What does '0.25 Oversized' mean for these bearings?

The '0.25 Oversized' designation, often written as 0.25mm undersize, means these bearings are slightly smaller than standard size. This is necessary when the crankshaft journals have been machined down (ground) to a smaller diameter during an engine rebuild to remove wear or damage.

Are these bearings suitable for a daily driver engine rebuild?

Yes, ACL is known for making durable engine bearings. While they are marketed as 'high performance,' their solid construction makes them a reliable choice for a daily driver engine rebuild where longevity and proper oil clearance are important.

What else might I need when installing these rod bearings?

When installing rod bearings, especially during an engine rebuild, you'll need to ensure your crankshaft journals are clean and measured accurately. You'll also need new connecting rod bolts and nuts, assembly lube, and potentially new piston rings and main bearings to complete the engine overhaul.

ACL 68-89 Nissan 1952cc/2187cc/2389cc 4cyl 0.25 Oversized High Performance Rod Bearing Set

Specifications

Brand: ACL
Part #: 4B1171H-.25
UPC: 9315726453186

ACL 68-89 Nissan 1952cc/2187cc/2389cc 4cyl 0.25 Oversized High Performance Rod Bearing Set

Name: ACL 68-89 Nissan 1952cc/2187cc/2389cc 4cyl 0.25 Oversized High Performance Rod Bearing Set
Brand: ACL
Price: 102.14 USD
Availability: InStock

$102.14

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ACL 4B1171H-.25 high performance rod bearing set for Nissan 4-cylinder engines. Features 0.25mm undersize for engine rebuilds.

Key Features

Fits 1968-1989 Nissan vehicles with 1952cc, 2187cc, or 2389cc 4-cylinder engines.
0.25mm undersize sizing is ideal for crankshafts that have been machined during an engine rebuild.
High-performance rod bearing set from ACL, a well-known manufacturer of engine components.
Well-built for reliable performance and durability in rebuilt engines.
Designed to maintain proper oil clearance for engine longevity.

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Will this fit your vehicle?

Product Details

Doing an engine rebuild on your classic Nissan? Whether you're working on a 200SX, a 510, or a 720 pickup, these ACL high-performance rod bearings are a solid choice for getting your engine back in shape. These bearings are specifically sized at 0.25mm undersize, which is crucial when you've had your crankshaft ground down during the rebuild process. ACL has been making engine bearings for a long time, and they're known for making well-built parts that hold up.

These aren't your standard replacement bearings; they're built to handle a bit more. The material and construction are designed to provide a strong, reliable surface for your connecting rod journals, helping to ensure proper oil clearance and long life for your rebuilt engine. When you're putting an engine back together, especially one that's going to see regular use, having good bearings is key to a successful build. ACL's reputation in the performance and racing world means these bearings are made with tight tolerances and good material science.

When you're installing these, make sure you've followed the manufacturer's instructions for oil clearance and assembly. It's always a good idea to have your crankshaft journals measured and cleaned before installing new bearings, especially when using undersized bearings like these. This set includes the necessary rod bearings for your engine rebuild.