Connecting rods
The forged alloy steel connecting rods have bushings to house the gudgeon pins. The gudgeon pin bushing and bearing shells for the connecting rod bearings are exchangeable. The gudgeon pin is floating mounted in the piston and connecting rod. The big end of the connecting rod is split during manufacture in a process where a laser first makes a notch in the goods across the hole, after which a press tool is applied to split the big end. The hole is subsequently machined to the correct dimension. This procedure provides a perfect fit between the cap and the connecting rod. The axial movement of the gudgeon pin is limited by circlips fitted into the gudgeon pin hole.