Clevite MS-829H-20 H-Series Performance Main Bearing Set

The Clevite MS-829H-20 is an H-Series performance main bearing set designed for high-performance and competition engines. This bearing set features a medium level of eccentricity, high crush for maximum retention, and a hardened steel back construction with thin overlay for enhanced durability under racing conditions.

H-Series Design Features:

• Medium eccentricity design optimized for medium to high RPM applications
• Enlarged chamfers provide greater crankshaft fillet clearance
• Manufactured without flash plating for improved seating characteristics
• Standard 180-degree upper half grooving for optimal oil distribution
• Thin overlay construction prevents overlay fatigue and hen tracking
• High crush design ensures maximum bearing retention in the bore

Application Guidelines:

H-Series bearings are the ideal starting point for most performance engine builds, offering a balance between the aggressive eccentricity of P-Series and the conformability of other Clevite bearing lines. Use these bearings with crankshafts that have oversize fillets and in engines operating in medium to high RPM ranges. Contact patterns should ideally cover 2/3 to 3/4 of the bearing surface for optimal performance.

Performance Benefits:

• Developed primarily for NASCAR-type racing applications
• Suitable for all types of competition engines
• TriMetal construction provides strength and durability
• Optimized oil film thickness for improved bearing life
• Reduced overlay thickness prevents fatigue under severe operating conditions

The 180-degree groove design in the upper main shell has been proven through extensive testing to provide the best overall performance, delivering adequate oil supply to connecting rod bearings while maintaining maximum oil film thickness in the loaded lower bearing shell.