Home/Opel/Corsa/Opel Corsa B (1993-2000)/Repair manual/OHC Petrol Engine/Technical Data - Crank Drive, Cylinder Block

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Wiring diagrams Section: OHC Petrol Engine

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Technical Data - Crank Drive, Cylinder Block Opel Corsa B

OHC Petrol Engine 3 illustrations

Crank Drive, Cylinder Block

Technical Data - Crank Drive, Cylinder Block

Main bearing journal
Con-rod bearing journal
3 main bearing journals (guide bearing)
Crankshaft colour code
Bearing shell colour code
Bearing shell identification

Crank Drive, Cylinder Block

Illustration

Technical Data - Crank Drive, Cylinder Block

1 and 3	Index - identification of cylinder bore

2	Index-identification of crankshaft bearing shell mount in cylinder block

Crank Drive, Cylinder Block

Engine		12 NZ, C 12 NZ, X 12 SZ, C 14 NZ, C 14 SE, X 14 SZ
Crankshaft dimensions		� Main bearing journal 1 - 5	Colour code
	Standard size	mm	54.980 - 54.997	brown
		mm	54.980 - 54.997	green
	Undersize (0.25)	mm	54.730 - 54.747	brown/blue
		mm	54.730 - 54.747	green/blue
	Undersize (0.5)	mm	54.482 - 54.495	brown/white
		mm	54.482 - 54.495	green/white
			� Con-rod journal 1 - 4
	Standard size	mm	42.971 - 42.987	-
	Undersize (0.25)	mm	42.721 - 42.737	blue
	Undersize (0.5)	mm	42.471 - 42.487	white
			3 wide main bearing journals (guide bearing)
	Standard size	mm	26.000 - 26.052	-
	Undersize (0.20)	mm	26.200 - 26.252	-
	Undersize (0.40)	mm	26.400 - 26.452	-

Crank Drive, Cylinder Block

Engine		12 NZ, C 12 NZ, X 12 SZ, C 14 NZ, C 14 SE, X 14 SZ
Crankshaft bearing 1, 2, 4, 5		Lower crankshaft bearing shell
		Colour code	Thickness	Identification GM 400
	Standard size	mm	brown	1.989 - 1.995	221 N
	mm	green	1.995 - 2.001	201 N
	Undersize (0.25)	mm	brown/blue	2.114 - 2.120	222 A
	mm	green/blue	2.120 - 2.126	202 A
	Undersize (0.50)	mm	brown/white	2.239 - 2.245	223 B
	mm	green/white	2.245 - 2.251	203 B
		Upper crankshaft bearing shell
	Standard size	mm	brown	1.989 - 1.995	221 N
	mm	green	1.995 - 2.001	201 N
	Undersize (0.25)	mm	brown/blue	2.114 - 2.120	222 A
	mm	green/blue	2.120 - 2.126	202 A
	Undersize (0.50)	mm	brown/white	2.239 - 2.245	223 B
	mm	green/white	2.245 - 2.251	203 B
Perm. crankshaft bearing clearance	mm	0.015 - 0.041

Crank Drive, Cylinder Block

Engine		12 NZ, C 12 NZ, X 12 SZ, C 14 NZ, C 14 SE, X 14 SZ
3 crankshaft bearings		Lower crankshaft bearing shell
(guide bearing)		Colour code	Thickness	Identification GM 400
	Standard size	mm	brown	1.989 - 1.995	225 N
	mm	green	1.995 - 2.001	205 N
	Undersize (0.25)	mm	brown/blue	2.114 - 2.120	226 A
	mm	green/blue	2.120 - 2.126	206 A
	Undersize (0.50)	mm	brown/white	2.239 - 2.245	227 B
	mm	green/white	2.245 - 2.251	207 B
		Upper crankshaft bearing shell
	Standard size	mm	brown	1.989 - 1.995	225 N
	mm	green	1.995 - 2.001	205 N
	Undersize (0.25)	mm	brown/blue	2.114 - 2.120	226 A
	mm	green/blue	2.120 - 2.126	206 A
	Undersize (0.50)	mm	brown/white	2.239 - 2.245	227 B
	mm	green/white	2.245 - 2.251	207 B

Crank Drive, Cylinder Block

Engine		12 NZ, C 12 NZ, X 12 SZ, C 14 NZ, C 14 SE, X 14 SZ
3 crankshaft bearings		Lower crankshaft bearing shell
(guide bearing)		Colour code	Thickness	Identification
	Standard size	mm	green - brown	25.850 - 25.900	-

	Undersize (0.25)	mm	brown/blue	26.050 - 26.100	-
		green/blue
	Undersize (0.50)	mm	brown/white	26.250 - 26.300	-
		green/white

Crank Drive, Cylinder Block

Engine		12 NZ, C 12 NZ, X 12 SZ, C 14 NZ, C 14 SE, X 14 SZ
Con-rod bearing		Lower con-rod bearing shell
		Colour code	Thickness	Identification GM 985.3
	Standard size	mm	-	1.485 - 1.497	264 N
	Undersize (0.25)	mm	blue	1.610 - 1.622	265 A
	Undersize (0.50)	mm	white	1.735 - 1.747	266 B
		Upper con-rod bearing shell
	Standard size	mm	-	1.485 - 1.497	264 N
	Undersize (0.25)	mm	blue	1.610 - 1.622	265 A
	Undersize (0.50)	mm	white	1.735 - 1.747	266 B
Perm. con-rod play	mm	0.019 - 0.071

Crank Drive, Cylinder Block

Illustration

Technical Data - Crank Drive, Cylinder Block

Index-identification of cylinder bore
Cylinder Bore
Double bevelled ring with spiral-type expander
Tapered compression ring or double trapezoidal ring
Rectangular compression ring
Piston diameter

Crank Drive, Cylinder Block

Engine		12 NZ, C 12 NZ, X 12 SZ	C 14 NZ, C 14 SE, X 14 SZ
� Cylinder Bore
	Standard size
		Index	8		mm	71.975 - 71.985	77.575 - 77.585
		Index	99		mm	71.985 - 71.995	77.585 - 77.595
		Index	00		mm	71.995 - 72.005	77.595 - 77.605
		Index	01		mm	72.005 - 72.015	77.605 - 77.615
		Index	02		mm	72.015 - 72.025	77.615 - 77.625
	Oversize
		Index 7 + 0.5	mm	72.465 - 72.475	78.065 - 78.075
� Piston
	Standard size
		Index	8		mm	71.955 - 71.965	77.555 - 77.565
		Index	99		mm	71.965 - 71.975	77.565 - 77.575
		Index	00		mm	71.975 - 71.985	77.575 - 77.585
		Index	01		mm	71.985 - 71.995	77.585 - 77.595
		Index	02		mm	71.995 - 72.008	77.595 - 77.608
	Oversize
		Index 7 + 0.5	mm	72.442 - 72.458	78.042 - 78.058
Piston clearance	mm	0.01 - 0.03
Piston projection	mm	0

Crank Drive, Cylinder Block

Engine		12 NZ, C 12 NZ, X 12 SZ, C 14 NZ, C 14 SE, X 14 SZ
Piston Rings
	Rectangular compression ring
	Height	mm	1.50
	Gap	mm	0.30 - 0.50
	Vertical play	mm	0.02 - 0.04
	Tapered compression ring
	Height	mm	1.50
	Gap	mm	0.30 - 0.50
	Vertical play	mm	0.04 - 0.06
	Oil scraper ring
	Height	mm	3.0
	Gap	mm	0.40 - 1.40
	Vertical play	mm	0.01 - 0.03
Ring gap offset	�	120

Crank Drive, Cylinder Block

Engine		12 NZ, C 12 NZ, X 12 SZ	C 14 NZ, C 14 SE, X 14 SZ
Piston Pins
	Length	mm	50	55
	Diameter	mm	17.997 - 18.000
	Bearing		shrink-fit in con-rod
	Play
		in piston	mm	0.007 - 0.010
		in con-rod	mm	0