What is the purpose of rod bearings?

Rod bearings sit between the crankshaft and the connecting rod. Their main job is to reduce friction and wear by allowing the crankshaft to spin smoothly within the connecting rod, while also maintaining a precise oil clearance for lubrication and pressure.

What does 'STD Size' mean for these bearings?

STD size means the bearings are manufactured to the original equipment manufacturer's specifications for diameter. They are intended for use with a crankshaft that is also within factory tolerances and has not been machined undersize.

What is the significance of the .001 oil clearance?

The oil clearance is the gap between the bearing and the crankshaft journal. A .001 inch clearance is a tighter tolerance than some stock applications, which can help maintain better oil pressure and reduce the risk of bearing fatigue in performance engines.

ACL 68-89 Nissan 1952cc/2187cc/2389cc 4cyl STD Size High Perf Rod Bearing Set w/.001 Oil Clearance

Specifications

Brand: ACL
Part #: 4B1171HX-STD
UPC: 9315726453209

ACL 68-89 Nissan 1952cc/2187cc/2389cc 4cyl STD Size High Perf Rod Bearing Set w/.001 Oil Clearance

Name: ACL 68-89 Nissan 1952cc/2187cc/2389cc 4cyl STD Size High Perf Rod Bearing Set w/.001 Oil Clearance
Brand: ACL
Price: 102.14 USD
Availability: InStock

$102.14

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ACL High Performance Rod Bearing Set for 68-89 Nissan 4cyl engines. STD size, .001 oil clearance.

Key Features

Fits 1968-1989 Nissan 4-cylinder engines with 1952cc, 2187cc, or 2389cc displacement.
Standard (STD) size bearings are designed for use with a factory-spec crankshaft.
Features a tight .001 inch oil clearance for improved oil pressure and reduced wear.
Well-built construction from ACL for reliable performance in performance applications.
Essential components for engine rebuilds and performance engine builds.

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Product Details

Doing an engine rebuild on your classic Nissan and need to get the rotating assembly dialed in? This ACL High Performance Rod Bearing Set is designed to give you a solid foundation for your build. These bearings are crucial for proper oil flow and reducing friction between the crankshaft and connecting rods, which is key for engine longevity, especially when you're pushing the limits.

ACL has been around for a while, and these bearings are well-built with a focus on performance. They come in standard (STD) size, meaning they're meant to be used with a factory-spec crankshaft. The specified .001 inch oil clearance is a tight tolerance, which helps maintain oil pressure and reduce bearing wear, particularly in higher-revving or performance applications. This set is a popular choice for tuners and mechanics looking for reliable internal engine components for these Nissan engines.

When you're putting an engine back together, getting the bearing clearances right is critical. This set gives you that precise .001 inch clearance right out of the box, saving you time and ensuring consistent performance. Make sure to check your crankshaft journals for straightness and any signs of wear before installing these bearings.