Name: ACL Nissan QR25 0.75mm Oversized Main Bearing Set
Brand: ACL
SKU: acl-acl-nissan-qr25-0-75mm-oversized-main-bearing-set-t14-280134
Price: 32.38 USD
Availability: BackOrder

Question 1

What does '0.75mm oversized' mean?

Accepted Answer

When an engine block is align-bored or align-honed, material is removed from the main bearing journals. Oversized bearings compensate for this material removal, ensuring proper crankshaft clearance and oil pressure. This 0.75mm oversized bearing set adds 0.75mm to the outside diameter of the bearing.

Question 2

What happens if I use standard-size bearings after align-honing?

Accepted Answer

If you install standard-size bearings after align-honing, the crankshaft clearance will be excessive. This can lead to low oil pressure, bearing knock, and potential engine damage. Always use the correct oversized bearings for your specific machining dimensions.

Question 3

Do I need to use oversized bearings on the connecting rods as well?

Accepted Answer

That depends on whether the connecting rods have also been machined. If the connecting rod journals have been resized, you'll need oversized rod bearings as well. Consult your machinist to determine the correct bearing sizes for both the main and rod bearings.

Specifications

ACL Nissan QR25 0.75mm Oversized Main Bearing Set

Key Features

Specifications

Frequently Asked Questions

You Might Also Like

ACL +005 O/S Subaru 4 EJ20/EJ22/EJ25 Race Series Engine Crankshaft Main Bearing Set

ACL 68-84 Toyota 6 2253-2563-2759cc Standard Size Rod Bearing Set

ACL 81-98 Mazda 4 1498-1597-1840cc B5/B6/BP .25mm Oversized Main Bearing Set

ACL 88-95 Honda 1590/1958/2056CC D17 Standard Size Main Bearing Set (5M1957-STD)

ACL +005 O/S Subaru 4 EJ20/EJ22/EJ25 Race Series Engine Crankshaft Main Bearing Set

ACL 68-84 Toyota 6 2253-2563-2759cc Standard Size Rod Bearing Set

ACL 81-98 Mazda 4 1498-1597-1840cc B5/B6/BP .25mm Oversized Main Bearing Set

ACL 88-95 Honda 1590/1958/2056CC D17 Standard Size Main Bearing Set (5M1957-STD)