Clevite MS-1117P Engine Crankshaft Main Bearing Set

The Clevite MS-1117P is a high-performance engine crankshaft main bearing set engineered to deliver superior reliability and durability in demanding applications. This precision-manufactured bearing set features Clevite's proven tri-metal construction, combining strength, conformability, and wear resistance for extended service life.

Key Features:

• Tri-metal construction with hardened steel backing for maximum strength
• Optimized 180-degree upper shell grooving design for efficient oil distribution to connecting rods
• Ungrooved lower shells provide thicker oil film and improved load capacity
• High crush design ensures positive retention in bearing bores
• Reduced overlay thickness prevents overlay fatigue and hen tracking
• Precision-engineered eccentricity for optimal contact patterns
• Suitable for performance and racing applications

P-Series Design:

This main bearing set belongs to Clevite's P-Series line, specifically engineered for high-performance engines. P-Series main bearings feature full grooving to maximize oil flow to rod bearings, making them ideal for applications where increased oiling to connecting rod bearings is critical. The high eccentricity design helps narrow bearing contact patterns and prevents rod bearing oil starvation, which typically manifests as surface polishing, smearing, or discoloration concentrated at the bearing's axial center.

Technical Specifications:

• Upper shells feature 180-degree oil groove for rod bearing lubrication
• Lower shells are ungrooved for maximum load-carrying capacity
• Hardened steel backing provides structural rigidity
• Lead-tin-copper overlay for excellent wear resistance
• High crush specification for secure retention

Applications:

The MS-1117P main bearing set is designed for engines requiring enhanced oil delivery to connecting rod bearings. Use P-Series mains when higher eccentricity is needed to optimize bearing contact patterns or when rod bearing oil starvation has been an issue. These bearings are particularly well-suited for performance street engines, bracket racing, and other applications where reliable lubrication and durability are paramount.

Clevite bearings are trusted by engine builders worldwide for their consistent quality, precise tolerances, and proven performance in both OEM and aftermarket applications. The MS-1117P continues this tradition with engineering refinements developed through decades of bearing technology advancement.