ACL Race Series main bearings are high-performance trimetal engine bearings designed for higher RPM conditions. Their combination of design, metallurgy and engineering supports the bearing lining under demanding operating conditions.
Increased eccentricity helps compensate for bore distortion at high RPM and assists in forming a hydrodynamic oil film. The 3/4-grooved main bearings optimize bearing load-carrying surface area and oil flow to the conrod bearings.
- Trimetal construction with a high-strength overlay plate of reduced thickness for improved fatigue properties
- Hardened steel backs on rod bearings to support the bearing lining and assist with retention in the housing
- Increased crush for improved bearing retention in the housing
- No flash plating on the back for improved heat transfer and increased grip between the bearings and housing
- Tight, consistent wall tolerances to help maintain consistent clearances
- Main bearing set ACL Race Series
Suitable for: Nissan 350Z I (Z33), Nissan Cima I (F50), Nissan Fuga I (Y51).
Engines: VK45DD, VK45DE, VK56DE, VK56VD, VK50VE. 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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