What does the +0.75mm sizing mean for these bearings?

The +0.75mm sizing means these bearings are intended for use when the engine's main crankshaft journals have been machined down by 0.75mm. This is typically done during an engine rebuild to clean up wear or damage on the journals.

Why is proper oil clearance important with main bearings?

Proper oil clearance is critical for engine health. It ensures the crankshaft can rotate smoothly while maintaining a thin film of oil for lubrication and cooling, preventing metal-on-metal contact.

What is the primary function of main bearings?

Main bearings support the crankshaft within the engine block. They allow the crankshaft to rotate while maintaining the correct position and providing a surface for lubrication.

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Specifications

Brand: King Engine Bearings
Part #: MB5656SI0.75
UPC: 611500535604

King Engine Bearings Toyota 1Zr-Fe (Size +0.75mm) Main Bearing Set

Name: King Engine Bearings Toyota 1Zr-Fe (Size +0.75mm) Main Bearing Set
Brand: King Engine Bearings
SKU: king-engine-bearings-king-engine-bearings-toyota-1zr-fe-size-0-75mm-main-bearing-t14-770888
Price: 60.94 USD
Availability: BackOrder

$60.94

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King Engine Bearings Toyota 1Zr-Fe (Size +0.75mm) Main Bearing Set. Essential for engine rebuilds needing precise tolerances.

Key Features

Fits Toyota 1Zr-Fe engines.
Main bearing set.
Size is +0.75mm over stock.
Part number MB5656SI0.75.

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About this part

Product Details

King Engine Bearings is well-known for making solid engine bearings. This main bearing set, part number MB5656SI0.75, is made for Toyota 1Zr-Fe engines and is sized +0.75mm over stock. If you're rebuilding the bottom end of your engine and need to bring the crankshaft journals back into spec after machining, this set is what you'll need.

These bearings are designed to handle the demands of the engine while providing a crucial layer between the rotating crankshaft and the engine block. The +0.75mm sizing indicates these are intended for use after the main journals have been machined down by 0.75mm to clean up any wear or damage. Using the correct bearing size is critical for maintaining proper oil clearance, which ensures the crankshaft spins freely and receives adequate lubrication.