Clevite MS-2218P-.50MM High Performance Main Bearing Set Undersize -.50mm

The Clevite MS-2218P-.50MM is a high-performance engine crankshaft main bearing set designed for demanding automotive applications. This P-Series bearing set features -.50mm undersize dimensions for use with reground crankshafts, providing the precise fitment needed after machining operations.

P-Series Performance Features:

• High crush design for maximum bearing retention in performance applications
• Reduced overlay thickness to prevent overlay fatigue and hen tracking
• Full groove design in upper shells to maximize oil flow to connecting rod bearings
• Optimized 180-degree upper shell grooving for superior bearing performance and oil film development
• Engineered eccentricity to narrow bearing contact patterns and increase rod bearing oiling
• Legendary Clevite TriMetal bearing construction for strength and durability

Technical Design:

Clevite engineering has proven that a 180-degree groove in the upper main shell provides the best overall bearing performance. This design maintains oil film thickness while efficiently supplying oil to connecting rod bearings. The ungrooved lower shells develop a thicker oil film for improved load capacity and extended bearing life under high-performance conditions.

Applications:

P-Series main bearing sets are ideal for performance engines experiencing extremely high RPMs that cause severe rod bore distortion. These bearings are particularly effective when rod bearing oil starvation is evident, typically indicated by surface polishing, smearing, or discoloration concentrated at the bearing's axial center. The higher eccentricity design ensures proper oil distribution throughout the lubrication system.

This undersize bearing set is specifically manufactured for crankshafts that have been ground -.50mm from standard diameter, ensuring proper clearances are maintained after crankshaft reconditioning.