Clevite MS-829HG High Performance Full Groove Main Bearing Set

The Clevite MS-829HG is a high-performance engine crankshaft main bearing set featuring full 360-degree grooving for maximum oil flow to connecting rod bearings. This bearing set belongs to Clevite's H-Series line, specifically engineered for competition engines and high-RPM applications including NASCAR-style racing.

H-Series Performance Features:

• Full 360-degree upper shell grooving (HG designation) for maximum oil delivery to rod bearings
• Medium eccentricity level optimized for high-RPM performance
• High crush design for maximum bearing retention
• Thin overlay construction to prevent overlay fatigue and "hen tracking"
• Enlarged chamfers provide superior crankshaft fillet clearance
• Non-flash plated for improved seating characteristics
• TriMetal construction with lead-tin-copper overlay for durability

Engineering Design:

While standard performance bearings use 180-degree upper shell grooving, the MS-829HG features full 360-degree grooving to address specific lubrication challenges. This design is ideal when rod bearing oil starvation is indicated by surface polishing, smearing, or discoloration concentrated at the bearing's axial center.

Recommended Applications:

• Competition engines experiencing rod bearing oil starvation
• Crankshafts with oversize fillets requiring additional clearance
• Medium to high RPM racing applications
• Engines where contact patterns with P-Series bearings prove too narrow

The H-Series represents Clevite's most versatile high-performance bearing line, offering an excellent balance of oil flow, bearing contact area, and durability. Contact patterns should ideally cover 2/3 to 3/4 of the bearing surface for optimal performance.