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Wiring diagrams Section: OHC Petrol Engine

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Cylinder Head Opel Combo C

OHC Petrol Engine 1 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

Engine			Z 16 SE
Cylinder head height 1)		mm	95.90 – 96.10
Valve seat width in cylinder head
	Intake valve	mm	1.3 – 1.5
	Exhaust valve	mm	1.6 – 1.8
Valve seat angle in cylinder head			90°
Valve guide inside diameter
	Standard size	mm	7.030 – 7.050
	Oversize (0.075)	mm	7.105 – 7.125
	Oversize (0.150)	mm	7.180 – 7.200
Length of valve guide
	Intake valve	mm	45.5
	Exhaust valve	mm	45.5
Installation height of valve guide		mm	80.85 – 81.25
Installation height of valves		mm	13.75 – 14.35

Engine				Z 16 SE
Valve length
	Standard size
		Intake valve (GM)	mm	101.65 – 101.95
		Exhaust valve (GM)	mm	101.15 – 101.85
	Oversize (0.075)
		Intake valve (GM K1)	mm	101.25 – 101.55
		Exhaust valve (GM K1)	mm	100.75 – 101.45
	Oversize (0.150)
		Intake valve (GM K2)	mm	101.25 – 101.55
		Exhaust valve (GM K2)	mm	100.75 – 101.45
Ø Valve stem
	Standard size
		Intake valve (GM)	mm	6.998 – 7.012
		Exhaust valve (GM)	mm	6.978 – 6.992
	Oversize (0.075)
		Intake valve (GM K1)	mm	7.073 – 7.087
		Exhaust valve (GM K1)	mm	7.053 – 7.067
	Oversize (0.150)
		Intake valve (GM K2)	mm	7.148 – 7.162
		Exhaust valve (GM K2)	mm	7.128 – 7.142

Engine			Z 16 SE
Valve stem play
	Intake valve	mm	0.018 – 0.052
	Exhaust valve	mm	0.038 – 0.072
Perm. runout of the valve stem		mm	0.03
Ø Valve head
	Intake valve	mm	38.0
	Exhaust valve	mm	31.0
Valve seat angle at valve head			92°
Valve rotator
	Intake valve		none
	Exhaust valve		none

Engine				Z 16 SE
Camshaft
	Cam lift
		Intake	mm	9.08
		Exhaust	mm	9.99

1

) Resurfacing of the cylinder head is not permitted.