Cooling issues 69 Dart GTS 340
Increasing the pressure of the coolant raises the boiling point. That is improved the ability of the coolant to carry heat away from the cylinders.
With the system open to atmosphere, the coolant's boiling point is lower. Lets say its just plain water with a boiling point of 212 F.
When the coolant next to a cylinder hits 212° the vapor bubbles can push away liquid coolant. This especially happens if the little bubbles join into big ones.
That results in less coolant and super hot vapor (steam) in the system.
I'll give it shot. I haven't had to explain this or think about it in a while.
Increasing the pressure of the coolant raises the boiling point. That is improved the ability of the coolant to carry heat away from the cylinders.
With the system open to atmosphere, the coolant's boiling point is lower. Lets say its just plain water with a boiling point of 212 F.
When the coolant next to a cylinder hits 212° the vapor bubbles can push away liquid coolant. This especially happens if the little bubbles join into big ones.
That results in less coolant and super hot vapor (steam) in the system.
Caps have their pressure painted or stamped into them.
