time for 180* - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


1992-1999 Series I L27 (1992-1994 SE,SLE, SSE) & Series II L36 (1995-1999 SE, SSE, SLE) and common problems for the Series I and II L67 (all supercharged models 92-99) Including Olds 88's, Olds LSS's and Buick Lesabres Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

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Old 05-21-2006, 12:44 PM   #11
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Quote:
Originally Posted by klystronik
Quote:
Originally Posted by Bob Dillon
My car is a '99 and has a 195. Therefore, I don't know that they did. Perhaps some others here can chime in.
i could be thinking of the 2000+ models..but i swear someone mentioned they switched them to 180* in '99..no telling..heh
Put your 180 in,, it'* a good thing to do!!!!!!!
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Old 05-21-2006, 01:12 PM   #12
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Quote:
Put your 180 in,, it'* a good thing to do!!!!!!!
Please explain why.
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Old 05-21-2006, 01:30 PM   #13
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Quote:
Originally Posted by Bob Dillon
Quote:
Put your 180 in,, it'* a good thing to do!!!!!!!
Please explain why.
Because heat is a killer on a motor,,, it stresses everything, plays havic on oil, gaskets
Transmssions, etc., and HP , running a 180 in the summer relives some of that stess and
makes a engine a little more efficent and last longer............it'* a "Good thing to do"
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Old 05-21-2006, 01:41 PM   #14
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Quote:
Because heat is a killer on a motor,,, it stresses everything, plays havic on oil, gaskets Transmssions, etc., and HP , running a 180 in the summer relives some of that stess and
makes a engine a little more efficent and last longer............it'* a "Good thing to do"
I''m afraid you don't understand the purpose of the thermostat. It'* sole function is to determine the temperature that coolant is admitted to the engine, and no other.

Your car will not run "cooler" with a lower-temperature thermostat. Engine design, load, and cooling capacity determine engine operating temperature-not the thermostat.
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Old 05-21-2006, 01:46 PM   #15
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Quote:
Originally Posted by Bob Dillon
Quote:
Because heat is a killer on a motor,,, it stresses everything, plays havic on oil, gaskets Transmssions, etc., and HP , running a 180 in the summer relives some of that stess and
makes a engine a little more efficent and last longer............it'* a "Good thing to do"
I''m afraid you don't understand the purpose of the thermostat. It'* sole function is to determine the temperature that coolant is admitted to the engine, and no other.

Your car will not run "cooler" with a lower-temperature thermostat. Engine design, load, and cooling capacity determine engine operating temperature-not the thermostat.
I don't understaind a thermostat!!!!!!..........lol,,, it does too lower operating temps at
highway speeds and when your fan is on..i've been around a long time my good man.
and i;m not going to argue this usless point with you.
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Old 05-21-2006, 01:46 PM   #16
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Quote:
Originally Posted by Bob Dillon
Your car will not run "cooler" with a lower-temperature thermostat. Engine design, load, and cooling capacity determine engine operating temperature-not the thermostat.
mine does
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Old 05-21-2006, 01:51 PM   #17
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Quote:
I don't understaind a thermostat!!!!!!..........lol,,, it does too lower operating temps at highway speeds and when your fan is on..


Please explain your reasoning.
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Old 05-21-2006, 01:55 PM   #18
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Quote:
Originally Posted by harofreak00
Quote:
Originally Posted by Bob Dillon
Your car will not run "cooler" with a lower-temperature thermostat. Engine design, load, and cooling capacity determine engine operating temperature-not the thermostat.
mine does
Then I invite you as well to explain how a device that merely regulates the temp at which coolant is admitted to the engine affects operating temperature.

I would suggest that, if your coolant runs at or around 180 degrees with that thermostat installed, it would then mean that the coolant is not even near 212, the approximate boiling point of the water and coolant mix, and it would therefore be OK to open the radiator cap after a jaunt.

Care to try that?
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Old 05-21-2006, 02:02 PM   #19
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Bob, mine lowered my operating temps a tad, but then again, I also drilled mine.
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Old 05-21-2006, 02:04 PM   #20
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im not arguing...im stating facts.. before the 180 i ran at 195 constantly... now i run at 160-170 during grandma runs, and the most i have seen in 80* weather is 183*
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