Clevite MS-2030P High Performance Main Bearing Set

The Clevite MS-2030P is a high-performance main bearing set engineered for demanding applications where reliability and oil film strength are critical. This bearing set features P-Series construction, specifically designed for extreme RPM conditions and applications requiring maximum oil flow to connecting rod bearings.

P-Series Performance Features:

• Full groove design in upper shells maximizes oil delivery to rod bearings
• High crush construction ensures maximum bearing retention under extreme loads
• Reduced overlay thickness prevents overlay fatigue and "hen tracking"
• Hardened steel backing provides added strength and resistance to fretting
• High eccentricity design narrows bearing contact patterns and improves oiling
• TriMetal construction delivers legendary Clevite durability

Application Guidelines:

P-Series main bearings are ideal for performance engines experiencing rod bearing oil starvation, indicated by surface polishing, smearing, or discoloration concentrated at the bearing's axial center. The full groove design prioritizes connecting rod lubrication in high-RPM applications where oil delivery is critical. These bearings work best with engines that show severe rod bore close-in at extremely high RPMs, typically indicated by nearly full parting line to parting line shaft contact.

Technical Specifications:

The bearing features optimized 180-degree grooving in the upper shell, which provides the best overall performance for main bearing applications. This design maintains a thick oil film on the lower shells while ensuring adequate oil supply to connecting rods through the upper shell groove. The reduced overlay thickness and high crush design make these bearings particularly suited for racing and high-performance street applications where bearing retention and longevity under stress are paramount.

For applications requiring additional clearance, extra clearance versions are available. P-Series bearings represent Clevite's oldest series of high-performance bearings, with proven performance in countless racing applications.