What does the +0.50mm sizing mean for these bearings?

The +0.50mm sizing indicates that these bearings are larger than standard. They are designed to be used when the crankshaft journals have been machined down by 0.50mm to correct wear or out-of-round conditions. This ensures a proper fit and oil clearance on a reconditioned crankshaft.

What is the advantage of a bimetal bearing with an aluminum silicon base?

Bimetal bearings offer a good balance of strength and conformability. The aluminum silicon base provides excellent wear resistance and can conform to minor imperfections in the crankshaft, helping to maintain a consistent oil film and reduce friction.

Do these bearings come with installation instructions?

While this set includes the main bearings, it's recommended to refer to the manufacturer's installation guidelines or a service manual for proper installation procedures. This includes ensuring the crankshaft journals are clean and within specified tolerances before fitting the new bearings.

Specifications

Brand: King Engine Bearings
Part #: MB4080SI1.5
UPC: 611500432927

King Engine Bearings GMC 2.8L/3.4L V6 173Ci/207Ci (Size +0.50mm) Main Bearing Set

Name: King Engine Bearings GMC 2.8L/3.4L V6 173Ci/207Ci (Size +0.50mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-gmc-2-8l-3-4l-v6-173ci-207ci-size-0-50-t14-770355
Price: 48.99 USD
Availability: BackOrder

$48.99

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King Engine Bearings main bearing set MB4080SI1.5. Features bimetal construction and is 0.50mm oversize.

Key Features

Fits a wide range of Buick, Cadillac, Chevrolet, GMC, and Isuzu vehicles.
Main bearing set designed for GMC 2.8L, 3.4L V6 173CI, and 207CI engines.
Features a bimetal construction with an aluminum silicon base.
This set is 0.50mm oversize, intended for use with machined crankshaft journals.

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About this part

Product Details

Starting with a bimetal construction using an aluminum silicon base, this King Engine Bearings main bearing set is built for durability. This set is specifically sized at +0.50mm, meaning it's intended for crankshafts that have been machined down to accommodate this larger size during an engine rebuild. These bearings are designed for a range of GMC 2.8L and 3.4L V6 engines, commonly found in vehicles like the Chevrolet Camaro, S10, and GMC Sonoma, among many others.

When you're rebuilding an engine, especially one that's seen a lot of miles, getting the right bearings is crucial for oil pressure and longevity. King Engine Bearings is a well-known name in the performance and racing world, and this set reflects their focus on materials that can handle the demands of an engine. The aluminum silicon base offers good wear resistance and conformability, helping to maintain proper oil film thickness even under load.

This main bearing set is a solid option when you need to replace worn bearings or are working on an engine that requires a +0.50mm size. Always ensure your crankshaft journals are properly machined and cleaned before installing new bearings to get the best performance and life out of them.