ACL Race main bearings for Nissan SR20DET / SR20DE

ACL Race main bearings are tri-metal engine bearings designed for operation at higher RPM. Their construction combines a high-strength overlay plate, increased crush and greater eccentricity for a more stable hydrodynamic oil film.

The main bearings feature 3/4 grooves to balance bearing load-carrying surface area and oil flow to the conrod bearings. This set is also available with 0.025 mm extra clearance.

• Tri-metal construction with a high-strength overlay plate of reduced thickness
• Increased crush for improved bearing retention in the housing
• Increased eccentricity to compensate for bore distortion at high RPM
• 3/4 grooves to optimize bearing load-carrying surface area and oil flow
• Tight, consistent wall tolerances to help maintain consistent clearances
• 0.025 mm extra clearance in this bearing set

Suitable for: Nissan 100NX I (B13), Nissan 200SX I (S13).

Engines: SR20DET, SR20DE. 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.