Colder thermostat
#11
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Joined: May 2001
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From: Rancho Palos Verdes, CA
Vehicle: 2008 Toyota Prius 2006 Suzuki SV650S
A higher pressure radiator cap will not help you run cooler. It will allow the coolant to reach a higher tempature before boiling, but it does nothing to lower the temp of the fluid.
At sea level, water boils at 212 F. If you pressurise that water to 1 bar, the water boiling point jumps to 230 degrees. Most rad caps are .6 bar. If you go to a .9 bar or 1 bar cap, you will raise the boiling point of the fluid, but not actually lower the tempature of the coolant itself.
At sea level, water boils at 212 F. If you pressurise that water to 1 bar, the water boiling point jumps to 230 degrees. Most rad caps are .6 bar. If you go to a .9 bar or 1 bar cap, you will raise the boiling point of the fluid, but not actually lower the tempature of the coolant itself.