What does the +1.0mm sizing mean for these bearings?

The +1.0mm sizing indicates that these bearings are intended for use when the engine's connecting rod journals on the crankshaft have been machined down by 1.0mm. This is a common practice during engine rebuilding to account for wear or to achieve a specific clearance.

What is the advantage of a bimetal bearing construction?

Bimetal bearings, like these with an aluminum silicon base, offer a good combination of strength and the ability to conform to the crankshaft journal. This helps maintain proper oil clearance and film strength, which is essential for reducing friction and wear.

Are these bearings sold individually or as a set?

This product is a connecting rod bearing set, meaning it includes all the necessary bearings for the connecting rods in the specified engine application.

Specifications

Brand: King Engine Bearings
Part #: CR4059SI1.0
UPC: 611500441479

King Engine Bearings General Motors 138Ci 2.3L L40/Ld2 16V (Size +1.0mm) Connecting Rod Bearing Set

Name: King Engine Bearings General Motors 138Ci 2.3L L40/Ld2 16V (Size +1.0mm) Connecting Rod Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-general-motors-138ci-2-3l-l40-ld2-16v--t14-769555
Price: 56.35 USD
Availability: BackOrder

$56.35

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King Engine Bearings connecting rod bearing set for GM 2.3L L40/LD2 engines. Size +1.0mm. Verified fitment.

Key Features

Fits General Motors 138ci 2.3L L40 and LD2 16V engines.
This is a +1.0mm undersize connecting rod bearing set.
Constructed with a bimetal design on an aluminum silicon base.
Designed for reliable performance in a variety of GM vehicles.

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About this part

Product Details

Built with a bimetal construction on an aluminum silicon base, these King Engine Bearings connecting rod bearings are made to handle the demands of your General Motors 138ci 2.3L L40 and LD2 engines. This set is specifically sized at +1.0mm, which is crucial when rebuilding or refreshing an engine that has had its crankshaft machined to a larger size. King is a popular name in engine bearings, known for producing well-built components that fit right and perform reliably.

These bearings are designed to provide a solid foundation for your engine's rotating assembly. The bimetal material offers a good balance of strength and conformability, helping to maintain oil film integrity under various operating conditions. Whether you're doing a full engine overhaul or addressing wear in the bottom end, these bearings are a solid option for keeping your engine running smoothly.

This set is designed to fit a range of General Motors vehicles from the late 80s through the mid-90s, including models like the Buick Skylark, Chevrolet Cavalier, and Pontiac Grand Am. Always refer to your vehicle's specific service manual for detailed installation procedures and torque specifications.