Ford Sierra

1982-1993 of release

Repair and operation of the car


Ford Siyerra
+ 1.2. Identification of the car
+ 2. Maintenance
+ 3. General data
- 4. Engines
   - 4.1. Petrol engines
      - 4.1.1. Technical characteristics
         4.1.1.1. Head of the block of cylinders
         4.1.1.2. Block of cylinders of the engine
         4.1.1.3. Krivoshipno-shatunny mechanism
         4.1.1.4. System of gas distribution
         4.1.1.5. Lubrication system
         4.1.1.6. Cooling system
         4.1.1.7. Fuel system
         4.1.1.8. System of ignition
         4.1.1.9. Tightening moments
      4.1.2. Adjustment of gaps of valves
      + 4.1.3. System of ignition
      + 4.1.4. Fuel system
      + 4.1.5. The repair which is not demanding removal of the engine
      4.1.6. Removal and installation of the engine
      4.1.7. Dismantling of the engine
      4.1.8. Identification of the interacting parts
      4.1.9. Assembly of the engine
      4.1.10. Replacement of pistons
      4.1.11. Removal and installation of an intermediate shaft
      4.1.12. System of gas distribution
      4.1.13. Lubrication system
      + 4.1.14. Cooling system
      4.1.15. Suspension bracket of the power unit
      4.1.16. System of production of the fulfilled gases
   + 4.2. Diesel engine
+ 5. Coupling
+ 6. Transmissions
+ 7. Driveshaft and back bridge
+ 8. Steering
+ 9. Suspension brackets
+ 10. Brake system
+ 11. Body
+ 12. Electric equipment


a773976c



4.1.1.1. Head of the block of cylinders
GENERAL INFORMATION

The head is made of special alloy and has the saddles of valves executed directly in material of a head of the block of cylinders.

Designation:
  – 1,3 dm3 engine
3
  – 1,6 dm3 engine
6
  – 2,0 dm3 engine
0
Corner of a prileganiye of valves
44 °30' – 45 °
Valve saddle prileganiye width:
  – inlet
1,5 mm
  – final
2,0 mm
Maximum depth of regrinding of the lower plane of a head of the block of cylinders
0,154 mm
Diameters of openings of nests of bearings of a cam-shaft:
  – forward bearing
45,072 – 45,102 mm
  – average bearing
47,692 – 47,772 mm
  – back bearing
48,072 – 48,102 mm

Laying of a head of the block of cylinders

Brand: Reinz.

Guides of valves

Openings of guides are executed directly in a head of the block of cylinders.

Nominal diameter
8,063 – 8,088 mm
Repair size:
  – excess 0,2
8,263 – 8,288 mm
  – excess 0,4
8,463 – 8,488 mm

Valve

The valve are established in a head of the block of cylinders and 7 °30 are inclined at an angle' to a cylinder axis.

Sizes of valves (mm)

Engine
1,3 dm3
1,6 dm3
2,0 dm3
Valve inlet:
  – length
112,65 – 113,65
112,65 – 113,65
110,65 – 111,65
  – diameter of a plate
38,30 – 38,70
41,80 – 42,20
41,80 – 42,20
Valve final:
  – length
112,05 – 113,75
112,05 – 113,75
110,10 – 112,05
  – diameter of a plate
29,80 – 30,20
34,00 – 34,40
35,80 – 36,20

The sizes of inlet valves the general for all engines.

Diameter of a core

Nominal
8,025 – 8,043 mm
Repair size +0,2
8,225 – 8,243 mm
Repair size +0,4
8,425 – 8,443 mm
Repair size +0,6
8,625 – 8,643 mm
Repair size +0,8
8,825 – 8,843 mm

The sizes of final valves the general for all engines.

Diameter of a core

Nominal
7,999 – 8,017 mm
Repair size +0,2
8,199 – 8,217 mm
Repair size +0,4
8,399 – 8,417 mm
Repair size +0,6
8,599 – 8,617 mm
Repair size +0,8
8,799 – 8,817 mm

Core gap in a guide – 0,046–0,089 mm.

Working gap of valves (at the cold engine):
  – inlet valve
0,20 mm
  – final valve
0,25 mm

Springs of valves

Identical springs are applied to inlet and final valves.

Diameter of a spring
23,445 – 23,95 mm
Diameter of a wire of a spring
3,87 – 3,93 mm
Number of rounds
4,7
Free length
47,00 mm