ACL Race main bearings for Toyota 1JZ-GE, 1JZ-GTE, 2JZ-GE and 2JZ-GTE engines with crankshaft ground 0.25 millimetres below standard size. ACL Race Series is developed for high-load engines and is often used for tuning, motorsport and performance engine builds where greater demands are placed on the bearings than during a standard rebuild.
ACL Race Series bearings are manufactured from ACL's F781 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 engine speeds and high cylinder pressure.
ACL Race Series is known for precise tolerances, stable oil distribution and good resistance to load. These properties help maintain a stable oil film under hard load and make the bearings suitable for tuning, performance and motorsport.
Specifications:
Type: ACL Race main bearings
Material: Trimetal copper/lead alloy (F781) with steel backing and overlay
Crankshaft: Crankshaft ground 0.25 millimetres below standard size
Oil clearance: 0.043–0.059 millimetres
Bearing type: Upper and lower main bearings
Contents: 10 bearing halves (5 complete main bearings)
ACL part number: 7M8103H.25
Maximum overall length: 20.0 millimetres
Maximum shaft size: 61.751 millimetres
Maximum tunnel size: 66.035 millimetres
Maximum vertical oil clearance: 0.059 millimetres
Maximum wall at crown: 2.129 millimetres
Minimum shaft size: 61.734 millimetres
Minimum tunnel size: 66.020 millimetres
Minimum vertical oil clearance: 0.043 millimetres
Fits engine code:
1JZ-GE / 1JZ-GTE / 2JZ-GE / 2JZ-GTE
