Clevite CB-1631P High Performance P-Series Rod Bearing Set

The Clevite CB-1631P is a high-performance P-Series connecting rod bearing set engineered for demanding applications where reliability under extreme conditions is critical. These bearings are manufactured to meet or exceed OEM standards while incorporating advanced design features specifically for high-RPM and racing engines.

P-Series Performance Features:

• Maximum eccentricity design prevents rod bore close-in at extremely high RPMs
• Hardened steel back construction provides exceptional strength and fretting resistance
• High crush design ensures maximum bearing retention in the rod bore
• Reduced overlay thickness prevents overlay fatigue and "hen tracking"
• TriMetal construction with lead-tin-copper overlay for superior durability
• Precision-engineered chamfers for proper crankshaft fillet clearance

Application Guidance:

P-Series bearings are specifically designed for engines operating at extremely high RPMs where severe rod bore distortion occurs. These bearings are ideal when contact patterns show nearly full parting line to parting line shaft contact with standard bearings. The increased eccentricity of P-Series bearings narrows the contact pattern to the optimal 2/3 to 3/4 bearing surface coverage while maintaining proper oil film thickness.

Technical Construction:

Clevite's proprietary TriMetal bearing technology combines a hardened steel backing with an intermediate copper-lead alloy layer and a lead-tin-copper overlay. This construction protects vital engine components from friction damage while providing excellent conformability and embed-ability. The reduced overlay thickness in P-Series bearings specifically addresses the high-load conditions found in performance and racing applications.

Important Ordering Information:

This bearing set includes two bearing halves for ONE connecting rod. For a complete engine rebuild, order one set per cylinder (6 sets for a 6-cylinder engine, 8 sets for a V8, etc.).