Wrist pin and method of reducing wear between members thereof, connecting rod, piston and methods of constructing same

A method of constructing a connecting rod for operable attachment to a piston, comprising:

• forming a connecting rod body;
• forming a small end bore in said body with a portion of said small end bore having a contour to allow relative rotation of a first wrist pin portion;
• and
• providing a feature in another portion of said small end bore to prevent relative rotation of a second wrist pin member.

A method of reducing wear between first and second wrist pin members of a wrist pin, comprising:

• collecting oil regardless of an existing clearance value between the wrist pin and a piston pin bore, and regardless of an existing clearance value between the wrist pin and a small end bore of a connecting rod;
• providing a contact area between the first and second wrist pin members to reduce contact pressure and enable improved lubrication and damping characteristics between the first and second wrist pin members;
• providing a lubrication interface between the first and second wrist pin members to maintain supplied oil with contact pressure between the first and second wrist pin members;
• and
• centralizing a rocking contact interface between the first and second wrist pin members such that the first and second wrist pin members can move relative to one another.