Specifications, Mechanical
Specifications, mechanicalValves
Valve crown diameter (A)
Inlet 31.00 +/- 0.15 mm
Exhaust 27.00 +/- 0.15 mm
Valve stem diameter (B) Intake 6.970 +0/-0.015 mm
Valve stem diameter (B1) Exhaust H1 = 17.40 mm 6.963 +/- 0.007 mm
Valve stem diameter (B2) Exhaust H2 = 70.40 mm 6.953 +/- 0.007 mm
Total valve length (C)
Inlet 104.25 +/- 0.25 mm
Exhaust 103.30 +/- 0.25 mm
Disc edge height (D)
Inlet and exhaust 1.50 mm
Minimum height after grinding 1.20 mm
Mating surface angle (E) Inlet and exhaust 44.5°
Valve stem vertical position
Valve stem height 48.4 +/- 0.5 mm
Maximum machining of the valve stem 0.5 mm
Valve seats
Angles
A
Upper inlet reduction angle 20°
Upper exhaust reduction angle 15°
B Inlet and exhaust matching surface angles 45°
C Lower reduction angle 60°
a
Width of the intake valve seat 1.4-1.8 mm
Width of the exhaust valve seat 1.8-2.2 mm
Valve lifters
Valve lifters, dimensions
A External diameter 32.000 +0.025/ 0.041 mm
B External height 26.0 +/- 0.5 mm
C Solid valve lift shaft length; 15.96 mm at
0.02 mm stages up to 16.16 mm. The dimensions are listed on the inside of each valve lifter.
Valve springs
Valve springs, dimensions
Length 145.1 +1.5/-0.5
Type Conical
Valve guides
Clearance between new components: Inlet and exhaust 0.03-0.06 mm
Maximum play for used components: Inlet and exhaust 0.15 mm
Camshafts
Maximum lift height
Inlet 8.65
Exhaust 8.80
Cylinder head
Maximum out-of-true
Front-rear 0.50 mm
Lateral 0.20 mm
Cylinder head height 129.0 +/- 0.05 mm
Maximum machining 0.30 mm
Caution: Scratches and corrosion to the cylinder head gasket face should only be machined on a flat cylinder head.
Tightening torque
Thread Tightening torque (Nm)
M5 5
M6 10
M7 17
M8 24
M10 50
M12 80
M14 130
Exhaust system (to the turbocharger (TC)) 30 Nm
Cylinder head Tighten the screws in sequence from the center and outwards.
Stage 1 20 Nm
Stage 2 60 Nm
Stage 3 angle-tighten 130°
Manifold (cylinder head side) 25 Nm
Pipe screws (coolant pipe / turbocharger (TC)) 26 Nm
Pipe screws (water heated crankcase ventilation.) 26 Nm
Pipe screws (oil pressure line / turbocharger (TC)) 26 Nm
Pipe screws (oil pressure line / engine block) 38 Nm
Intake manifold 19 Nm
Stud (at exhaust port, manifold, turbocharger (TC)) 20 Nm