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Wiring diagrams Section: DOHC Petrol Engine

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Cylinder Head - V6 Opel Vectra C

DOHC Petrol Engine 1 illustration

Illustration

1. Cylinder head height
2. Installation height of valve guide
3. Installation height of valve
4. Valve seat width in cylinder head
5. Valve seat angle in cylinder head
6. Valve stem diameter
7. Valve seat angle at valve
8. Valve length
9. Valve head – diameter

Cylinder Head - V6

Engine			Z 32 SE
Cylinder head height 1)		mm	134
Valve seat width in cylinder head
	Intake valve	mm	1.0 – 1.4
	Exhaust valve	mm	1.4 – 1.8
Valve seat angle in cylinder head			90°
Valve guide inside diameter
	Standard size	mm	6.000 – 6.012
	Oversize (0.075)	mm	6.075 – 6.090
	Oversize (0.150)	mm	6.150 – 6.165
Length of valve guide
	Intake valve	mm	44.70 – 45.30
	Exhaust valve	mm	34.70 – 35.30
Installation height of valve guide
	Intake valve	mm	13.7 – 14.0
	Exhaust valve	mm	13.7 – 14.0
Installation height of valves
	Standard size	mm	39.6 – 40.2
	Oversize (0.075)	mm	39.2 – 39.8
	Oversize (0.150)	mm	39.2 – 39.8

Engine				Z 32 SE
Valve length
	Standard size
		Intake valves (GM)	mm	101.90 – 102.30
		Exhaust valve (GM)	mm	92.05 – 92.45
	Oversize (0.075)
		Intake valves (GM K1)	mm	101.50 – 101.90
		Exhaust valve (GM K1)	mm	91.65 – 92.05
	Oversize (0.150)
		Intake valves (GM K2)	mm	101.50 – 101.90
		Exhaust valve (GM K2)	mm	91.65 – 92.05
Ø valve stem
	Standard size
		Intake valves (GM)	mm	5.955 – 5.970
		Exhaust valve (GM)	mm	5.945 – 5.960
	Oversize (0.075)
		Intake valves (GM K1)	mm	6.030 – 6.045
		Exhaust valve (GM K1)	mm	6.020 – 6.035
	Oversize (0.150)
		Intake valves (GM K2)	mm	6.105 – 6.120
		Exhaust valve (GM K2)	mm	6.095 – 6.110

Engine			Z 32 SE
Valve stem play
	Intake valve	mm	0.03 – 0.057
	Exhaust valve	mm	0.04 – 0.067
Perm. runout of the valve stem		mm	0.03
Ø valve head
	Intake valve	mm	31.9 – 32.1
	Exhaust valve	mm	28.9 – 29.1
Valve seat angle at valve head		mm	90° 40'
Valve rotator
	Intake valve		none
	Exhaust valve		none

Engine				Z 32 SE
Camshaft
	Cam lift
		Intake	mm	10.0
		Exhaust	mm	10.0

1

) Resurfacing of the cylinder head is not permitted.