What does the '0.25 Oversized' mean for these rod bearings?

The '0.25 Oversized' or '0.25mm undersize' designation means these bearings are intended for use on a crankshaft that has been machined down by 0.25mm. This is a common practice during engine rebuilds to achieve proper clearance when the original crankshaft journals have worn or been ground undersize.

What type of engine is this bearing set for?

This ACL rod bearing set is specifically designed for the Nissan L-series inline-six engines, including the L20 (1998cc), L24 (2393cc), and L28 (2753cc) displacements. These engines were used in many classic Datsun and Nissan vehicles.

Are these bearings suitable for a stock engine rebuild?

While these are high-performance bearings, they are a solid option for a stock engine rebuild, especially if the crankshaft has been machined to the 0.25mm undersize. They offer improved lubrication and durability over standard bearings.

ACL Nissan L20/L24/L28 1998cc/2393cc/2753cc 6cyl 0.25 Oversized High Performance Rod Bearing Set

Specifications

Brand: ACL
Part #: 6B1171H-.25
UPC: 9315726453261

ACL Nissan L20/L24/L28 1998cc/2393cc/2753cc 6cyl 0.25 Oversized High Performance Rod Bearing Set

Name: ACL Nissan L20/L24/L28 1998cc/2393cc/2753cc 6cyl 0.25 Oversized High Performance Rod Bearing Set
Brand: ACL
Price: 142.49 USD
Availability: InStock

$142.49

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ACL has been making engine components for decades, and this high-performance rod bearing set for your Nissan L-series engine is one of their staples. This set is 0.25mm oversized.

Key Features

Fits 1970-1984 Nissan 240Z, 260Z, 280Z, 280ZX, 810, and Maxima.
Designed for Nissan L20, L24, and L28 6-cylinder engines.
0.25mm undersize rod bearing set for machined crankshaft journals.
Tri-metal construction offers strength and conformability.
Helps maintain oil pressure and protect the crankshaft.
Suitable for performance applications and engine rebuilds.

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Will this fit your vehicle?

Product Details

ACL has been making engine components for decades, and this high-performance rod bearing set for your Nissan L-series engine is one of their staples. These bearings are designed for engines with a 0.25mm undersize crank journal, which is common after a rebuild or when dealing with wear. They are built to handle the demands of performance applications, offering a solid option for anyone rebuilding or upgrading their L20, L24, or L28 engine.

This set is specifically made for the Nissan L20 (1998cc), L24 (2393cc), and L28 (2753cc) inline-six engines found in popular models like the 240Z, 260Z, 280Z, 280ZX, 810, and Maxima. ACL uses a specialized tri-metal material that provides good strength and conformability, helping to maintain oil pressure and protect the crankshaft under higher loads. The 0.25mm undersize means these are intended for crankshafts that have been machined down to compensate for wear or to achieve a specific clearance with these bearings.

When you're rebuilding an engine, especially one that will see spirited driving or performance modifications, getting the bearing clearances right is crucial. This ACL set is a well-built component that helps ensure your engine's rotating assembly stays properly lubricated and supported. Always refer to your vehicle's service manual for the correct installation procedures and torque specifications.