Clevite MS-829H-10 H-Series Performance Main Bearing Set

The Clevite MS-829H-10 is an H-Series performance main bearing set designed for NASCAR-type racing and all forms of competition engines. This bearing set features the proven Clevite 77 TriMetal construction with medium eccentricity, high crush retention, and a hardened steel back for maximum durability under extreme racing conditions.

H-Series Performance Features:

• Medium eccentricity design optimized for medium to high RPM racing applications
• Standard 180-degree upper half grooving for optimal oil film development and rod bearing lubrication
• High crush design ensures maximum bearing retention in the housing
• Thin overlay construction prevents overlay fatigue (hen tracking) under racing loads
• Enlarged chamfers provide superior crankshaft fillet clearance
• No flash plating on steel back for improved seating and heat transfer
• Hardened steel backing for added strength and fretting resistance

Advanced Bearing Technology:

Clevite H-Series bearings utilize optimized grooving design based on extensive performance research. The 180-degree groove in the upper main shell provides the ideal balance between connecting rod oil supply and oil film thickness. This design maximizes the oil film on the loaded lower bearing half while ensuring adequate lubrication to the connecting rods. Unlike older full-grooved designs, the ungrooved lower shell maintains a thicker oil film for improved load capacity and bearing longevity.

Application Guidance:

H-Series bearings are the recommended starting point for most performance engine builds. Use these bearings with crankshafts featuring oversize fillets and in engines operating in the medium to high RPM range. The medium eccentricity design produces ideal contact patterns covering approximately 2/3 to 3/4 of the bearing surface. If contact patterns obtained with higher eccentricity P-Series bearings are too narrow, H-Series bearings provide the proper balance of load distribution and oil film development.

The -10 suffix indicates this bearing set is manufactured to .010 inch undersize specifications for use with reground crankshafts. Clevite 77 bearings are trusted by professional engine builders and racers worldwide for their consistent quality and proven performance under the most demanding racing conditions.