King Engine Main Bearings HP-Series,  

• The .015” thick top layer of the bi-metal bearing can be squeezed and worn up to .010” (vs tri-metal’s .0005”) without damaging the crank journals.
• 40 Vickers hardness withstands momentary high loads better than softer Babbitt’s Vickers hardness of 15-20.
• The thick top layer provides better macro-particle (>.00025”) embedability vs tri-metal Babbitt (.015” thickness vs .0005”).
• Temperature threshold is almost 30% higher than tri-metal (450ºF vs 350ºF).

Applications: high-load, short duration racing such as drag racing, tractor pulls, monster trucks, etc. Also for medium-load, long duration racing such as circle track engines using nodular cast iron crankshafts.