What does it mean that these bearings are undersized by 0.50mm?

An undersize bearing is used when the crankshaft journal has been machined down (ground) to remove imperfections or to achieve a specific size. The 0.50mm indicates how much material has been removed from the original journal diameter, and these bearings are made to fit that reduced size.

What is the tri-metal construction?

Tri-metal construction refers to a bearing design that uses three distinct layers of materials. Typically, this includes a steel backing for strength, a bronze-aluminum alloy layer for embeddability and strength, and a final overlay of a softer material like babbitt for excellent conformability and wear resistance.

Do I need to purchase anything else to install these bearings?

When rebuilding an engine, it's recommended to have a full set of engine bearings, including rod bearings, and to ensure proper oil clearance with a plastigage tool. Always refer to the manufacturer's service manual for the complete list of required parts and procedures.

ACL Engine Crankshaft Main Bearing Set VG30/VG33 - 4M2777A-.

Name: ACL Nissan V6 2960-3275cc VG30/VG33 1984-02 Engine Crankshaft Main Bearing Set
Brand: ACL
SKU: acl-acl-nissan-v6-2960-3275cc-vg30-vg33-1984-02-engine-crankshaft-main-bearing-s-t14-631173
Price: 25.11 USD
Availability: BackOrder

ACL Nissan V6 2960-3275cc VG30/VG33 1984-02 Engine Crankshaft Main Bearing Set

$25.11

On Backorder

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ACL Nissan V6 2960-3275cc VG30/VG33 1984-02 Engine Crankshaft Main Bearing Set

Key Features

Fits Nissan VG30E, VG30ET 3.0L, VG33E, VG33ER 3.3L V6 SOHC engines.
Designed for 1984-2002 model years.
Main bearing set for crankshaft support.
Features ACL's tri-metal construction for durability and performance.
This set is undersized by 0.50mm, intended for use with a ground crankshaft.

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Will this fit your vehicle?

Product Details

When you're rebuilding a Nissan V6 engine, especially the VG30 or VG33 series, getting the crankshaft bearings right is crucial for long engine life. These ACL main bearing sets are built to handle the demands of these engines, whether you're working on a Maxima, Pathfinder, or Frontier. They are designed to provide a solid foundation for your crankshaft, ensuring smooth rotation and proper oil clearance.

ACL uses a tri-metal construction in these bearings, which is a popular choice for performance and durability. This means they have multiple layers of different materials, each chosen for its specific properties like strength, embeddability, and low friction. This particular set is undersized by 0.50mm, which is important to note if you've had your crankshaft ground to match. Using the correct undersize bearing is key to achieving the proper oil clearance, which is vital for lubrication and preventing premature wear.

This set includes the main bearings needed for your VG30 or VG33 engine rebuild. Make sure to check your crankshaft's specifications to confirm if the 0.50mm undersize is the correct choice for your application. Proper installation, including cleaning and ensuring correct oil flow, is essential for these bearings to perform as intended.