Clevite MS-2248P-.50MM High Performance Main Bearing Set .50MM Undersize

The Clevite MS-2248P-.50MM is a high-performance main bearing set designed for demanding automotive engines. This P-Series bearing set features .50mm undersize dimensions for use with reground crankshafts, providing precision fitment and optimal clearances for race and high-performance applications.

P-Series Performance Design:

• High eccentricity design optimizes oil film thickness and bearing contact patterns
• Full groove upper bearings maximize oil flow to connecting rod bearings
• High crush construction ensures maximum bearing retention in the block
• Reduced overlay thickness prevents overlay fatigue and "hen tracking"
• TriMetal construction with hardened steel backing for superior strength
• Engineered without flash plating for improved bearing seating

Advanced Lubrication Technology:

Clevite's research-driven bearing design incorporates optimized 180-degree grooving in the upper main shells to balance oil delivery with maximum oil film protection. The ungrooved lower shells maintain the thickest possible oil film where loads are highest, providing superior bearing life and a greater safety margin under extreme conditions.

Ideal Applications:

• Extremely high RPM racing engines experiencing severe rod bore distortion
• Engines requiring increased oil flow to rod bearings
• Applications where narrower bearing contact patterns are desired
• Performance rebuilds using reground crankshafts (.50mm undersize journals)

P-Series bearings are recommended when bearing analysis shows nearly full parting line contact, indicating the need for higher eccentricity. These bearings help prevent rod bearing oil starvation, which typically manifests as polishing, smearing, or discoloration concentrated at the bearing's axial center.