ACL Bearings 4B1060H-020 Race Series Connecting Rod Bearing Set Ford Cosworth BDA BDB .020" Oversize

The ACL Bearings 4B1060H-020 Race Series Connecting Rod Bearing Set is engineered specifically for Ford Cosworth BDA, BDB, BDC, and BDD engines with a .020" (0.50mm) oversize specification. These high-performance trimetal bearings deliver race-proven durability and precision for engine builders and performance enthusiasts demanding superior reliability under extreme conditions.

Key Features:

• High-strength overlay plate with reduced thickness for improved fatigue resistance and durability
• Hardened steel backing on all rod bearings improves bearing lining support and retention in the housing
• Elimination of flash plating on bearing backs maximizes heat transfer and grip between bearing and housing
• Increased eccentricity compensates for bore distortion at high RPM and assists hydrodynamic oil film formation
• Increased crush for superior bearing retention under extreme loads
• Tight, consistent wall tolerances help maintain precise bearing clearances
• Improved material composition, dynamic thickness, heat conduction, and oil distribution

Technical Specifications:

• Shaft diameter range: 49.200-49.213mm (1.937"-1.938")
• Bearing tunnel size: 52.927-52.940mm (2.084")
• Overall length: 19.17mm (0.755")
• Wall thickness at crown: 1.84mm (0.072")
• Vertical oil clearance range: 0.034-0.076mm (0.0013"-0.0030")
• .020" oversize for crank journal grinding applications

ACL Race Series bearings are proven components in championship-winning engines across multiple racing disciplines including sport compact, NASCAR, IHRA, and NHRA competitions. Designed specifically for high-RPM, high-load engine builds requiring superior bearing capacity beyond standard OEM specifications.