Rebuild Specifications

Main Bearing Journal Diameter 63.983-64.003 mm (2.5190-2.5198 in.)
Main Bearing Journal Out-of-Round Limit 0.008 mm (0.0003 in.)
Main Bearing Journal Taper Limit 0.06 mm (0.0006 in.) TOTAL
0.013 mm (0.0003 in.) per 25 mm (1 in.)
Main Bearing Journal Runout Limit
Runout of journals 2 and 3 to journals 1 and 4 0.05 mm (0.002 in.)
Runout of adjacent journals to each other 0.05 mm (0.002 in.)
Surface Finish (RMS) 0.25 micrometers (10.0 micro in.)
Thrust Bearing Journal Length 25.775-25.825 mm (1.0148-1.067 in.)
Main Bearings Clearance to Crankshaft (Desired) 0.025-.035 mm (0.001-0.0014 in.)
Main Bearings Clearance to Crankshaft (Allowable) 0.020-.066 mm (0.00050.0023 in.)
Main Bearing Wall Thickness (Std.) 2.444-2.481 mm (0.0962-0.0976 in.) 1st and 2nd
Main Bearing Wall Thickness (Std.) 2.491-2.427 mm (0.0980-0.0956 in.) 3rd and Rear