ACL Race main bearings for Toyota 1JZ-GE, 1JZ-GTE, 2JZ-GE and 2JZ-GTE engines with standard crankshaft and extra bearing clearance. The HX version has greater oil clearance than the standard H-STD version and is typically used for tuning, motorsport and performance engine builds where slightly increased clearance is desired under high load.
ACL Race Series is developed for high-load engines where higher demands are placed on the bearings than in standard engine rebuilds. The bearings are manufactured from ACL's F780 trimetal material, providing high load capacity, improved heat transfer and strong resistance to stress at high engine speeds and high cylinder pressure.
The HX version is suitable for engine builds where the engine builder requires additional oil clearance, for example at higher operating temperatures, increased load or specific bearing fitment requirements. The bearing design and oil distribution help maintain a stable oil film under heavy load.
Correct bearing fitment and oil clearance must always be checked during assembly.
Specifications:
Type: ACL Race main bearings HX
Material: Trimetal copper/lead alloy (F780) with steel backing and overlay
Crankshaft: Standard size (STD)
Oil clearance: Increased oil clearance of 0.068–0.084 millimetres compared with H-STD
Bearing type: Upper and lower main bearings
Contents: 10 bearing halves (5 complete main bearings)
ACL part number: 7M8103HX-STD
Maximum overall length: 20.0 millimetres
Maximum shaft size: 62.001 millimetres
Maximum tunnel size: 66.035 millimetres
Maximum vertical oil clearance: 0.084 millimetres
Maximum wall at crown: 1.991 millimetres
Minimum shaft size: 61.984 millimetres
Minimum tunnel size: 66.020 millimetres
Minimum vertical oil clearance: 0.068 millimetres
Fits engine code:
1JZ-GE / 1JZ-GTE / 2JZ-GE / 2JZ-GTE
