Thermostat operation.....
Quote:
Originally Posted by tangofox007
The "extra flow" should have the opposite effect on a bypass system. The added flow would be from the radiator.
Now for the $64,000 question. Is an 80 degree thermostat supposed to maintain a coolant temperature of 80 degrees? Or does the thermostat temperature rating describe the temperature at which the thermostat begins to actuate? At what temperature does an 80 degree thermostat completely actuate?
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I just changed my thermostat to one that I purchased from my MB dealership, because I wanted exactly what was designed for the application......so I have an official MB thermostat, marked for 80 C.....
The thermostat is designed to open at 80 C to regulate the water entering the block for 80 C.....your temperature gages are reading a sensor in the cylinder head at approximately 90 C.....this is a normal 10 C temperature rise from water entering the block at 80 C and exiting at 90 C....
For those of you without an MB service manual.....there is a little arrow stamped on the edge of the MB thermostat.....this arrow points up.....
The thermostat that I removed was an AutoRad made in West Germany...had a slightly different construction and did not have an arrow.....
SB
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