Cooling system: Difference between revisions
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[[image:841135.jpg| | [[image:841135.jpg|600px]] | ||
Things to note on this drawing | Things to note on this drawing: | ||
1. | 1. The radiator cap does more than just keep the coolant inside. It also adds extra pressure to the system, thereby raising the boiling point. Without a radiator cap, the boiling point of a 50:50 coolant and water mix is barely more than that of plain water. But add a typical 15 psi cap and the coolant doesn't boil until 265F. | ||
2. The direction of flow of the coolant is from the upper right hose to the lower left. You can see that the temperature of the water is significantly lower when it exits the radiator compared to its entry temp. T equals the temperature of the coolant in these measurements, so there is a 55 degree difference at idle, with a smaller differential just after stopping due to the cooling effect of the wind while moving. | |||
3. The fan comes on when the coolant gets above about 225F. It stays running until the coolant temperature falls back below 205F. | |||
4. | |||
==Reading the temp gauge== | ==Reading the temp gauge== | ||