26 TECHNICAL DATA
26.2
Tolerance, engine wear limits
Valve - run-out
At the valve plate
s; 0.05 mm (s; 0.002 in)
Valve spring
Minimum length of intake valve
42 mm (1.65 in)
Minimum length of exhaust valve
42 mm (1.65 in)
Valve - sealing seat width
Intake
1 .40 mm (0.0551 in)
Exhaust
1.40 mm (0.0551 in)
Valve spring seat - thickness
0.90 ... 1.10 mm (0.0354 ... 0.0433 in)
Camshaft bearing - sleeve bearing
Radial clearance
0.020 ... 0.054 mm (0.00079 ... 0.00213 in)
Wear limit
0.065 mm (0.00256 in)
Cylinder/cylinder head - distortion of sealing area
s; 0.10 mm (s; 0.0039 in)
Piston - diameter
Size I
77.955 ... 77.965 mm (3.06909 ... 3.06948 in)
Size II
77.965 ... 77.975 mm (3.06948 ... 3.06988 in)
Cylinder - drill hole diameter
Size I
78.000 ... 78.012 mm (3.07086 ... 3.07133 in)
Size II
78.012 ... 78.025 mm (3.07133 ... 3.07184 in)
Piston/cylinder - mounting clearance
Size I
0.035 ... 0.057 mm (0.00138 ... 0.00224 in)
Size II
0.037 ... 0.060 mm (0.00146 ... 0.00236 in)
Wear limit
0.070 mm (0.00276 in)
Piston ring - end gap
Compression ring
s; 0.40 mm (s; 0.0157 in)
Oil scraper ring
s; 0.70 mm (s; 0.0276 in)
Connecting rod - axial play of lower conrod bearing
0.20 ... 0.45 mm (0.0079 ... 0.01 77 in)
Crankshaft - run-out at bearing pin
s; 0.03 mm (s; 0.0012 in)
Clutch facing discs - thickness of total package
� 26.4 mm (� 1.039 in)
Oil pressure regulator valve
Minimum length of pressure spring
23.5 mm (0.925 in)
Shift shaft - sliding plate/shift quadrant clearance
0.40 ... 0.80 mm (0.0157 ... 0.0315 in)
Engine oil consumption
s; 30 ml/h (s; 1.01 fl. oz./hr)
26.3
Engine tightening torques
Nozzle, crank chamber ventilation
M4
2 Nm (1 .5 lbf ft)
Loctite
®
243
™
Oil nozzle for alternator cooling
M4
2 Nm (1 .5 lbf ft)
Loctite
®
243
™
Oil nozzle for balancer shaft lubri-
M4
2 Nm (1 .5 lbf ft)
cation
Loctite
®
243
™
Oil nozzle for conrod bearing
M4
2 Nm (1 .5 lbf ft)
lubrication
Loctite
®
243
™
256