ACL Bearings 1B1663H-10 Race Series Rod Bearing Undersize - 010

ACL Race Series performance engine bearings are recognized as a premier brand throughout the motorsports world. The 1B1663H-10 is a high-performance connecting rod bearing designed for Small Block Chevy and Honda applications with 1.890" rod journal sizing, manufactured with a .010" undersize for use with reground crankshafts.

Key Features:

• Hardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing
• High strength overlay plate with reduced thickness for improved fatigue properties
• Increased eccentricity to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films
• Elimination of flash plating on the back of the bearings to improve heat transfer through the bearings and to maximize the grip between the bearings and its housing
• Tight consistent wall tolerances to help you maintain consistent clearances
• Enlarged ID chamfers on bearing edges where required to accommodate large fillet radius on performance crankshafts

Bearings are .0005" thinner per half to give .001" extra clearance for standard sized crankshafts, making them ideal for high-performance racing applications where precise oil clearance control is critical. The unique combination of design, metallurgy and engineering provides Race Series performance bearings with the endurance and capability to perform where others cannot.

Application: Compatible with Small Block Chevy and Honda engines featuring 1.890" rod journals. The .010" undersize is designed for use with crankshafts that have been ground .010" undersize during rebuilding or reconditioning.

Note: Sold individually. Verify crankshaft journal diameter before ordering to ensure proper fitment and oil clearance.