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Cooling Temp


brewz

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I would have guessed that I would see an internet article as the answer and this is the problem. There are too many answers on this site posted based on info read online which although can be full of good info, isn't full of experience and knowledge from engineering. To go back to vehicle at hand where the comment was directed that a colder thermostat would increase wear from being too cold. The 160 stat in an SSS with the clutch fan will commonly never see below 172 degrees and not over 200 with the majority of the temps being 175-185. The clutch fan increases engagement based on air temp going over the cltuch unit itself and by design will keep temps to no higher than 200 and not be engaged hardly at all at the 170's range the thermostat runs at. The electric fans in stock form don't come on until 227 for the first fan and 237 for the second fan. This allows the temps to be controlled just based on the 34" radiators ability to cool the motor. As for the stats themselves, the 160 stats are pretty much all made by motorad and the 160 stat for the LSx run 172 roughly fully cooled. Once in a while you'll see one that is ambitious that gets to 167 degrees, but in general a 160 stat for an LSx are 172 stats. With that being the case you'll usually see LSx engines run between 172-200 degrees. A coolant temperature of 172 degrees is not too cold to cause excessive wear as long as oil temperatures come up to temp. Oil temps cause more wear issue's that coolant temps. Boats are a great example of this. Many boats run 140-180 degrees as a result of running lake water for cooling the engines. Excessive wear is going to be more based on whether or not the oil comes up to temperature vs. engine coolant temperature.

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I would have guessed that I would see an internet article as the answer and this is the problem. There are too many answers on this site posted based on info read online which although can be full of good info, isn't full of experience and knowledge from engineering. To go back to vehicle at hand where the comment was directed that a colder thermostat would increase wear from being too cold. The 160 stat in an SSS with the clutch fan will commonly never see below 172 degrees and not over 200 with the majority of the temps being 175-185. The clutch fan increases engagement based on air temp going over the cltuch unit itself and by design will keep temps to no higher than 200 and not be engaged hardly at all at the 170's range the thermostat runs at. The electric fans in stock form don't come on until 227 for the first fan and 237 for the second fan. This allows the temps to be controlled just based on the 34" radiators ability to cool the motor. As for the stats themselves, the 160 stats are pretty much all made by motorad and the 160 stat for the LSx run 172 roughly fully cooled. Once in a while you'll see one that is ambitious that gets to 167 degrees, but in general a 160 stat for an LSx are 172 stats. With that being the case you'll usually see LSx engines run between 172-200 degrees. A coolant temperature of 172 degrees is not too cold to cause excessive wear as long as oil temperatures come up to temp. Oil temps cause more wear issue's that coolant temps. Boats are a great example of this. Many boats run 140-180 degrees as a result of running lake water for cooling the engines. Excessive wear is going to be more based on whether or not the oil comes up to temperature vs. engine coolant temperature.

 

 

Thanks for 'splainin that, Zippy.

 

Gotta love this site, some days. pepsicheer.gif

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Agreed... this is why this site is great. No SS was a good sport about being questioned about his statement. He then at least had some sort of info to show for his statement and then zippy chimed in with some very good experience and stats. This is how a discussion works folks. Take notes. Sometimes "discussions" turn into pissin matches. cheers.gif

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