Clevite MS-1596P Engine Crankshaft Main Bearing Set

The Clevite MS-1596P is a high-performance engine crankshaft main bearing set designed for demanding applications. This P-Series bearing set features full groove design in the upper shells to maximize oil flow to connecting rod bearings, making it ideal for engines experiencing rod bearing oil starvation or requiring enhanced lubrication at high RPM.

P-Series Performance Features:

• Full grooved upper main shells for maximum oil delivery to rod bearings
• High crush design for superior bearing retention in performance applications
• Reduced overlay thickness to prevent overlay fatigue and hen tracking
• Hardened steel backing for increased strength and fretting resistance
• Higher eccentricity to narrow bearing contact patterns and optimize load distribution
• Tri-Metal construction for exceptional strength and durability

Technical Design:

Clevite's engineering research demonstrates that a 180-degree groove in the upper main shell provides optimal bearing performance. This design maintains the critical oil film thickness while ensuring adequate oil supply to connecting rods. The lower main shells remain ungrooved, allowing the crankshaft to develop a thicker oil film for improved load capacity and extended bearing life under high-stress conditions.

Recommended Applications:

Use the MS-1596P P-Series main bearing set when extremely high RPMs cause severe rod bore distortion, typically indicated by nearly full parting line-to-parting line shaft contact. This set is also recommended where rod bearing oil starvation is evident through polishing, smearing, or discoloration concentrated at the bearing's axial center. The full groove design addresses these conditions by prioritizing maximum oil flow to the connecting rod bearings.

P-Series bearings represent Clevite's original high-performance bearing line, proven in countless racing and performance applications. The unique core part numbers distinguish these from standard passenger car bearings, ensuring you receive components specifically engineered for high-performance engine building.