What is the difference between standard size and undersize bearings?

Standard size bearings are used when the crankshaft journals are still within their original factory specifications. Undersize bearings, like those that are 0.010" or 0.020" smaller, are used when the crankshaft journals have been machined down to correct for wear or damage.

Do I need to machine my crankshaft to use these bearings?

This is a standard size bearing set, meaning it is intended for use with a crankshaft that has not been machined or ground undersize. If your crankshaft has been repaired or resurfaced, you may need an undersize bearing set.

What is the main function of main bearings in an engine?

Main bearings support the crankshaft within the engine block. They create a low-friction surface that allows the crankshaft to rotate smoothly while handling the immense forces generated during combustion.

ACL 68-74 Nissan 4 / 1595-1770CC L16E/L18E Standard Size High Performance Main Bearing Set

Specifications

Brand: ACL
Part #: 5M1172A-STD
UPC: 9315726038734

ACL 68-74 Nissan 4 / 1595-1770CC L16E/L18E Standard Size High Performance Main Bearing Set

Name: ACL 68-74 Nissan 4 / 1595-1770CC L16E/L18E Standard Size High Performance Main Bearing Set
Brand: ACL
Price: 24.60 USD
Availability: InStock

$24.60

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Fits 1972-1973 Nissan 620 Pickup. ACL standard size main bearing set for L16E/L18E engines. Ensures proper crankshaft support.

Key Features

Fits 1972-1973 Nissan 620 Pickup.
Standard size main bearing set for L16E and L18E engines.
ACL is a well-known manufacturer of engine bearings.
Designed to provide proper crankshaft support during engine operation.
Essential component for engine rebuilds and overhauls.

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Fits this vehicle

Nissan 620 Pickup 1972-1973

Product Details

You get a full set of standard size main bearings in this kit, which means one box handles the critical crankshaft support for your engine rebuild. These ACL main bearings are made for the L16E and L18E engines found in the 1972 and 1973 Nissan 620 Pickup. Proper main bearing function is key to a healthy engine, as they cushion the crankshaft and allow it to spin freely within the engine block.

ACL has been making engine bearings for a long time, and these are well-built for the job. They are designed to meet the demands of the L-series engines, providing a solid layer of protection between the rotating crankshaft and the engine block. Installing new main bearings is a crucial step when rebuilding or overhauling your engine, ensuring longevity and smooth operation. This set is the standard size, meaning it's intended for crankshafts that are still within their original factory specifications without any machining or grinding.