Vauxhall Workshop Service and Repair Manuals

Crank Drive, Cylinder Block  

Table of illustrations  

 

1  Main bearing journals   2  Ø Con-rod bearing journal   3  Main bearing journals 3 (Guide bearing)   4  Crankshaft colour coding   5  Crankshaft colour coding   6  Coding of bearing bush

Crank Drive, Cylinder Block (continued)  

Engine						C 18 SEL, C 18 XE, C 18 XEL, X 18 XE, C 20 XE, X 20 XEV
Crankshaft dimensions						Ø Main bearing journals 1- 5	colour coding
		Standard size			mm	57.974 - 57.981	white
					mm	57.981 - 57.988	green
					mm	57.988 - 57.995	brown
		Undersize (0.25)			mm	57.732 - 57.738	green/ blue
					mm	57.738 - 57.745	brown / blue
		Undersize (0.50)			mm	57.482 - 57.488	green / white
					mm	57.488 - 57.495	brown white
						Ø con rod bearing journals 1-4
		standard size			mm	48.970 - 48.988	-
		Undersize (0.25)			mm	48.720 - 48.738	blue
		Undersize (0.50)			mm	48.470 - 48.488	white
						Width of main bearing journal 3
						(Guide bearing)
		Standard size			mm	25.950 - 26.002	-
		Undersize (0.20)			mm	26.150 - 26.202	-
		Undersize (0.40)			mm	26.350 - 26.402	-

Crank Drive, Cylinder Block (continued)  

Engine					C 18 SEL, C 18 XE, C 18 XEL, X 18 XE, C 20 XE, X 20 XEV
Crankshaft bearing					lower crankshaft bearing bush
1, 2, 4, 5					colour coding	Thickness	GM 985 labelling
	Standard size			mm	brown	1.989 - 1.995	662 N
				mm	green	1.995 - 2.001	663 N
				mm	white	2.001 - 2.007	528 N
	Undersize (0.25)			mm	brown / blue	2.114 - 2.120	664 A
				mm	green/blue	2.120 - 2.126	665 A
	Undersize (0.50)			mm	brown white	2.239 - 2.245	666 B
				mm	green/white	2.245 - 2.251	667 B
					Upper crankshaft bearing bush
	standard size			mm	brown	1.989 - 1.995	662 N
				mm	green	1.995 - 2.001	663 N
				mm	white	2.001 - 2.007	528 N
	Undersize (0.25)			mm	brown/blue	2.114 - 2.120	664 A
				mm	green/blue	2.120 - 2.126	665 A
	Undersize (0.50)			mm	brown white	2.239 - 2.245	666 B
				mm	green/white	2.245 - 2.251	667 B
Permissible crankshaft bearing play				mm		0.015 - 0.043

Crank Drive, Cylinder Block (continued)  

Engine					C 18 SEL, C 18 XE, C 18 XEL, X 18 XE, C 20 XE, X 20 XEV
Crankshaft bearing 3					Lower crankshaft bearing bush
(Guide bearing)					colour coding	Thickness	GM 985 coding
	Standard size			mm	brown	1.989 - 1.995	655 N
				mm	green	1.995 - 2.001	656 N
				mm	white	2.001 - 2.007	126 N
	Undersize (0.25)			mm	brown/blue	2.114 - 2.120	657 A
				mm	green/blue	2.120 - 2.126	658 A
	Undersize (0.50)			mm	brown white	2.239 - 2.245	659 B
				mm	green/white	2.245 - 2.251	660 B
					Upper crankshaft bearing bush
	standard size			mm	brown	1.989 - 1.995	655 N
				mm	green	1.995 - 2.001	656 N
				mm	white	2.001 - 2.007	126 N
	Undersize (0.25)			mm	brown/blue	2.114 - 2.120	657 A
				mm	green/blue	2.120 - 2.126	658 A
	Undersize (0.50)			mm	brown white	2.239 - 2.245	659 B
				mm	green/white	2.245 - 2.251	660 B

Crank Drive, Cylinder Block (continued)  

Engine					C 18 SEL, C 18 XE, C 18 XEL, X 18 XE, C 20 XE, X 20 XEV
Width of crankshaft bearing 3 (guide bearing)					colour coding	Thickness	Identification
	Standard size			mm	brown/blue	25.850 - 25.900	-
					- white
	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 (continued)  

Engine			C 18 SEL, C 18 XE, C 18 XEL, X 18 XE, C 20 XE, X 20 XEV
Con rod bearing			Lower con rod bearing bush
			colour coding	Thickness	Identification
					GM 124
	Standard size	mm	-	1.490 - 1.500	623 N
	Undersize (0.25)	mm	blue	1.615 - 1.625	624 A
	Undersize (0.50)	mm	white	1.740 - 1.750	625 B
			Upper con rod bearing bush
	Standard size	mm	-	1.490 - 1.500	623 N
	Undersize (0.25)	mm	blue	1.615 - 1.625	624 A
	Undersize (0.50)	mm	white	1.740 - 1.750	625 B
perm. con-rod play		mm		0.006 - 0.031

Crank Drive, Cylinder Block (continued)  

Table of illustrations  

 

1  Cylinder bore index value coding   2  Cylinder bore   3  Double-bevelled ring with spiral-type expander   4  Taper face compression ring or full keystone ring   5  rectangular compression ring   6  Piston diameter

Crank Drive, Cylinder Block (continued)  

Engine				C 18 SEL, C 18 XE, C 18 XEL, X 18 XE	C 20 XE, X 20 XEV
Ø Cylinder bore
	Standard size
		Index value 8	mm	81.575 - 81.585	85.975 - 85.985
		Index value 99	mm	81.585 - 81.595	85.985 - 85.995
		Index value 00	mm	81.595 - 81.605	85.995 - 86.005
		Index value 01	mm	81.605 - 81.615	86.005 - 86.015
		Index value 02	mm	81.615 - 81.625	86.015 - 86.025
	oversize 1)
		Index value 7 + 0.5	mm	82.065 - 82.075	86.465 - 86.475
Ø Piston
	Standard size
		Index value 8	mm	81.555 - 81.565	85.945 - 85.995
		Index value 99	mm	81.555 - 81.575	85.955 - 85.965
		Index value 00	mm	81.575 - 81.585	85.965 - 86.975
		Index value 01	mm	81.585 - 81.595	86.975 - 86.985
		Index value 02	mm	81.595 - 81.605	86.985 - 86.995
	oversize
		Index value 7 + 0.5	mm	82.045 - 82.005	86.435 - 86.445
Piston clearance			mm	0.01 - 0.03	0.02 - 0.04
Piston projection			mm	0.04

1)  After reboring the old index value becomes invalid and should be replaced by the new oversize index value.  

Crank Drive, Cylinder Block (continued)  

Engine				C 18 SEL, C18 XE, C18 XEL, X 18 XE, C 20 XE, X 20 XEV
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	0.02 - 0.04
	oil scraper ring
		Height	mm	3.00
		Gap	mm	0.4 - 1.4
		vertical play	mm	0.01 - 0.03
	ring gap distribution 1)		°	180

1)  Arrange gap of upper oil scraper ring 25 to 50 mm offset to the left and gap of the lower ring 25 to 50 mm offset to the right relative to the gap of the lower intermediate ring.  

Crank Drive. Cylinder Block (continued)  

Engine				C 18 SEL, C 18 XE,C 18 XEL, X 18 XE, X 20 XEV	C 20 XE
piston pin
	Length		mm	61.2 - 61.8
	diameter		mm	20.990 - 21.000
	Bracket			in con rod	floating in
				shrunken (sic)	Con rod
	Play
		in piston	mm	0.011 - 0.014
		in con rod	mm	0.0	0.014 - 0.025