FORD part number R-FOR-004-I kit of 4 forged I-beam ZRP connecting rods with ARP bolts

The ZRP brand is a subsidiary of DRAKOS ENGINEERING, renowned for its experience in the design of high-performance mechanical parts. ZRP specializes exclusively in forged engine parts and has designed R-FOR-004-I forged connecting rods for your FORD CJBA, AOWA, AOBA, N4JA, N4JB engine. These rods are made of high-strength 4340 steel and feature reinforced ARP connecting rod bolts to withstand the increased inertia associated with higher engine speeds. Available in three ranges: - ARP 2000: resistant up to 220,000 psi (15,000 bar) - ARP L19: resistant up to 260,000 psi (15,000 bar) 18000 bars)

- ARP 625+: resistant up to 280000 psi (or 19000 bars)

The ZRP R-FOR-004-I forged connecting rod head for FORD CJBA, AOWA, AOBA, N4JA, and N4JB engines is equipped with a patented AMPCO 18 hot-extruded cupro-aluminum machined bushing before being ground to ensure oil film retention with your piston pin.

The design of this ZRP R-FOR-004-I forged I-beam connecting rod for FORD CJBA, AOWA, AOBA, and N4JA engines, N4JB gives it exceptional resistance to significant increases in power and torque from high boost pressures, as well as extreme uses like those we encounter with our customers whom we equip for their forged Drift and Run Dragster engine preparation.

Specifications:

• Connecting rod small end profile: flat
• Center distance: 146.25mm
• Small end diameter: 50023mm
• Small end width: 21.82mm
• Piston pin diameter: 21.00mm
• Connecting rod bolts supplied: ARP2000, ARP L1 or ARP 625+ (choose)
• Bolt thread Supplied: 515g
• Maximum permissible power: 800hp
  
  

Glossary:

1) Connecting rod foot
2) Foot diameter
3) Connecting rod body
4) Connecting rod bolt
5) Connecting rod big end
6) Nut
7) Connecting rod cap
8) Big end diameter
9) Center distance

When you convert your FORD CJBA, AOWA, AOBA, N4JA, or N4JB engine to a Forged, it is recommended to install forged connecting rods with tri-metal connecting rod bearings, in addition to replacing your original pistons with forged pistons.