ACL Race Series Main Bearings (Toyota 1UZFE/1UZFE) - Part # 5M8092H

Features

• Designed to withstand higher RPM conditions.
• High strength overlay plate with reduced thickness for improved fatigue properties.
• Hardened steel backs on all rod bearings to improve the support of the bearing lining and assist with bearing retention in the housing.
• Increased crush for improved bearing retention.
• Elimination of flash plating on the back of the bearings to improve heat transfer through the bearing sand to maximize the grip between the bearings and its housing.
• Increased eccentricity to compensate for bore distortion at high rpm and to assist in the formation of hydrodynamic oil films.
• 3/4 grooved Main Bearings to optimize bearing load carrying surface area and oil flow to the conrod bearings.
• Tight consistent wall tolerances to help you maintain consistent clearances.
• Enlarged ID chamfers on bearing edges where required to accommodate large fillet radius on performance crankshafts.

What is the maximum power rating of ACL Race Series bearings?

• Increasing red line engine speed
• Increasing turbo boost / cylinder pressure
• Changed timing & cam profiles
• Using low viscosity oils and/or high engine temperatures
• Changing crankshaft / connecting rod / piston design
• Modifying cylinder dimensions (boring out, stroking, decking cylinder head)