Clevite MS-2223P-.75MM High Performance Main Bearing Set Oversize

The Clevite MS-2223P-.75MM is a high-performance main bearing set designed for demanding applications where superior durability and precise fitment are critical. This bearing set features .75mm oversize construction to accommodate machined crankshafts while maintaining optimal clearances.

P-Series Performance Design:

• High crush design for maximum bearing retention in performance applications
• Reduced overlay thickness to prevent overlay fatigue and "hen tracking"
• Hardened steel backing for added strength and resistance to fretting
• Full groove configuration in upper shells to maximize oil flow to connecting rod bearings
• Optimized eccentricity to narrow bearing contact patterns and improve oiling

Advanced Bearing Technology:

Clevite main bearings utilize a 180-degree groove in the upper shell, which provides the optimal balance between oil delivery to connecting rods and maintaining a thick oil film for the crankshaft. The lower shells remain ungrooved, allowing the crankshaft to ride on a thicker oil film for improved bearing life and increased safety margin under high loads.

Ideal Applications:

• Engines experiencing extremely high RPM operation causing severe rod bore deformation
• Applications where increased oil delivery to rod bearings is needed
• Performance builds requiring higher eccentricity bearings
• Racing and competition engines with machined crankshafts

P-Series bearings are particularly effective in addressing rod bearing oil starvation, which typically manifests as surface polishing, smearing, and discoloration concentrated at the bearing's axial center. The TriMetal construction combines a hardened steel back with precision-engineered bearing material for exceptional strength and durability in high-performance applications.