ACL Race Series Engine Bearings

ACL Race Series Engine Bearings

ACL manufactures performance engine bearings used in race engines across a wide range of motorsports disciplines, from sport compact and drift racing to oval track, drag racing, and land speed record applications. ACL Race Series bearings use a specialized tri-metal construction with a proprietary copper-lead alloy overlay that provides excellent load capacity, conformability, and wear resistance under the high RPM and cylinder pressure conditions of performance engines.

Popular ACL Race Series Bearing Applications

ACL Race Series bearings are available for main bearings, connecting rod bearings, and thrust washers across a broad range of American, Japanese, and European performance engines including Honda, Toyota, Subaru, Mitsubishi, Nissan, Ford, Chevrolet, and Dodge applications. ACL bearings are manufactured to OEM dimensional tolerances and are available in standard, 0.001-inch, 0.010-inch, and 0.020-inch undersize options to accommodate different crankshaft regrind specifications.

Why are ACL Race Series bearings used in performance engines?

ACL Race Series bearings are chosen for performance builds because their tri-metal construction tolerates the higher dynamic loads generated by increased boost pressure, higher compression ratios, and elevated RPM compared to OEM bearings. The copper-lead alloy overlay provides a sacrificial wear surface that embeds small debris particles rather than allowing them to score the journal, improving bearing longevity in competition environments where oil cleanliness cannot always be guaranteed during a race event.

Are ACL Race Series bearings suitable for street engines?

ACL Race Series bearings are suitable for street engines and are a popular upgrade for turbocharged and high-performance naturally aspirated street cars. They are manufactured to the same dimensional tolerances as OEM bearings and install without special procedures beyond standard engine assembly practices. Using ACL bearings in a street engine build provides additional load capacity and wear resistance over standard OEM replacement bearings at a modest cost premium.

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