Home/Opel/Zafira/Opel Zafira B (2005-2011)/Repair manual/Diesel Engine/Cylinder Head

Contents

Wiring diagrams Section: Diesel Engine

All sections

Cylinder Head Opel Zafira B

Diesel 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

Engine					(X20 DTL, Y 20 DTH, Y 22 DTR
Cylinder head height 1)				mm	140
Valve seat width in cylinder head
			Intake valve	mm	1.4 – 1.8
			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
Length of valve guide
			Intake valve	mm	44.75 – 45.25
			Exhaust valve	mm	34.75 – 35.25
Installation height of valve guide
			Intake valve	mm	11.2 – 11.5
			Exhaust valve	mm	11.2 – 11.5
Installation height of valves
			Standard size	mm	37.0 – 37.6
			Oversize (0.075)	mm	36.6 – 37.2

Engine					(X20 DTL, Y 20 DTH, Y 22 DTR
Valve length
	Standard size
		Intake valve (GM)		mm	96.90 – 97.30
		Exhaust valve (GM)		mm	96.90 – 97.30
	Oversize (0.075)
		Intake valve (GM K1)		mm	96.50 – 96.90
		Exhaust valve (GM K1)		mm	96.50 – 96.90
Ø Valve shaft
	Standard size
		Intake valve (GM)		mm	5.955 – 5.970
		Exhaust valve (GM)		mm	5.945 – 5.960
	Oversize (0.075)
		Intake valve (GM K1)		mm	6.030 – 6.045
		Exhaust valve (GM K1)		mm	6.020 – 6.035

Engine					(X20 DTL, Y 20 DTH, Y 22 DTR
Valve stem play
		Intake valve		mm	0.030 – 0.057
		Exhaust valve		mm	0.040 – 0.067
perm. runout of the valve stem				mm	0.03
Ø Valve disc
		Intake valve		mm	28.9 – 29.1
		Exhaust valve		mm	25.9 – 26.1
Valve seat angle at valve head				mm	90° 40'
Valve rotator
		Intake valve			No code
		Exhaust valve			No code
Camshaft
	Cam lift
		Intake		mm	8.5
		Exhaust		mm	8.5

1

) Regrinding the cylinder head is not permissible.