What is the advantage of extra oil clearance in these bearings?

Extra oil clearance allows for a larger volume of oil to flow through the bearing. This helps to reduce operating temperatures and ensure proper lubrication, which is especially important in high-RPM or performance engine applications.

Are these bearings suitable for a daily driver?

While these are Race Series bearings designed for performance, they can be used in a daily driver if the engine is being rebuilt or refreshed. The tri-metal construction and extra oil clearance offer robust lubrication and durability.

Do I need to measure my crankshaft before installing these bearings?

Yes, it is highly recommended to measure your crankshaft journals to ensure they are within factory specifications for a standard size bearing. If the journals are worn or out of round, they may require machining to a different size, and these standard size bearings would not be appropriate.

Specifications

Brand: ACL
Part #: 4B8351HX-STD
UPC: 9315726152324

ACL Mazda 4 B6/BP/BP-T Race Series Stndrd Size High Performance w/Extra Oil Clerance Rod Bearing Set

Name: ACL Mazda 4 B6/BP/BP-T Race Series Stndrd Size High Performance w/Extra Oil Clerance Rod Bearing Set
Brand: ACL
SKU: acl-acl-mazda-4-b6-bp-bp-t-race-series-stndrd-size-high-performance-w-extra-oil--t14-4354958
Price: 54.67 USD
Availability: InStock

$54.67

In Stock

Key Features

Fits Kia Rio (2001-2005), Kia Sephia (1994-1997), Mazda 323 (1986-1994), Mazda MX-3 (1992-1995), Mazda Miata (1990-1997, 1999-2005), Mazda Protege (1990-2001), and Mercury Capri (1991-1994).
Standard size bearings designed for crankshafts within factory specifications.
Tri-metal construction offers a strong and durable bearing surface.
Extra oil clearance allows for increased oil flow, beneficial for high-performance engines.
Designed for high-performance and racing applications.

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About this part

Product Details

200,000 psi tensile strength puts these ACL Race Series rod bearings well above stock hardware. If you're building a performance engine or refreshing a high-mileage powerplant for the track or just want a little extra peace of mind, these bearings are a solid choice. They're built with a tri-metal construction that offers excellent strength and durability, even under demanding conditions. The extra oil clearance is a key feature for performance applications, allowing for increased oil flow to help keep your engine cool and well-lubricated, especially at higher RPMs.

ACL has been making engine bearings for a long time, and this Race Series set is a popular option for good reason. The standard size means they're designed to fit crankshafts that are still within factory specifications. They are well-built to handle the extra stress of performance driving, offering a reliable upgrade over stock components. When you're putting together an engine that needs to perform, using quality internal components like these bearings is essential for longevity and power.

This set includes bearings for all the connecting rods. Make sure to check your crankshaft for any wear or damage before installation, and always follow the manufacturer's recommended torque and oil clearance specifications during assembly.