Name: ACL BMW E30 M3 S14B20/23/25 I4 Connecting Rod Bearing Set (Oversize +0.25)
Brand: ACL
Price: 102.36 USD
Availability: InStock

Question 1

What does +.25 mean?

Accepted Answer

The +.25 indicates that this bearing set is 0.25mm (0.010 inch) larger than the standard size. This is often required when a crankshaft has been machined during an engine rebuild. Always measure to confirm the correct bearing size.

Question 2

How do I know if I need oversized bearings?

Accepted Answer

Oversized bearings are typically needed if the crankshaft has been previously machined or is worn. A machine shop can measure the crankshaft journals and determine the appropriate bearing size for your application. Using the wrong size bearing can cause engine damage.

Question 3

What else should I replace when replacing my rod bearings?

Accepted Answer

When replacing rod bearings, it's best practice to inspect the crankshaft for wear and have it machined if necessary. You should also replace the connecting rod bolts, as they are often torque-to-yield and cannot be reused. Always refer to the manufacturer's torque specifications when installing new bearings and bolts.

ACL BMW E30 M3 S14B20/23/25 I4 Connecting Rod Bearing Set (Oversize +0.25)

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