Manufacturing method for connecting rod

A manufacturing method for a connecting rod, comprising:

• applying a first tensile load to an end portion of the connecting rod in a cross direction that intersects with a longitudinal direction, wherein the end portion is a longitudinal end portion of the connecting rod having a through-hole, and the first tensile load causes a precompression of the end portion;
• and
• fracture splitting the end portion into a rod portion of the connecting rod and a cap portion of the connecting rod by applying a second tensile load to the end portion in the longitudinal direction in a state where the precompression is applied to the end portion, wherein:
• the end portion includes first and second bolt holes that
• are separated from each other with the through-hole interposed between the first and second bolt holes and
• extend in the longitudinal direction;
• and
• when the precompression is applied to the end portion, first and second members and third and fourth members are used to apply the first tensile load to the end portion in the cross direction, the first and second members being inserted into the first and second bolt holes, respectively, from a first side, and the third and fourth members being inserted into the first and second bolt holes, respectively, from a second side.