how important is thermostat?

am rebuilding a couple older engines, one is 7 years, the other is 10 years old, to factory specs came to think, just how important is the thermostat in the coolant line/engine block connection?

in case it matters, where these cars are located, the temperature outside never drops below 22 C (74-75 F)

during the summer, temps are commonly at 38-40 C

considering the outdoors, does the thermostat still serve a useful function?

Reply to
Pete
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VERY important. Keep it in.

Reply to
Kruse

"Pete" wrote in news: snipped-for-privacy@mid.individual.net:

Well sure, but your ENGINE runs at 90C! Does the air temperature ever reach

90C where you are? Didn't think so.

Your engine can't reliably (and quickly) reach 90C without the thermostat to choke off fluid flow when it's too cool.

Reply to
Tegger

Modern engines need to operate at specific temps, for the sensors that tell the CPU how to adjust for fuel amounts and other things. You should install new ones during your rebuilds.

Reply to
sjoblom1

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