Clevite MS-1061P Main Bearing Set High Performance P-Series

The Clevite MS-1061P is a high-performance main bearing set from the legendary P-Series line, engineered specifically for demanding racing and performance applications. These bearings feature unique core part numbers distinct from standard passenger car applications, delivering enhanced durability and oil flow characteristics critical for high-stress engines.

P-Series Performance Features:

• Maximum eccentricity design for optimal shaft contact patterns and load distribution
• Full groove configuration maximizes oil flow to connecting rod bearings
• High crush design ensures maximum bearing retention in the housing
• Reduced overlay thickness prevents overlay fatigue and "hen tracking"
• Hardened steel backing provides added strength and resistance to fretting
• Enlarged chamfers accommodate performance crankshafts with larger fillets

Engineered Oil Delivery:

This bearing set utilizes optimized grooving to balance oil film strength with connecting rod lubrication. The 180-degree groove in the upper main shell provides superior oil delivery to the rods while maintaining maximum oil film thickness in the loaded lower bearing area. This design prevents oil film disruption while ensuring adequate lubrication throughout the crankshaft assembly.

Application Guidelines:

P-Series main bearings are ideal for extremely high-RPM applications where severe rod bore distortion causes significant bearing close-in. They excel in situations requiring increased oil flow to combat rod bearing oil starvation, typically indicated by bearing surface polishing, smearing, or discoloration concentrated at the axial center. The higher eccentricity design narrows bearing contact patterns while providing enhanced oiling to connecting rod bearings.

Premium TriMetal Construction:

Built with Clevite's renowned TriMetal bearing technology, these main bearings combine a hardened steel back with an aluminum-tin lining and lead-tin-copper overlay. This construction delivers exceptional strength, conformability, and wear resistance essential for competition engines and high-performance street applications.

When extreme RPM and severe loading demand maximum oil flow and bearing retention, the Clevite MS-1061P P-Series main bearing set delivers proven performance backed by decades of racing success.