ACL Race ConConrod bearings Ford / Mazda Duratec / LF MZR (STD)

ACL bearings are used for tuning and engine upgrades where you want better quality with higher bearing capacity than normal standard bearings.
Improvements of material, dynamic thickness, heat conduction, oil grooves and oil distribution are some of the points that make ACL one of the leading bearing manufacturers.
Bearing data
Part number: 
4B8170H
Bearing size: 
STD
Bearing half type: 
Identical halves
Bearing material: 
F781
Technical data (mm)
Max overall length: 
17
Max shaft size: 
50
Max tunnel size: 
53.045
Max vertical oil clearance: 
0.052
Max wall at crown: 
1.5
Min shaft size: 
49.98
Min tunnel size: 
53.025
Min vertical oil clearance: 
0.026
Technical data (in)
Max overall length: 
0.669290006
Max shaft size: 
1.968500018
Max tunnel size: 
2.088381669
Max vertical oil clearance: 
0.00204724
Max wall at crown: 
0.059055001
Min shaft size: 
1.967712618
Min tunnel size: 
2.087594269
Min vertical oil clearance: 
0.00102362
Engine code
Duratec 23 / L3 MZR
Application
Ford 140ci (2.3L) Duratec 23 Inline4 DOHC 4v
Mazda L3 MZR 2260cc Inline4 DOHC 4v
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