What does the '+0.25mm' size mean for these bearings?

The '+0.25mm' indicates that these bearings are 0.25mm larger in diameter than standard size. They are intended for use when the engine's crankshaft journals have been machined down by 0.25mm to remove wear or damage.

What is a bimetal bearing construction?

A bimetal bearing uses two different layers of metal. In this case, it has an aluminum base, which provides good conformability and embeddability, combined with a bearing overlay for strength and wear resistance.

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

Yes, if your crankshaft has been machined down by 0.25mm to address wear or imperfections, you will need to use these +0.25mm undersize bearings to achieve the correct oil clearance and fit.

Specifications

Brand: King Engine Bearings
Part #: MB5180AM0.25
UPC: 611500223112

King Engine Bearings Renault R9/R11 (Size +0.25mm) Main Bearing Set

Name: King Engine Bearings Renault R9/R11 (Size +0.25mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-renault-r9-r11-size-0-25mm-main-bearin-t14-770519
Price: 57.08 USD
Availability: BackOrder

$57.08

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Fits 1984-1987 Renault Alliance. King Engine Bearings main bearing set with a bimetal aluminum base construction for improved durability.

Key Features

Fits 1984-1987 Renault Alliance and 1985-1986 Renault Encore.
Main bearing set designed for the specific engine of these Renault models.
Features a bimetal construction with an aluminum base for durability.
This set is sized +0.25mm, intended for use with a crankshaft machined to that undersize.

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About this part

Product Details

If you're rebuilding the engine in your 1984-1987 Renault Alliance or Encore, a fresh set of main bearings is crucial for proper crankshaft support. These main bearings from King Engine Bearings are designed specifically for your vehicle's engine, ensuring the crankshaft spins smoothly and stays properly aligned within the block. This is essential for maintaining oil pressure and preventing premature wear on other engine components.

These bearings are constructed with a bimetal design, featuring an aluminum base. This construction offers a good balance of strength and wear resistance, suitable for the demands of a rebuilt engine. The set is sized at +0.25mm, meaning it's intended for use when the crankshaft journals have been machined down by 0.25mm to clean up any imperfections or wear. Using the correct undersize bearing ensures a proper fit and optimal oil clearance.