Clevite MS-1060P Main Bearing Set High Performance P-Series

The Clevite MS-1060P is a high-performance main bearing set from the P-Series line, engineered specifically for racing and extreme performance applications. These bearings feature unique core part numbers distinct from standard passenger car applications, representing Clevite's oldest and most proven series of performance bearings.

Key Features:

• Full groove design in upper shells to maximize oil flow to connecting rod bearings
• High crush construction for maximum bearing retention in severe operating conditions
• Reduced overlay thickness to prevent overlay fatigue and hen tracking
• TriMetal bearing construction with hardened steel backing for superior strength
• Greater eccentricity to narrow bearing contact patterns and improve rod bearing lubrication
• Optimized 180-degree groove in upper main shell for best overall bearing performance

Application Guidelines:

P-Series main bearings are ideal for engines experiencing rod bearing oil starvation, typically indicated by surface polishing, smearing, or discoloration concentrated at the bearing's axial center. The full groove design ensures maximum oil delivery to connecting rod bearings in high-RPM applications. These bearings are recommended where higher eccentricity is desired to achieve optimal bearing contact patterns covering 2/3 to 3/4 of the bearing surface.

Technical Design:

Clevite engineers have extensively tested various grooving configurations to optimize main bearing performance. The 180-degree groove in the upper shell provides the best balance of oil film development and oil supply to rod bearings. Upper main shells carry the groove to supply connecting rods with oil, while lower shells remain ungrooved to maintain a thicker oil film for improved bearing life and greater safety margins.

This main bearing set represents proven performance bearing technology with high crush for retention, hardened steel construction for durability, and optimized grooving for superior lubrication in demanding racing and high-performance applications.