how important is thermostat?

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Pete - 10 Dec 2006 17:15 GMT

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?

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Kruse - 10 Dec 2006 17:46 GMT

> am rebuilding a couple older engines, one is 7 years, the other is 10 years old, to
> factory specs
[quoted text clipped - 4 lines]
> during the summer, temps are commonly at 38-40 C
> considering the outdoors, does the thermostat still serve a useful function?

VERY important. Keep it in.

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Tegger - 11 Dec 2006 00:38 GMT

> am rebuilding a couple older engines, one is 7 years, the other is 10
> years old, to factory specs
[quoted text clipped - 3 lines]
> in case it matters, where these cars are located, the temperature
> outside never drops below 22 C (74-75 F)

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.

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Tegger

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sjoblom1 - 11 Dec 2006 04:38 GMT

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.

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