What does the +0.25mm sizing mean for these bearings?

The +0.25mm designation indicates that these bearings are 0.25mm undersize compared to standard size. This is used when the crankshaft journals have been machined down by 0.25mm to clean up wear or damage, ensuring a proper fit and oil clearance.

What is the construction of these main bearings?

These bearings feature a bimetal construction, utilizing an aluminum base. This type of construction is known for its good heat dissipation and durability in engine applications.

Does this set include everything needed to replace the main bearings?

This product is a crankshaft main bearing set. It typically includes the necessary main bearings for your engine. It's always a good idea to consult your vehicle's service manual or the manufacturer's instructions to confirm if any additional seals or hardware are recommended for installation.

Specifications

Brand: King Engine Bearings
Part #: MB7732AM0.25
UPC: 611500240416

King Engine Bearings Datsun L28 (Size +0.25mm) Crankshaft Main Bearing Set

Name: King Engine Bearings Datsun L28 (Size +0.25mm) Crankshaft Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-datsun-l28-size-0-25mm-crankshaft-main-t14-190105
Price: 85.80 USD
Availability: BackOrder

$85.80

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Fits 1977-1981 Nissan 810. King Engine Bearings Datsun L28 crankshaft main bearing set, 0.25mm undersize, for engine rebuilding.

Key Features

Fits 1977-1981 Nissan 810, 1970-1973 Nissan 240Z, 1974-1975 Nissan 260Z, 1981-1983 Nissan 280ZX, and 1981-1984 Nissan Maxima.
Designed for the Datsun L28 engine.
Crankshaft main bearing set.
Size is +0.25mm (0.25mm undersize).
Features a bimetal construction with an aluminum base.

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About this part

Product Details

If you're rebuilding the engine in your 1977-1981 Nissan 810, especially one with the Datsun L28 engine, getting the crankshaft main bearings right is crucial. These bearings sit between the crankshaft and the engine block, supporting the rotating assembly and handling significant loads. This set from King Engine Bearings is specifically sized at +0.25mm, meaning they are 0.25mm undersize, which is important if your crankshaft journals have been machined to this size during a rebuild.

King Engine Bearings uses a bimetal construction with an aluminum base for these main bearings. This design helps manage heat and provides a solid foundation for the bearing surface. Because they are a direct replacement for the original equipment, they are designed to fit right into your L28 engine, simplifying the installation process when you're putting your engine back together. This set is a popular choice for Datsun enthusiasts looking to restore or rebuild their engines with reliable components.