Cylinder Head C 26 Ne
Identification Blue/green/pink
Stamped C 2.6 NE
Total height of cylinder head
(sealing surface to sealing surface) mm 101.45 to 101.95
Sealing surface 0.025
Peak - to - valley height mm
Uneveness
on 150 mm length max. mm 0.015
on total length max. mm 0.040
Cylinder head gasket
Identification _________
Thickness - installed mm \ \ \ ° \ \ \
0.8
Valve seat angle ° 45
Valve stem play
Inlet mm 0.035 to 0.073
Exhaust mm 0.045 to 0.085
Valve System C 26 NE
Lifter
Valve rotator Exhaust
Valve timing
Inlet Opens ° BTDC 30
Closes ° ABDC 84
Duration 294
Exhaust Opens ° BBDC 75
Closes ° ATDC 39
Duration 295
Valve overlapping 69
Valve lift (play = 0) mm 10.468
Valve spring (inlet and exhaust)
Valve closed N at mm 490 at 40
Valve open N at mm 834 at 30
Runout of valve stem to cone
mm Inlet max. 0.04
Exhaust max. 0.03
C 26 NE
Valves
| Valve dimensions | .P. A1540.tif | 8 | 4 | tiff;; | |||
|---|---|---|---|---|---|---|---|
| A in mm | B in mm | C (Durchmesser in mm) | D in ° | ||||
| Identification | Normal | Oversize 1 | Oversize 2 | Oversize A | |||
| - | - | 0.075 | 0.150 | 0.300 | |||
| none | white | green | none | ||||
| Inlet | 122.3 | 40 ± 0.15 | 8.990 | ||||
| 8.977 | 9.065 | ||||||
| 9.052 | 9.140 | ||||||
| 9.127 | 9.290 | ||||||
| 9.277 | 44 | ||||||
| Outlet | 123.4 | 36 ± 0.15 | 8.980 | ||||
| 8.965 | 9.055 | ||||||
| 9.040 | 9.130 | ||||||
| 9.115 | 9.280 | ||||||
| 9.265 | 44 | ||||||
| Valve stem bore | - | - | 9.050 | ||||
| 9.025 | 9.125 | ||||||
| 9.100 | 9.200 | ||||||
| 9.175 | 9.350 | ||||||
| 9.325 | - |
Camshaft C 26 NE
Letter codes V
Colour codes, standard size blue
Colour codes, extra for undersize - 0.1 violet
Radial runout max. mm 0.025
End play mm 0.1 to 0.2
Cam lift, inlet and exhaust mm 6.860
Camshaft C 26 NE
Grinding dimension for camshaft and bearings
Grind camshaft journals to diameters
specified in mm below
Journal No.
1 2 3 4 5 6
Standard size 48.970 48.720 48.595 48.470 48.345 48.220
48.955 48.705 48.580 48.455 48.330 48.205
0.1 mm undersize 48.870 48.620 48.495 48.370 48.245 48.120
48.855 48.605 48.480 48.355 48.230 48.105
The camshaft bearing journals and the bearing positions in the cylinder head are identified in the table by the numbers 1 to 6.
The numbering is from front (water pump side) to rear.
Camshaft bearing bushings outside diameter in mm
Bearing No. 1 2 3 4 5 6
53.640 53.390 53.140 52.890 52.640 52.390
53.600 53.350 53.100 52.850 52.600 52.350
Diameter for bearing bushings in cylinder head in mm
Bearing No. 1 2 3 4 5 6
53.350 53.280 53.030 52.780 52.530 52.280
53.500 53.250 53.000 52,750 52.500 52.250
The P & A Department supplies fully finished camshaft bearings in standard size and 0.1 mm undersize.