What does '0.025mm undersize' mean for these bearings?

This means the bearings are slightly smaller than the standard size. They are intended for use when the crankshaft journals have been machined down by 0.025mm during an engine rebuild. This ensures the correct oil clearance is maintained.

Are these bearings suitable for a stock engine rebuild?

Yes, these ACL high-performance bearings can be used in a stock engine rebuild. They offer improved durability over OEM bearings and are manufactured to precise tolerances for proper function.

What else might I need when installing these rod bearings?

During an engine rebuild, you'll typically need engine assembly lube to coat the bearings before installation. It's also recommended to use Plastigage to verify the oil clearance is within the manufacturer's specifications.

2000-2009 Honda S2000 Rod Bearings | ACL 4B1912H-.025

Name: ACL Honda F20C/F22C / 97-01 H22A4 0.025mm Oversized High Performance Rod Bearing Set
Brand: ACL
SKU: acl-acl-honda-f20c-f22c-97-01-h22a4-0-025mm-oversized-high-performance-rod-beari-t14-12948
Price: 54.20 USD
Availability: InStock

ACL Honda F20C/F22C / 97-01 H22A4 0.025mm Oversized High Performance Rod Bearing Set

$54.20

In Stock

Fits 2000-2009 Honda S2000. ACL high performance rod bearing set, 0.025mm undersize, for engine rebuilds.

Key Features

Fits 2000-2009 Honda S2000 and 1997-2001 Honda Prelude.
ACL high performance rod bearing set.
Bearings are 0.025mm undersize for use with machined crankshaft journals.
Designed for improved engine durability under stress.
Manufactured to precise tolerances for proper oil clearance.

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Fits these vehicles

Honda Prelude 1997-2001
Honda S2000 2000-2009

Product Details

Doing an engine rebuild on your Honda S2000, or maybe a Prelude with the H22A4 engine? These ACL high-performance rod bearings are a solid choice for getting your engine back in shape. They're designed to handle more stress than stock bearings, making them a popular pick when you're looking to improve engine durability, especially if you're planning on pushing the engine a bit harder or just want the peace of mind that comes with well-built internal components.

This set is specifically sized at 0.025mm undersize, which is important if you've had your crankshaft journals machined down during the rebuild process. ACL has been around for a while and is known for making reliable engine bearings. These are made to precise tolerances to ensure proper oil clearance, which is critical for lubricating and cooling the connecting rod and crankshaft. Getting the oil clearance right helps prevent premature wear and ensures your engine runs smoothly.

When you're putting an engine back together, using new bearings is a must. Make sure to follow the manufacturer's installation instructions carefully, especially regarding cleaning the crankshaft journals and connecting rod bores, and checking the oil clearance with Plastigage before final assembly. This ensures everything is within spec for optimal performance and longevity.