Vauxhall Workshop Service and Repair Manuals > Astra H > J Engine and Engine Aggregates | Diesel Engine | Cylinder Block | Specifications

Crankshaft drive, cylinder block

1	Main bearing journal
2	Con-rod bearing journal
3	Main Bearing Journal (Guide Bearing)
4	Colour code for con-rod bearings
5	Colour code for crankshaft bearings (where bearings have different diameters) Note: Code number supplies the last two digits of the main bearing journal Ø
6	Colour code for crankshaft bearings (where bearings have the same diameter) Note: Code number shows the colour code of the crankshaft bearing
7	Colour code of bearing shells

Engine Z 19 DT / Z 19 DTL
Crankshaft dimensions			Ø Main bearing journal	Colour code
Class A	Code no. 1	mm	59.994 - 60.000	red
Class B	Code no. 2	mm	59.987 - 59.993	blue
Class C	Code no. 3	mm	59.982 - 59.986	Yellow
Class D	Code no. 6	mm	59.867 - 59.873	brown
Class E	Code no. 7	mm	59.861 - 59.867	green
Class F	Code no. 8	mm	59.855 - 59.861	Black

Crankshaft bearing shells			Thickness of main bearing shells	Colour code
Class A	Code no. 1	mm	1.831 - 1.837	red
Class B	Code no. 2	mm	1.836 - 1.844	blue
Class C	Code no. 3	mm	1.843 - 1.849	Yellow
Class D	Code no. 6	mm	1.894 - 1.900	brown
Class E	Code no. 7	mm	1.899 - 1.907	green
Class F	Code no. 8	mm	1.906 - 1.912	Black
Permissible crankshaft bearing clearance		mm	0.011 - 0.071
Axial clearing of crankshaft		mm	0.049 - 0.211

Engine Z 19 DT / Z 19 DTL
Con-rod dimensions
Con-rod bearing dimensions			Ø Con-rod bearing journal	Colour code
	Class A	mm	50.799 - 50.805	red
	Class B	mm	50.793 - 50.799	blue
	Class C	mm	50.787 - 50.793	Yellow
	Class D	mm	50.672 - 50.678	brown
	Class E	mm	50.666 - 50.672	green
	Class F	mm	50.660 - 50.666	Black

Con-rod bearing shells			Thickness of con-rod bearing shells	Colour code
	Class A	mm	1.527 - 1.531	red
	Class B	mm	1.530 - 1.534	blue
	Class C	mm	1.533 - 1.537	Yellow
	Class D	mm	1.591 - 1.595	brown
	Class E	mm	1.595 - 1.599	green
	Class F	mm	1.599 - 1.603	Black
Permissible con-rod bearing clearance		mm	0.016 - 0.070
Internal diameter of big end		mm	53.883 - 53.923
Internal diameter of small end bush		mm	26.006 - 26.012
Con-rod weight difference		g	5

1	Cylinder bore designation Note: The letter indicates the classification
2	Cylinder Bore
3	Oil scraper ring
4	Compression ring 2
5	Compression ring 1
6	Piston diameter

Engine Z 19 DT / Z 19 DTL
Ø Cylinder bore				New dimension	Oversize
	Class A		mm	82.000 - 82.010	0.100
	Class B		mm	82.010 - 82.020	0.100
	Class C		mm	82.020 - 82.030	0.100
Tapering of cylinder bore			mm	< 0.005
Oval status of cylinder bore			mm	< 0.050
Ø Piston
	Class A		mm	81.920 - 81.930
	Class B		mm	81.930 - 81.940
	Class C		mm	81.940 - 81.950
Piston projection
	Marking on cylinder head gasket			Dimension	Thickness of cylinder head gasket
		without hole	mm	0.014 - 0.104	0.770 - 0.870
		one hole	mm	0.105 - 0.205	0.870 - 0.970
		two holes	mm	0.206 - 0.294	0.970 - 1.070
Piston weight difference			g	10
Piston Rings
	Compression ring 1
		Thickness	mm	1.970 - 1.995
		Gap	mm	0.200 - 0.350
		Vertical play	mm	0.085 - 0.130
	Compression ring 2
		Thickness	mm	1.970 - 1.995
		Gap	mm	0.250 - 0.500
		Vertical play	mm	0.025 - 0.070
	Oil scraper ring with spiral-type expander
		Thickness	mm	1.970 - 1.990
		Gap	mm	0.250 - 0.500
		Vertical play	mm	0.030 - 0.070

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