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Old 10-07-2012, 01:03 PM   #115
dknightd
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Join Date: Jul 2012
Location: upstate NY
Posts: 1,072
My Ride: 2002 330 cic
Quote:
Originally Posted by SeanC View Post
at constant maximum operating temperature of 96 degrees Celcius, this relation will apply: P1/V1 = P2/V2. Pressure will be doubled to 2.72 bars... Hah, that justifies the use of a 2-bar cap lol!

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Why do you assume a maximum operating temperature of 96 degrees Celsius?
That would be the ideal. Thermostat should be fully open by then. 96 in the block, less than that (on average) in the radiator. But if you are beating on the car in a hot climate it is very possible that the thermostat is always open, then the average temperature could exceed 96. If the average temp was 96 deg C then you would not need a pressurized system at sea level. I assume BMW designed a system that would work on any road, at any elevation, and any likely ambient temperature. But that type of system may not be ideal for some of us.
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