What does '1.25 undersize' mean for these bearings?

This means the bearings are 0.00125 inches smaller in diameter than standard size. They are designed to be used when the engine's crankshaft has been machined down by 0.00125 inches to correct wear or damage.

What is the advantage of a bimetal aluminum base construction?

Bimetal bearings, especially those with an aluminum base, offer good heat transfer properties and conformability. This helps them handle the loads and temperatures within the engine while maintaining a smooth running surface for the crankshaft.

Does this main bearing set come with all the necessary hardware for installation?

This product is for the main bearing set only. It does not include installation hardware, oil seals, or other related engine components. You will need to source those separately if required for your engine rebuild.

Specifications

Brand: King Engine Bearings
Part #: MB534AM1.25
UPC: 611500165429

King Engine Bearings Datsun Mitsubishi (Size 1.25) Main Bearing Set

Name: King Engine Bearings Datsun Mitsubishi (Size 1.25) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-datsun-mitsubishi-size-1-25-main-beari-t14-4330065
Price: 90.75 USD
Availability: BackOrder

$90.75

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Fits 1968-1973 Nissan 510. King Engine Bearings MB534AM1.25 Main Bearing Set. Bimetal aluminum base construction.

Key Features

Fits 1968-1973 Nissan 510.
Also fits 1969-1972 Nissan 521 Pickup, 1973 Nissan 610, 1972-1974 Nissan 620 Pickup, and 1974 Nissan 710.
Designed for Datsun L18 engines.
Features a bimetal construction with an aluminum base.
This is a 1.25 undersize bearing set, intended for use with a machined crankshaft.

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About this part

Product Details

King Engine Bearings is known for making well-built engine components, and this Main Bearing Set is no exception. If you're rebuilding the engine in your Datsun or Nissan, these bearings are designed to handle the critical job of supporting your crankshaft. They feature a bimetal construction with an aluminum base, which helps with heat dissipation and smooth operation.

This set is specifically sized at 1.25 undersize, meaning it's intended for crankshafts that have been machined down to compensate for wear. This is a common practice during engine overhauls to restore proper clearances and ensure the engine runs true. The bimetal design is a popular choice for its durability and ability to handle the pressures within the crankcase.

This set is a solid option for your Datsun L18 engine, fitting a range of classic Nissan models. Make sure to check the specific fitment for your vehicle to ensure these are the correct bearings for your rebuild project.