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If you're diving into the world of high-performance engines, you know the importance of quality bearings. That’s where the ACL Race Series Engine Bearings come into play. These aren’t just any bearings; they’re a thoughtfully engineered blend of design and metallurgy that can handle the kind of RPMs that make your engine roar. Whether you’re working on a 4, 6, or 8-cylinder setup, these bearings are designed to take the heat and keep on performing.
One of the standout features of these bearings is the high-strength overlay plate. It's thinner than what you might find on standard options, which means it’s got better fatigue properties—perfect for those high-stress situations. Plus, the hardened steel backs on all rod bearings provide solid support for the lining and help keep everything locked in place, which is crucial when you’re pushing your engine to its limits.
And let's talk about crush—these bearings have an increased crush that really helps with retention. No one wants to deal with a bearing that slips out of place, especially when you're hitting those high RPMs. Speaking of high RPMs, these bearings come with increased eccentricity to counteract bore distortion, which is a game-changer for forming those hydrodynamic oil films that keep everything running smoothly.
Oh, and the 3/4 grooved main bearings? They optimize the load-carrying surface area and ensure that oil flows just right to the conrod bearings. Tight, consistent wall tolerances mean you can maintain the clearances you need for peak performance. Plus, there are enlarged ID chamfers on the edges, which are a nice touch for accommodating larger fillet radii on performance crankshafts.
Now for the nitty-gritty specs: you can get these bearings in sizes like STD, .025, .25, and .50, with standard oil clearance. They come as identical halves, made from tri-metal with hardened steel backs. When it comes to sizing, they fit a minimum standard shaft size of 1.7693 inches and maxes out at 1.7699 inches, with tunnel sizes ranging from 1.8896 to 1.8904 inches. The maximum wall thickness at the crown is 0.0596 inches, and they measure 0.6693 inches in overall length.
To give you an idea of fitment, these bearings are perfect for the Mazda 323 from 1986 to 2003, specifically for the 4B8351H-.50 ACL Mazda B6/BP/BP-T 1.6/1.8L with a .50mm oversized high-performance rod bearing set. If you’re looking to push your engine to the next level, these bearings are a solid choice.
Other Part Numbers:
ACL #acl4B8351H-.50
Proposition 65
⚠ WARNING:
Cancer and Reproductive Harm
https://www.P65Warnings.ca.gov
| Make Vehicle | Model | Year |
|---|---|---|
|
1986-2003 Mazda 323 |
323 | 1986-2003 |
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 RacingEngine 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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