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Smog test...........HEAT!

posted by  mark h. on  Thu Feb 28 09:32 CST 2002
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last visit: Wed May 9 03:45 CST 2001
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Question: If the normal operating temp for say a B21 or b230 is 197 degrees. Would the No (PPM) read lower if you installed a 160 degree thermostadt?

mark h.








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    posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

    yes it would be lower but the hydrocarbon content would then be higher due to a incomplete combustion due to the lower temp.



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      posted by  someone claiming to be on  Wed Dec 31 18:00 CST 1969 [RELATED]

      Mr. Bear,
      Thanks! I pulled a 71 degree (160F) out of an 85 turbo I just got. I replaced it with an 87. What would the long term effect be on a motor run constantly under (cooler than) the correct operating temp?

      mark



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