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ACL High Performance Rod Bearing Set for BMW 1.6L W11B16, Standard Size, Tri-metal - 4B2902H-STD
ACL High Performance Rod Bearing Set for BMW 1.6L W11B16, Standard Size, Tri-metal - 4B2902H-STD - Image 2 ACL High Performance Rod Bearing Set for BMW 1.6L W11B16, Standard Size, Tri-metal - 4B2902H-STD - Image 2

If you're diving into the world of high-performance engines, you’ve probably heard of ACL Race Series Engine Bearings. These aren’t just any bearings; they’re crafted with a mix of smart design, solid metallurgy, and engineering know-how. Built for those who push their engines to the limit, these bearings are perfect for 4, 6, and 8-cylinder setups that crave higher RPMs without breaking a sweat.

What Makes Them Stand Out?

  • High Strength Overlay: The overlay plate is thinner, which might sound counterintuitive, but it actually enhances fatigue resistance. Less weight means better performance!
  • Hardened Steel Backs: Each rod bearing comes with a hardened steel back. This not only supports the bearing lining but also helps keep everything snug in its housing.
  • Increased Crush: This feature boosts bearing retention, so you can count on them staying put even when the engine’s roaring.
  • No Flash Plating: By skipping the flash plating on the back, heat transfer improves significantly. This means better grip between the bearings and housing, which is crucial when you’re pushing the limits.
  • Increased Eccentricity: This is a fancy way of saying these bearings can handle bore distortion at high RPMs. They help form hydrodynamic oil films, which is vital for smooth operation.
  • 3/4 Grooved Main Bearings: This design optimizes the load-bearing surface area and ensures oil flows where it’s needed most—directly to the conrod bearings.
  • Tight Tolerances: You want consistent clearances, and these bearings deliver with precise wall tolerances.
  • Enlarged ID Chamfers: The edges are designed to fit performance crankshafts with larger fillet radii, making installation a breeze.

Specifications You Should Know

  • Sizes Available: STD, .025, .25
  • Oil Clearance: Standard
  • Half Type: Identical Halves
  • Material: Tri-metal with Hardened Steel Backs
  • Min Std Shaft Size: 1.8107 in / 45.992 mm
  • Max Std Shaft Size: 1.8113 in / 46.008 mm
  • Min Std Tunnel Size: 1.9291 in / 49.000 mm
  • Max Std Tunnel Size: 1.9299 in / 49.020 mm
  • Max Wall at Crown: 0.0586 in / 1.489 mm
  • Max Overall Length: 0.679 in / 17.25 mm

For those running a BMW W11B16 1.6L, this standard size high-performance rod bearing set (4B2902H-STD) is a solid choice. It’s all about keeping your engine running smoothly and efficiently, especially when you’re pushing it hard. Trust me, you’ll feel the difference when you hit the gas.

Other Part Numbers:
ACL #acl4B2902H-STD

Proposition 65

⚠ WARNING: Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov

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Who is ACL?

ACL is a company that specializes in manufacturing and distributing high-quality engine bearings that have played a key role in the Australian automotive parts market. 

Based in Launceston, Tasmania, Australia, the company has been in the business for more than 70 years and has become the leading brand when it comes to its market segment.

Throughout the years, ACL has consistently provided top quality products and has become the equipment supplier of multiple Automotive brands such as Lancia, Mazda, Mini, Mitsubishi, Nissan, Peugeot, Subaru, Toyota, Volvo, Suzuki, Renault, SAAB, and more.  ACL also provides a replacement product range used by the aftermarket industry.

The company ensures that it maintains its high level of standard by employing manufacturing processes that are ISO certified. They also use the industry’s most advanced tooling equipment and designing software that allows them to create products that are superior in quality. ACL has been known worldwide to create bearings that are durable, innovative, and precise.

ACL also offers bearing used for high-performance applications. The company has been involved in motorsport racing since the 1960s and has manufactured bearings used in Brabham Formula 1. Today, their products are being used in different racing disciplines such as the Australian Supercar Championship, Drag racing, Driftings, and Rally.

Purchase ACL Bearings at Vivid Racing

Engine Bearings are a critical component of a vehicle and should not be overlooked. If you want to make sure that what you get is something you could rely on, then ACL is the brand for you. With over 200 engine applications, whether it’s an American, Australian, European, or Asian made vehicle, ACL got you covered. Visit Vivid Racing and check out their list of bearings that would fit your specific needs.

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