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Procedure of the general and engine major repairs
Specifications Line 6-cylinder engine of 4.0 liters Common parameters | Displacement | 4.0 liters (4228 cm 3) | | Compression cylinder pressure (kgf / cm 2) | 8.4 - 10.5 | | The maximum allowable difference in compression pressure between cylinders (kgf / cm 2) | 2.1 | | Oil pressure (kgf / cm 2) | | 0.9 | - When engine speed 1600 rev / min
| 2.6 - 5.3 |
Engine block | Bore (mm) | 98.43 - 98.48 | | Permissible taper and roundness (mm) | 0.03 | | The maximum permissible flatness of the mating surface with the cylinder head | 0.05 mm to 152.4 mm in length | | The diameter of the nests of pushers (mm) | 23.000 - 23.025 |
Cylinder Head and Valves | The maximum permissible flatness head | 0.05 mm to 152.4 mm in length | | The minimum width of the cylindrical portion (girdle) valve plates (mm) | 0.79 | | Angle seat valves (intake and exhaust) | 44,5 ?� | | Corner of a working facet of the valve plates (intake and exhaust) | 45 ?� | | The diameter of the valve stem (mm) | 7.90 - 7.92 | | The clearance between the valve stem and the wall of the guide sleeve (mm) | 0,025 - 0,076 | | Free length of the valve spring (mm) | 49.96 | | Installation height of the valve spring (mm) | 41.7 | | Valve length (mm) | | 122.48 - 122.86 | | 122.86 - 123.24 |
The crankshaft and connecting rods | The diameter of crankpins (mm) | 53.172 - 53.226 | | Connecting rod bearing clearance (mm) | | 0,038 - 0,051 | | 0,025 - 0,076 | | Side clearance (axial clearance) of rods (mm) | 0.25 - 0.48 | | The diameter of the main journals (mm) | 63.490 - 63.503 | | Backlash in radical bearings (mm) | | 0.05 | | 0.025 - 0.064 | | Crankshaft end play (for thrust bearing) (mm) | 0,038 - 0,165 | | The maximum permissible taper and roundness (for all necks) (mm) | 0,013 |
Pistons and piston rings | The clearance between the piston and the cylinder wall (mm) | | 0,033 - 0,038 | | 0,033 - 0,038 | | The gap piston ring (mm) | | 0.25 - 0.51 | - Scraper ring (steel section)
| 0.25 - 0.64 | | Backlash piston rings (mm) | | | 0,043 | | 0,043 - 0,081 | | | 0,076 | | 0.025 - 0.241 |
Efforts of a tightening of carving connections, N ??? m * Bolts main bearing caps | 108 | Nuts caps bottom heads of rods (rod bearing) | 45 |
The V8 engine capacity of 5.2 liters Common parameters | Displacement | 5.2 liters (5211 cm 3) | | Compression cylinder pressure (kgf / cm 2) | 8.4 - 10.5 | | The maximum allowable difference in compression pressure between cylinders (kgf / cm 2) | 2.1 | | Oil pressure (kgf / cm 2) | | | At idle (600 rev / min) | 0.7 | | At an engine speed of 3000 rev / min | 2.1 - 5.6 |
Engine block | Bore (mm) | 99.31 - 99.42 | | Permissible taper (mm) | 0.25 | | Permitted roundness (mm) | 0.13 | | The maximum permissible flatness of the mating surface with the cylinder head | 0.05 mm to 152.4 mm in length | | The diameter of the nests of pushers (mm) | 22.990 - 23.010 |
Cylinder Head and Valves | The maximum permissible flatness head | 0.05 mm to 152.4 mm in length | | The minimum width of the cylindrical portion (girdle) valve plates (mm) | 1.19 | | Angle seat valves (intake and exhaust) | 44,25 - 44,75 ?� | | Corner of a working facet of the valve plates (intake and exhaust) | 43,25 - 43,75 ?� | | The diameter of the valve stem (mm) | 7.90 - 7.92 | | The clearance between the valve stem and the wall of the guide sleeve (mm) | 0,025 - 0,076 | | Free length of the valve spring (mm) | 49.96 | | Installation height of the valve spring (mm) | 41.7 | | Valve length (mm) | | 124.28 - 124.92 | | 124.64 - 125.27 |
The crankshaft and connecting rods | The diameter of crankpins (mm) | 53.95 - 53.98 | | Connecting rod bearing clearance (mm) | | 0.01 - 0.06 | | 0,008 | | Side clearance (axial clearance) of rods (mm) | 0.15 - 0.36 | | The diameter of the main journals (mm) | 63.487 - 63.513 | | Backlash in radical bearings (mm) | | 0.01 - 0.04 | | | 0.01 - 0.05 | | 0.06mm | | Axial clearance of the crankshaft (mm) | 0.05 - 0.18 | | The maximum permissible taper and roundness (for all necks) (mm) | 0,025 |
Pistons and piston rings | The clearance between the piston and the cylinder wall (mm) | 0,013 - 0,038 | | The gap piston ring (mm) | | 0.25 - 0.51 | - Scraper ring (steel section)
| 0.25 - 1.27 | | Backlash piston rings (mm) | | 0,038 - 0,076 | | 0.05 - 0.20 |
Efforts of a tightening of carving connections * N ??? m Bolts main bearing caps | 115 | Nuts caps bottom heads of rods (rod bearing) | 61 |
 | * For details, see. Chapter Specifications Engine V8. |
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