ACL Race connecting rod bearings for Nissan CA16, CA18, CA18DET, CA20 and CD17 engines with standard crankshaft. ACL Race Series is developed for tuning, performance and motorsport, where the bearings are exposed to higher loads, higher RPM and greater demands on load capacity and reliability than standard bearings.
ACL Race Series connecting rod bearings are made from high-strength F781 trimetal material with hardened steel backing, copper/lead alloy and a durable overlay coating. The material choice, heat transfer and oil distribution are developed to ensure a stable oil film and high load capacity at high RPM and demanding operating conditions.
4B1630H-STD is the STD version, which means the bearings fit a standard crankshaft with standard bearing dimensions. They are relevant for engine rebuilds, turbo conversions and high-performance engine builds where stronger connecting rod bearings than standard bearings are desired.
Specifications:
Type: ACL Race connecting rod bearings H-STD
Material: Trimetal copper/lead alloy (F781) with steel backing and overlay
Crankshaft: Standard size (STD)
Connecting rod: For original or aftermarket connecting rods
Bearing design: Identical bearing halves
Contents: 8 bearing halves (4 complete connecting rod bearings)
ACL part number: 4B1630H-STD
Maximum overall length: 18.60 millimetres
Maximum shaft size: 44.974 millimetres
Maximum tunnel size: 48.013 millimetres
Maximum vertical oil clearance: 0.058 millimetres
Maximum wall at crown: 1.505 millimetres
Minimum shaft size: 44.961 millimetres
Minimum tunnel size: 48.000 millimetres
Minimum vertical oil clearance: 0.016 millimetres
Fits engine code:
CA16 / CA16DE / CA18 / CA18DE / CA18DET / CA18ET / CA20E / CA20S / CD17
