Clevite MS-771G Engine Crankshaft Main Bearing Set

The Clevite MS-771G is a high-performance engine crankshaft main bearing set designed for demanding applications. This bearing set features precision-engineered construction to maintain optimal oil film thickness and protect critical engine components under high loads and RPM.

Key Features:

• TriMetal bearing construction for superior strength and durability
• Optimized groove design to balance oil delivery and bearing performance
• High crush design for maximum bearing retention
• Reduced overlay thickness to prevent overlay fatigue
• Engineered to develop proper hydrodynamic oil film during operation
• Upper shell features 180-degree groove for optimal connecting rod oiling
• Lower shells without grooving for maximum oil film thickness and bearing life

Bearing Technology:

Modern bearing design focuses on maintaining the critical oil film that separates the bearing surface from the crankshaft. As the crankshaft rotates, it pulls oil into the loaded area and rides on this pressurized film. Strategic groove placement in the upper shell provides necessary oil supply to connecting rod bearings while the ungrooved lower shell maximizes load capacity and bearing longevity where loads are highest.

Applications:

Clevite performance bearings are available in multiple series to match specific engine requirements. Series designations include P-Series for extreme RPM applications with maximum eccentricity, H-Series for NASCAR and competition engines with medium eccentricity and oversized fillet clearance, K-Series with TriArmor moly/graphite coating for enhanced protection, V-Series with lead-indium overlay for superior conformability, and M-Series micro bearings with babbitt lining for high-deflection applications. Select the appropriate series based on crankshaft specifications, RPM range, and bearing contact pattern analysis.

This main bearing set is ideal for performance rebuilds, racing applications, and high-output engine builds where precision and reliability are critical.