ACL Race Series main bearings are trimetal engine bearings designed to withstand higher RPM conditions. Their combination of design, metallurgy and engineering is intended for high-performance engine applications.
This set is suited to crankshafts where consistent clearances and controlled oil flow to the conrod bearings are required.
- High-strength overlay plate with reduced thickness for improved fatigue properties
- Increased crush for improved bearing retention in the housing
- Elimination of flash plating on the back for improved heat transfer and increased grip in the housing
- Increased eccentricity to compensate for bore distortion at high RPM and assist in forming 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 maintain consistent clearances
Suitable for: Nissan Patrol II (Y60) / III (160) / III (Y61).
Engines: TD42, TD42T. Please check your vehicle’s engine code (registration document or VIN) before ordering; if in doubt, contact us and we will check for you.
Sizes
STD is the standard size for an unground crankshaft. Undersizes (−0.25 mm, −0.50 mm …) are for a reground crank, and “+0.025 mm clearance” (X) is for highly stressed engines. Your machine shop chooses the size after measuring.

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