Cylinder wear is a process that leads to the deformation of cylinder walls into an elliptical shape. Such deformation appears as a result of friction between a pair of piston-cylinder. There are all causes of cylinder-bore wear.

Cylinder wear significantly hampers engine performance, as it prevents the circular piston rings from effectively sealing against the non-uniform cylinder walls.

The extent of this lateral force is directly related to the angle of the connecting rod. Consequently, longer connecting rods can diminish the magnitude of this lateral force and the resultant engine wear. However, there is a limitation on the maximum length of the connecting rod due to the engine block’s dimensions. The combined length of the stroke and connecting rod should not cause the piston to extend beyond the upper boundary of the engine block.