What does the 0.25mm undersize mean for these bearings?

The 0.25mm undersize indicates that these bearings are slightly smaller than standard size. This is necessary when the crankshaft journals have been machined down (ground) during an engine rebuild to ensure the correct oil clearance is achieved.

What is the tri-metal material used in these bearings?

King Engine Bearings utilize a tri-metal material, which is a composite of three different layers. This construction is known for its excellent load-carrying capacity, wear resistance, and ability to maintain performance under high temperatures and pressures.

Are these bearings a direct replacement for stock size?

No, these bearings are specifically sized at 0.25mm undersize. They are intended for use in engines where the crankshaft has been machined undersize as part of a rebuild process. Standard size bearings would be required if the crankshaft journals are still at factory specifications.

Specifications

Brand: King Engine Bearings
Part #: CR6901MC0.25
UPC: 611500620829

King Engine Bearings Ford Ecoboost 2.7L V6 (Size 0.25) Connecting Rod Bearing Set

Name: King Engine Bearings Ford Ecoboost 2.7L V6 (Size 0.25) Connecting Rod Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-ford-ecoboost-2-7l-v6-size-0-25-connec-t14-432326
Price: 164.63 USD
Availability: BackOrder

$164.63

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King Engine Bearings Ford Ecoboost 2.7L V6 (Size 0.25) Connecting Rod Bearing Set. These bearings are 0.25mm undersize for a precise fit.

Key Features

This set includes connecting rod bearings sized 0.25mm undersize.
Features King's unique tri-metal material for improved strength and durability.
Constructed with a steel backing for added support and shock absorption.
Designed to provide proper oil clearance for rebuilt crankshaft journals.
Suitable for Ford Ecoboost 2.7L V6 engines.

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About this part

Product Details

These King Engine Bearings connecting rod bearings are built with a unique tri-metal material that offers improved strength and durability. They are specifically sized at 0.25mm undersize, which is crucial for engines that have had their crankshaft journals machined during a rebuild. This precise sizing ensures a proper oil clearance, which is vital for the longevity of your Ford Ecoboost 2.7L V6 engine.

King uses a specialized overlay material that is bonded to a steel-backed bearing. This construction method helps to absorb shock loads and reduce friction, allowing the bearings to perform reliably under demanding conditions. The tri-metal design is well-known for its ability to handle higher loads and temperatures compared to standard bearings, making them a solid option for rebuilding your engine.

When rebuilding your Ford Ecoboost 2.7L V6, using correctly sized and well-built bearings like these from King Engine Bearings is essential for ensuring proper oil pressure and smooth operation. Always refer to your vehicle's service manual for specific installation procedures and torque specifications.