The Importance Of The Radiator/Pressure Cap On The Engine

The radiator/pressure cap...hmmm. Have you ever thought about how this little thing works? It can determine the life or death of your engine. So it's worth looking at. This is the reason why it's important to replace this little pressure cap when you install a remanufactured, rebuilt engine.
When the fluid in the cooling system heats up, it expands, causing the pressure to build up. The cap is the only place where this pressure can escape, so the setting of the spring on the cap determines the maximum pressure in the cooling system. When the pressure reaches 15 psi, the pressure pushes the valve open, allowing coolant to escape from the cooling system. When the radiator cap is working properly it can keep the engine from overheating. Of course this is just one key component in the cooling system, but it's an important one.
On the list of recommended parts in the engine installation kit that Roadmaster offers is the radiator cap.
More to come on the importance of parts in our engine installation kit.