Thermstat opening temperature
Discussion
I'm just replacing the thermostat on a car and thought I'd test it before fitting it (I've had my fair share of DOA therms!) Most of the time I just chuck them in a pan of boiling water and see if they open.
This time the therm I'm fitting says it operates at 105c. I've chucked it in a pan of boiling water and it hasn't opened or even started to open. Is that 105c the temperature at which it starts to open or the temperature at which it should be fully open? If it's the former, how does one test it considering I can't get water hotter than 100c?
This time the therm I'm fitting says it operates at 105c. I've chucked it in a pan of boiling water and it hasn't opened or even started to open. Is that 105c the temperature at which it starts to open or the temperature at which it should be fully open? If it's the former, how does one test it considering I can't get water hotter than 100c?
phumy said:
Why is it not good, the system is under pressure so its not going to boil, his engine might be designed to run at that temerature?
Read it again most engines some may run at these Temps but a lot 110c or so will start bringing on warning lights or at least move the dial into the red sectionHence why I asked what engine
Edited by Chris32345 on Monday 26th October 11:23
phumy said:
Chris32345 said:
What's it for as 105c sounds very high for the thermostat to open at?
Most engines usually operate around 90c and over 100c isnt good
Why is it not good, the system is under pressure so its not going to boil, his engine might be designed to run at that temerature?Most engines usually operate around 90c and over 100c isnt good
phumy said:
Why is it not good, the system is under pressure so its not going to boil, his engine might be designed to run at that temerature?
Glycol based antifreeze would be at the point of boiling by the time the stat is fully open. For the engine to operate at those temperatures it would need a more exotic coolant - and the engine itself would need to be designed for it too.Gassing Station | Home Mechanics | Top of Page | What's New | My Stuff