Name: ACL Subaru EJ20/EJ22/EJ25 (For Thrust in #5) 0.025 Oversized High Perf Main Bearin - CT-1 Coated
Brand: ACL
Price: 145.64 USD
Availability: InStock

Question 1

What does 'thrust in #5' mean?

Accepted Answer

The #5 main bearing is designed to handle the crankshaft's thrust load, which is the force that pushes the crankshaft forward and backward. This bearing is wider than the others to provide a larger surface area to resist this force. If you're experiencing excessive crankshaft endplay, this bearing may be worn.

Question 2

What does it mean to have 0.025 inch oversized bearings?

Accepted Answer

When an engine is rebuilt, the crankshaft journals may be machined to remove imperfections or damage. This reduces the diameter of the journals, requiring oversized bearings to maintain the correct oil clearance. These 0.025 inch oversized bearings compensate for crankshafts that have been ground down by that amount.

Question 3

What other parts should I replace when replacing main bearings?

Accepted Answer

When replacing main bearings, it's always a good idea to inspect and, if necessary, replace the connecting rod bearings at the same time. Also, inspect the crankshaft for wear or damage and have it machined if necessary. Always use new main bearing bolts and apply the correct torque during installation.

Specifications

ACL Subaru EJ20/EJ22/EJ25 (For Thrust in #5) 0.025 Oversized High Perf Main Bearin - CT-1 Coated

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