Name: ACL BMW S85B50 .25mm Oversized Performance Rod Bearing Set
Brand: ACL
Price: 271.40 USD
Availability: InStock

Question 1

What does it mean for a bearing to be "oversized?"

Accepted Answer

When a crankshaft is machined, it's often ground down to a smaller diameter. Oversized bearings compensate for this material removal, maintaining the correct oil clearance. These 0.25mm oversized bearings require a crankshaft that has been machined 0.25mm smaller than the standard size.

Question 2

What other parts should I replace when replacing my rod bearings?

Accepted Answer

Whenever you're doing bearings, it's best practice to replace the rod bolts at the same time. Check the condition of your crankshaft — if it has any damage, it will need to be machined or replaced. Always refer to the factory service manual for torque specifications and any special installation procedures.

Question 3

How do I care for and maintain these rod bearings?

Accepted Answer

Proper engine maintenance is key to bearing life. Use a quality oil and filter, and change them at the recommended intervals. Avoid excessive idling or short trips, which can lead to fuel dilution of the oil and premature bearing wear.

ACL BMW S85B50 .25mm Oversized Performance Rod Bearing Set

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