wimper.
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Old 08-20-2007, 07:07 PM   #9
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Thats because its finally broke in

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