Cylinder Block Assembly: Specifications

11 11 Engine Block (crankcase) W10 / COOPER B16
Bore diameter a) 76.992-77.008 mm
Permitted out-of-round of cylinder bore a) 0.0076 mm
Permitted conicity of cylinder bore a) 0.051 mm
Permissible total wear tolerance between piston and cylinder (engine operated) 0.100 mm
a) new condition

11 21 Crankshaft and Bearings W10 / COOPER B16
Main journal diameter 47.922-48.008 mm
Radial play of main bearings 0.022-0.062 mm
Radial play of main bearings (wear limit) 0.700 mm
Axial play of crankshaft 0.090-0.240 mm
Axial play of crankshaft (wear limit) 0.300 mm
Conrod bearing journal diameter 43.992-44.008 mm
Radial play of conrod bearings 0.023-0.067 mm
Radial play of conrod bearings (wear limit) 0.070 mm

Crankshaft Main Bearing Cap Bolts





First pass: Fit screws 1 to 10
Tightening torque 11 11 1AZ
Final pass: Fit screws 11 to 20
Tightening torque 11 11 2AZ

11 25 Pistons with Rings and Pins W10 / COOPER B16





Pistons and pins are matched - only replace together in pairs
Measuring point "A" (position)
Piston dia. at measuring point "A"
Original (new dimension) 76.956-76.974 mm
Piston running clearance 0.018-0.520 mm
Permissible total play between piston and cylinder (engine operated) 0.150 mm
1st groove
End clearance 0.200-0.360 mm
Contact clearance (wear limit) 0.800 mm
Axial play 0.025-0.065 mm
2nd groove
End clearance 0.250-0.460 mm
Contact clearance (wear limit) 1.000 mm
Axial play 0.025-0.065 mm
3rd groove
End clearance 0.200-0.580 mm
Contact clearance (wear limit) 1.000 mm
Axial play 0.004-0.178 mm

11 23 1AZ Vibration Damper To Crankshaft
W10/W11 M12
Replace screw 115 Nm