Name: ACL Toyota 4 2977-3431cc 1986-90 Engine Crankshaft Main Bearing Set
Brand: ACL
SKU: acl-acl-toyota-4-2977-3431cc-1986-90-engine-crankshaft-main-bearing-set-t14-632966
Price: 16.10 USD
Availability: BackOrder

Question 1

What does '0.75mm undersize' mean?

Accepted Answer

An undersize bearing is for crankshafts that have been machined smaller than the original factory size. If your crankshaft has been ground 0.75mm smaller, this bearing set will compensate for the material that was removed during the machining process, maintaining the correct oil clearance.

Question 2

Do I need any special tools to install these bearings?

Accepted Answer

You'll need standard hand tools to disassemble the engine and install the new bearings. Refer to the manufacturer's installation instructions for torque specifications and any specific procedures.

Question 3

How often should I replace my main bearings?

Accepted Answer

Main bearings should be replaced during an engine rebuild or if you notice signs of wear or damage, such as excessive engine noise or low oil pressure. Regular oil changes can extend bearing life.

Specifications

ACL Toyota 4 2977-3431cc 1986-90 Engine Crankshaft Main Bearing Set

Key Features

Specifications

Frequently Asked Questions

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