What does the +1.0mm sizing mean for this bearing set?

The +1.0mm sizing indicates that these bearings are intended for use when the crankshaft journals have been machined down by 1.0mm. This is a common practice during engine rebuilds to clean up wear or damage on the crankshaft surface.

What is the advantage of a bimetal aluminum base construction?

A bimetal construction typically uses a steel backing for strength and a bearing material layer, often aluminum-based, on the surface that contacts the crankshaft. This design offers good load-carrying capacity and conformability to the crankshaft.

Do I need to purchase anything else to install these main bearings?

When installing main bearings, it's standard practice to also replace the main bearing cap bolts with new ones, as they are often torque-to-yield. You will also need engine oil for assembly and proper torque specifications from a service manual.

Specifications

Brand: King Engine Bearings
Part #: MB524AM1.0
UPC: 611500163418

King Engine Bearings Mitsubishi 4G63 (Size +1.0mm) Main Bearing Set

Name: King Engine Bearings Mitsubishi 4G63 (Size +1.0mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-mitsubishi-4g63-size-1-0mm-main-bearin-t14-770593
Price: 65.86 USD
Availability: BackOrder

$65.86

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King Engine Bearings Mitsubishi 4G63 (Size +1.0mm) Main Bearing Set. Bimetal construction for reliable engine performance.

Key Features

Fits a wide range of vehicles with the Mitsubishi 4G63 engine.
Main bearing set is sized +1.0mm for use with machined crankshaft journals.
Constructed with a bimetal aluminum base for reliable engine support.
Helps maintain proper oil clearance for the crankshaft.
Reduces friction between the crankshaft and the engine block.

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About this part

Product Details

Built with a bimetal aluminum base, this main bearing set from King Engine Bearings is designed for the Mitsubishi 4G63 engine. These bearings are crucial for supporting the crankshaft and ensuring it spins smoothly within the engine block. This particular set is sized at +1.0mm, meaning it's intended for use when the crankshaft journals have been machined down by 1.0mm during an engine rebuild or repair. Proper main bearings are essential for maintaining oil clearance, reducing friction, and ultimately contributing to the longevity and performance of your engine.

This set fits a wide range of vehicles that utilize the 4G63 engine, including popular models like the Mitsubishi Eclipse, Dodge Colt, and Eagle Talon. The bimetal construction offers a good balance of strength and conformability, allowing the bearing to adapt to the crankshaft surface while providing solid support. When rebuilding or repairing your 4G63, using bearings that are precisely sized for your machined crankshaft is key to achieving correct oil pressure and preventing premature wear.