First Generation Firebird-L Mailing List ......................................................................... I am a mechanical engineer :)
A Tstat will not lower the engine temperature, or raise it above the Tstat opening temp. It simply provides a minimum coolant operating temperature. A Tstat WILL NOT prevent overheating...... In my email, I stated "old cars in warm climates" don't need thermostats. New cars do. Cars in cold(35deg and below) also do. However, if you drive your Bird in Miami, or only during the summer in Anchorage, then the Tstat doesn't do much for you. The oil will still be pumped just fine, and any fuel economy impact due to a Tstat is imperceptible. In the old days, the manufacturers included Tstats in all vehicles because they had no control over where the vehicles were shipped and used. Also, a Tstat does not perceptibly slow down coolant flowing in the engine, thus pulling out a Tstat will not impact heat transfer. Mark Lueker 308 SYSTEMS Inc. 970-282-7006 www.308systems.com -----Original Message----- From: [email protected] [mailto:[email protected]]on Behalf Of Thomas R. Sent: Monday, August 24, 2009 12:49 PM To: 'First Generation Firebird-L' Subject: RE: [FGF] cooling question First Generation Firebird-L Mailing List ......................................................................... Lower coolant temperatures causes the block to stay cooler, and actually causes the rings to wear quicker as they travel up and down in the cylinder. These engineers worked thousands of hours to determine the correct temperature to run your car at. Don't you think if they thought your car should run without a thermostat, they would have done that? But the truth is, you NEED to heat up the block as fast as you can and then hold that temperature in the neighborhood around 195 to obtain maximum efficiency, minimal wear, and not overheat. Just like Goldilocks; not too hot, not too cold, but JUST right. -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Mlueker Sent: Monday, August 24, 2009 12:33 PM To: First Generation Firebird-L Subject: RE: [FGF] cooling question First Generation Firebird-L Mailing List ......................................................................... Remember, a thermostat is simply a closed valve in the cooling system designed to eliminate coolant flow until the core engine temperature reaches a desired level. Then it opens and allows coolant flow throughout the engine. Thus, a Tstat will do nothing to lower maximum engine operating temperatures, all it does is ensure the engine runs at a minimum temperature which is the Tstat temp. In fact, my view is that a Tstat on older cars is unnecesary unless you live in a cold climate. To reduce maximum operating temperature, you need to look at multiple variables - radiator size, radiator efficiency, radiator flow rate, coolant heat transfer capacity, internal engine coolant restrictions, water pump flow/capacity, airflow restrictions in front and behind the radiator, fan speed, fan flow/efficiency, shroud design, etc Thanks, Mark Lueker 308 SYSTEMS Inc. 970-282-7006 www.308systems.com -----Original Message----- From: [email protected] [mailto:[email protected]]on Behalf Of Hugo Tafel Sent: Monday, August 24, 2009 10:52 AM To: First Generation Firebird-L Subject: Re: [FGF] cooling question First Generation Firebird-L Mailing List ......................................................................... Maybe 245??? ________________________________ From: Bjorn Sefeldt <[email protected]> To: [email protected] Sent: Monday, August 24, 2009 9:21:59 AM Subject: [FGF] cooling question First Generation Firebird-L Mailing List .......................................................................... depends where in the country you are...if in Texas , 205 is not running hot in the summer...I run 190F thermostat and it stays at 190 most of the year, but summers are something else... and yes , you can disconnect the heater ,just plug it , but better yet put that hose into the block onto the other head and cool a little more re the gap for fan/shroud , it should be 50% in and 50% out of the shroud. and for the running temp of these engines, even 220F is not too much, they tend to run hot , and if I recall correctly the "idiot" light comes on at 145F..... Bjorn the old 69 vert./Houston, Tx/HALF member ------------------------------------------------------------------------ Submissions to Firebird-L: <[email protected]> Unsubscribe from Firebird-L: <[email protected]> Help: <http://FirstGenFirebird.org/firebird/Firebird-L.html> Classifieds: <http://FirstGenFirebird.org/ubb/> Owner Pictures: <http://FirstGenFirebird.org/show/> ------------------------------------------------------------------------ Submissions to Firebird-L: <[email protected]> Unsubscribe from Firebird-L: <[email protected]> Help: <http://FirstGenFirebird.org/firebird/Firebird-L.html> Classifieds: <http://FirstGenFirebird.org/ubb/> Owner Pictures: <http://FirstGenFirebird.org/show/> ------------------------------------------------------------------------ Submissions to Firebird-L: <[email protected]> Unsubscribe from Firebird-L: <[email protected]> Help: <http://FirstGenFirebird.org/firebird/Firebird-L.html> Classifieds: <http://FirstGenFirebird.org/ubb/> Owner Pictures: <http://FirstGenFirebird.org/show/> ------------------------------------------------------------------------ Submissions to Firebird-L: <[email protected]> Unsubscribe from Firebird-L: <[email protected]> Help: <http://FirstGenFirebird.org/firebird/Firebird-L.html> Classifieds: <http://FirstGenFirebird.org/ubb/> Owner Pictures: <http://FirstGenFirebird.org/show/>
