Cylinder Block Assembly: Specifications

Bore 96 mm (3.78 in)
Stroke 96.4 mm (3.8 in)
Crankshaft Forged, supported by 5 bearings
Crankshaft bearing Binary bearings, dia. 64 mm (2.52 in)
Connecting rod steel, cracked rod, forged, l = 157.4 mm (6.2 in.)
Connecting-rod bearing Three-component bearings, dia. 54 mm (2.13 in)





Lower part of crankcase to upper part of crankcase (cross bolt connection) M8 x 70; always use new aluminium screws
Initial tightening 10 Nm (7.5 ftlb.)
Final tightening 90°

Lower part of crankcase to upper part of crankcase M8 x 35 (2 ea.)
Tightening torque 23 Nm (17 ftlb.)

Lower part of crankcase to upper part of crankcase M8 x 50 (2 ea.)
Tightening torque 23 Nm (17 ftlb.)

Connecting rod cap to connecting rod M9 x 56 (16 ea.)
Step 1 Tightening sequence as synchronous as possible; use new bolts
Tightening torque 8 Nm (6 ftlb.) +2 Nm (+1.5 ftlb.)
Step 2 Tightening sequence as synchronous as possible; use new bolts
Tightening torque 20 Nm (15 ftlb.)
Step 3 Tightening sequence as synchronous as possible; use new bolts
Tightening torque 40 Nm (30 ftlb.)
Step 4 Tightening sequence as synchronous as possible; use new bolts
Torque angle 90°

Vibration damper to crankshaft M18 x 1.5 x 72 (1 ea.)
Step 1 Counter screw torque at damper
Tightening torque 20 Nm (15 ftlb.)
Step 2 Counter screw torque at damper
Tightening torque 50 Nm (37 ftlb.)
Step 3 Counter screw torque at damper
Tightening torque 100 Nm (74 ftlb.)
Step 4 Counter screw torque at damper
Torque angle 180°