ACL Race Series Performance Engine Bearings
The unique combination of design, metallurgy and engineering come together to deliver what drivers expect from high performance Tri-metal engine bearings.
Designed to withstand higher RPM conditions, ACL Race Series Engine Bearings are available for many of the popular 4, 6 & 8 cylinder applications and feature:
- 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 con-rod 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.
Rod Bearing Applications:
4B8320H: For all 48mm crank journals (Some older engines, non-turbos, and EJ22-Turbo)
4B8296H: For all 52mm crank journals (Most WRX/STi EJ20 & EJ25)
Main Bearing Applications:
5M8309H: For all engines with thrust bearing in #5 position (Most WRX/STi EJ20 & EJ25)
5M8297H: For all engines with thrust bearings in #3 position (Some older engines, non-turbos, and EJ22-Turbo)
*ALMOST all of the EJ25 USDM applications have had the thrust in the #5 position and a 52mm rod journal. Use this information at your own risk! *
|
