ACL Race main bearings for Toyota 1JZ-GE, 1JZ-GTE, 2JZ-GE and 2JZ-GTE engines with standard crankshaft. ACL Race Series is developed for high-load engines and is often used for tuning, motorsport and performance engine builds where higher demands are placed on the bearings than in a standard engine rebuild.
The bearings are manufactured from ACL's F780 trimetal material with steel backing, copper/lead alloy and high-strength overlay. This combination provides high load capacity, improved heat transfer and good resistance to stress at high RPM and high cylinder pressure.
ACL Race Series is known for optimised oil distribution, improved oil grooves and precise tolerances. These properties help maintain a stable oil film under hard load and make the bearings suitable for performance engine builds, tuning and motorsport where correct oil clearance, crankshaft measurements and bearing fitment are checked during installation.
Improvements in material, dynamic thickness, heat transfer, oil grooves and oil distribution are some of the factors that make ACL one of the most widely used manufacturers of performance engine bearings.
Specifications:
Type: ACL Race main bearings
Material: Trimetal copper/lead alloy (F780) with steel backing and overlay
Crankshaft: Standard size (STD)
Oil clearance: Standard oil clearance
Bearing type: Upper and lower main bearings
Contents: 10 bearing halves (5 complete main bearings)
ACL part number: 7M8103H-STD
Maximum total length: 20.0 millimetres
Maximum shaft size: 62.001 millimetres
Maximum housing bore size: 66.035 millimetres
Maximum wall at crown: 2.004 millimetres
Minimum shaft size: 61.984 millimetres
Minimum housing bore size: 66.020 millimetres
Fits engine codes:
1JZ-GE / 1JZ-GTE / 2JZ-GE / 2JZ-GTE
