Honda B18C H-Beam Connecting Rods

The Honda B18C H-Beam Connecting Rods are crafted from 4340 high tensile steel, engineered for high performance and exceptional durability. This ultra-lightweight design merges lightweight performance with proven reliability at elevated RPMs. The bushings are constructed from aluminum-silicon/bronze material, featuring a radial groove that acts as an oil reservoir. The rods incorporate a ribbed pin end that minimizes distortion under heavy inertial loads while reducing excess weight. They undergo shot peening to relieve material stress and are multi-stage heat treated to enhance rigidity. Tight tolerances in the production process ensure a precise fit while optimizing oil clearances, with controlled bend and twist characteristics.

Each rod is equipped with ARP 2000 cap fasteners rated at 220,000 psi, with an optional upgrade to ARP L19 material rated at 260,000 psi. The complete kit includes ARP moly and comprehensive fitting instructions.

Additional Machining Processes

• Dowel sleeves for perfect fit and accurate re-assembling
• Lipped Cap Relief for improved big-end integrity under extreme applications
• Grooves in Thrust Face for weight reduction

Technical Features of ZRP Connecting Rods

• Two-piece forging for enhanced strength
• Shot peening for improved fatigue life
• Aluminum-silicon/bronze bushing with radial groove
• Magnaflux inspection ensures consistency of the forged material meets high-quality standards
• Double ribbed caps for added support
• Multi-stage heat treatment for maximum strength, dimensional stability, and fatigue life
• CNC machining for superior tolerances, precise to 0.0002"
• Center-to-center maintained under 0.001" tolerance
• Finite Element Analysis (FEA) for computer-generated stress analysis of connecting rods
• Optimal balancing for weight-matched sets of ± 1 gram