ACL Race Series Standard-Size Main Bearing Set (AE86 Corolla / AW11 MR2 / AE92 Corolla)

ACL Race Series Standard-Size Main Bearing Set

For 1983–1987 Toyota Corolla AE86, 1984–1989 Toyota MR2 AW11, and 1987–1991 Toyota Corolla AE92 coupe equipped with standard-size crankshaft main journals.

Overview

The ACL Race Series Standard-Size Main Bearing Set is a performance engine-bearing set for Toyota 4A-C, 4A-F, 4A-FE, 4A-GE 16V and 4A-GZE engines in 1983–1987 Corolla AE86, 1984–1989 MR2 AW11 and 1987–1991 JDM Corolla AE92 coupes and 1988–1991 U.S.-Market Corolla AE92 coupe applications using standard-diameter crankshaft main journals. The set supports the crankshaft across all five main-journal positions and is intended for performance rebuilds where consistent clearances, bearing retention, and durability at elevated engine speeds are priorities. JDM AE92 coverage is for 4A-GE 16V / 4A-GZE; the 4A-F / 4A-FE applications are U.S.-Market.

This set replaces the bearing shells at all five main-journal positions. It is intended for a performance rebuild using a crankshaft that retains standard-size main journals, not one that has been ground to an undersize repair dimension.

This bearing set is for standard-size crankshaft journals only. The actual journal diameter and required assembled oil clearance determine bearing suitability.

Key Features

• ACL Race Series performance main bearing set
• For Toyota 4A-C, 4A-F, 4A-FE, 4A-GE 16V and 4A-GZE engines using standard-size crankshaft main journals
• Complete set for all five crankshaft main-journal positions
• Standard-size configuration for standard-diameter crankshaft journals
• Tri-metal copper-lead bearing construction with nickel barrier layer
• High-tensile steel backing for bearing support and retention
• Precision-machined wall thickness for consistent assembled clearances
• Extended main-bearing grooves support oil delivery to the connecting-rod bearings
• Increased eccentricity helps accommodate housing distortion at elevated engine speeds
• Enlarged internal-diameter chamfers accommodate performance crankshaft fillet radii

Race Series Bearing Construction

ACL Race Series bearings use a multi-layer construction built for high-load engine applications. The bearing structure uses SAE1010 high-tensile steel backing, a copper-lead-tin lining, a nickel separation layer, and a lead-tin-copper overlay.

The Race Series design does not use a cosmetic silver tin flash. New bearings can show a dark tarnished appearance that may vary between black, brown, and blue tones; this is normal for the Race Series overlay and does not indicate a used or damaged bearing.

Vehicle Fitment

Toyota Corolla — AE86

• 1983–1987: Trueno (JDM) / 4A-GE 16V
• 1983–1987: Levin (JDM) / 4A-GE 16V
• 1985–1987: GT-S (U.S.-Market) / 4A-GE 16V
• 1984–1987: SR5 (U.S.-Market) / 4A-C

Toyota MR2 — AW11 / MK1

• 1984–1989: JDM / naturally aspirated 4A-GE 16V
• 1985–1989: U.S.-Market / naturally aspirated 4A-GE 16V
• 1986–1989: JDM Supercharged / 4A-GZE
• 1988–1989: U.S.-Market Supercharged / 4A-GZE

Toyota Corolla / Sprinter — AE92 — Coupe

• 1987–1991: Corolla Levin / Sprinter Trueno coupe (JDM) / 4A-GE 16V or 4A-GZE
• 1988–1991: GT-S coupe (U.S.-Market) / 4A-GE 16V
• 1988–1989: SR5 coupe (U.S.-Market, Japan-produced) / 4A-F
• 1990–1991: SR5 coupe (U.S.-Market) / 4A-FE

Fitment Notes

• Standard-size crankshaft journal application only
• Verify the installed engine and measured main-bearing interface before ordering
• A crankshaft ground undersize requires the corresponding repair-size bearing set. Actual journal dimensions and assembled oil clearance determine the required bearing choice.
• This is a main bearing set; connecting-rod bearings and thrust washers are sold separately. The ACL Standard-Thickness Thrust Washer Set is a separate complementary set; thrust thickness must suit the measured crankshaft thrust faces and required end float.

Product Specifications

Brand: ACL
Series: Race Series
Product Type: Engine Main Bearing Set
Bearing Size: Standard (STD)
Engine Family: Toyota 4A-C / 4A-F / 4A-FE / 4A-GE 16V / 4A-GZE
Engine Displacement: 1.6L / 1587cc
Bearing Construction: Tri-Metal
Lining: Copper-Lead-Tin
Barrier Layer: Nickel
Overlay: Lead-Tin-Copper
Steel Backing: SAE1010 High-Tensile Steel
Main Journal Positions: 1–5
Tunnel Diameter: 52.020–52.050 mm
Standard Shaft Diameter: 47.985–48.000 mm
Maximum Wall Thickness: 2.001 mm
Maximum Bearing Length: 19.90 mm
Grade: Performance

What's Included

• (1) Complete ACL Race Series standard-size main bearing set for all five crankshaft main journals