What is the difference between dry liner and wet liner?

The main difference between dry liners and wet liners lies in their construction and application in engine design. Dry liners are installed directly into the engine block and are typically made of cast iron or aluminum, providing a durable and lightweight solution. Wet liners, on the other hand, are surrounded by coolant and are often used in applications where engine cooling is critical; they are removable and allow for easier maintenance and replacement. This distinction affects factors like thermal efficiency, engine weight, and maintenance requirements.