ACL Race Series Engine Bearings - 5M1633H-.025

If you're looking for reliable performance upgrades for your Nissan Pulsar (1987-2005) or Nissan Sentra (1982-2018), the ACL Race Series Engine Bearings are a must-have. Engineered for the high demands of performance driving, these trimetal bearings are designed to withstand the rigors of higher RPM conditions, ensuring that your engine runs smoothly and efficiently even under stress.

Why Choose ACL Race Series Engine Bearings?

The unique blend of design, metallurgy, and engineering in these bearings provides the durability and performance that discerning drivers expect. Here’s a closer look at what makes these bearings stand out:

• High-strength overlay plate with reduced thickness enhances fatigue resistance, making them perfect for spirited driving and track days.
• Hardened steel backs on all rod bearings offer superior support for the bearing lining, ensuring they stay securely in place during high-performance applications.
• Increased crush improves bearing retention, so you can push your engine without worrying about failure.
• Elimination of flash plating on the back of the bearings improves heat transfer, maximizing the grip between the bearings and their housing.
• Increased eccentricity compensates for bore distortion at high RPM, assisting in the formation of hydrodynamic oil films for better lubrication.
• 3/4 grooved main bearings optimize the load-carrying surface area and oil flow to the conrod bearings, crucial for high-revving engines.
• Tight wall tolerances ensure consistent clearances, which is essential for engine longevity and performance.
• Enlarged ID chamfers accommodate large fillet radii on performance crankshafts, providing a snug fit and reducing the risk of damage.

Technical Specifications

• Size Options: STD, .025, .25, .50
• Oil Clearance: Standard
• Half Type: Upper & Lower
• Material: Tri-metal with hardened steel backs
• Min Std Shaft Size: 2.0847 in / 52.951 mm
• Max Std Shaft Size: 2.0852 in / 52.964 mm
• Min Std Tunnel Size: 2.2305 in / 56.654 mm
• Max Std Tunnel Size: 2.231 in / 56.667 mm
• Max Wall at Crown: 0.0720 in / 1.830 mm
• Max Overall Length: 0.787 in / 20.00 mm

Fitment

These bearings are specifically designed for:

• Nissan Pulsar (1987-2005)
• Nissan Sentra (1982-2018)

Customer Feedback

“I installed the ACL Race Series bearings in my 2003 Nissan Sentra SE-R, and the difference is night and day. The engine feels more responsive, and I can push it harder without worrying about reliability. Highly recommend these for anyone looking to upgrade!”

Upgrade your engine’s performance and reliability with the ACL Race Series Engine Bearings 5M1633H-.025. Designed for enthusiasts who demand the best, these bearings will help you take your Nissan to the next level.