Name: ACL Nissan ZD30, QD32, Inline 4 Diesel Std High Performance W/ Extra Oil Clearance Main Bearing Set
Brand: ACL
SKU: acl-acl-nissan-zd30-qd32-inline-4-diesel-std-high-performance-w-extra-oil-cleara-t14-96028
Price: 102.69 USD
Availability: BackOrder

Question 1

What does 'extra oil clearance' mean?

Accepted Answer

Extra oil clearance means these bearings allow a slightly thicker film of oil between the bearing surface and the crankshaft journal. This can be beneficial in high-performance engines or engines that experience high loads, as it provides additional lubrication and reduces the risk of metal-to-metal contact. However, it's crucial to ensure that the oil pressure remains within the recommended range.

Question 2

How do I know if I need standard-size or undersize bearings?

Accepted Answer

Standard-size bearings are for crankshafts that have not been machined or ground down. If your crankshaft journals have been resurfaced during a rebuild, you'll likely need undersize bearings to compensate for the material removed. A machine shop can measure your crankshaft and determine the correct bearing size.

Question 3

What other parts should I replace when replacing the main bearings?

Accepted Answer

When replacing the main bearings, it's best practice to also replace the connecting rod bearings at the same time. Additionally, inspect the crankshaft for any signs of wear or damage, and consider having it professionally polished or machined if necessary. Always use new main cap bolts and connecting rod bolts, and torque them to the manufacturer's specifications.

Specifications

ACL Nissan ZD30, QD32, Inline 4 Diesel Std High Performance W/ Extra Oil Clearance Main Bearing Set

Key Features

Specifications

Frequently Asked Questions

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