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ACL Race Series Mini Inline 4 .25mm High Performance Main Bearing Set 1983+ - 3M2205H-.25

If you're looking to push your engine to its limits, the ACL Race Series Engine Bearings are definitely worth your attention. These aren't just any bearings; they’re engineered for those high-performance moments when your RPMs soar. Whether you're working with a 4, 6, or 8-cylinder engine, these bearings are designed to hold up under pressure, so you can focus on the thrill of the drive.

One of the standout features is the high-strength overlay plate, which has a reduced thickness. This isn’t just for show—it actually improves fatigue properties, meaning you can count on these bearings to withstand the rigors of racing without breaking a sweat. And let’s not forget the hardened steel backs on all the rod bearings. This adds a layer of support for the bearing lining and helps keep everything snug in the housing. You want your bearings to stay put, and these guys do the job well.

Another great aspect is the increased crush that enhances bearing retention. No one wants to deal with bearings that slip out of place, especially when you’re pushing your engine hard. Plus, ACL has eliminated flash plating on the back of the bearings. This clever move improves heat transfer, allowing your engine to run cooler and more efficiently. It also maximizes the grip between the bearings and their housing, which is a crucial detail when you’re racing.

What’s more, these bearings come with increased eccentricity to help cope with bore distortion at high RPMs. This feature also aids in forming hydrodynamic oil films, which is essential for keeping everything lubricated and running smoothly. And if you’re running a performance crankshaft, you’ll appreciate the enlarged ID chamfers on the bearing edges, designed to accommodate larger fillet radii.

When it comes to specifications, the ACL Race Series bearings are available in sizes STD, 001, and 010. They provide the reliability you need for those high RPM conditions, giving you peace of mind when you’re on the track or hitting the open road. Plus, with tight wall tolerances, you can maintain consistent clearances, which is crucial for performance engines.

For example, if you’re working on a BMC Mini Inline 4 from 1983 onwards, the 3M2205H-.25 set offers a .25mm oversized option that’s perfect for high performance. Overall, these bearings are a solid investment for anyone serious about their engine performance.

Other Part Numbers:
ACL #acl3M2205H-.25

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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