Alfa 1750cc TBI I-Beam Heavy Duty Connecting Rods

The I-Beam "Heavy Duty" series connecting rods are designed for high horsepower and boost applications. Constructed from 4340 high tensile steel, these rods feature an optimized shape for superior performance and durability. The "straight cut" pin end enhances durability, making them suitable only for use with aftermarket pistons.

The bushings are crafted from AMPCO 18 material, providing excellent resistance to wear and fatigue, and include a radial groove for oil retention. The rods undergo shot peening to relieve stress and multi-stage heat treatment to increase rigidity. Tight production tolerances ensure perfect fitment and optimized oil clearances, with controlled bend and twist.

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 kit includes ARP moly and full fitting instructions.

Additional Machining Processes

• "Straight Cut" Pin End - Suitable for aftermarket pistons
• Dowel sleeves for perfect fit and accurate re-assembling
• Lipped Cap Relief for improved big-end integrity at extreme applications
• Grooves in Thrust Face for weight reduction

Technical Features of ZRP Connecting Rods

• I-Beam Shape for extra rigidity
• Two-Piece forging for great strength
• Shot Peening for improved fatigue life
• Magnaflux Inspection ensures high-quality material consistency
• 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 .001" tolerance
• Finite Element Analysis (FEA) for stress analysis of con rods
• Optimal balancing for weight-matched sets of ± 1 gram

These rods support a horsepower range of 200 HP per cylinder with ARP 2000 fasteners and 240 HP with ARP L19 fasteners.