Subaru 2002 IMPREZA Service Manual page 109

GENERAL DESCRIPTION
MECHANICAL
Protrusion of adjuster rod
NOTE:
STD: Standard I.D.: Inner Diameter O.D.: Outer Diameter OS: Oversize
US: Undersize
5.2 - 6.2 mm (0.205 - 0.244 in)
%It ten-
;ion
idjuster
Spacer O.D.
Tensioner bush I.D.
Clearance between spacer and bush
STD
Limit
3elt ten-
jioner
17.955 - 17.975 mm (0.7069
-
0.7077 in)
18.0
-
18.08 mm (0.7087
-
0.71 18 in)
0.025
-
0.125 mm (0.0010
-
0.0049 in)
0.1 75 mm (0.0069 in)
Camshaft
STD
Limit
I
STD
Side clearance of spacer
Bend limit
Cylinder
head
0.2
-
0.55 mm (0.0079
-
0.0217 in)
0.81 mm (0.031 9 in)
0.020 mm (0.0079 in)
0.01 5
-
0.070 mm (0.0006
-
0.0028 in)
Valve seat
I
STD
Valve guide
46.25
-
46.35 mm (1.821
-
1.825 in)
Valve
STD
Limit
Front
Center
rear
Exhaust
STD
Valve
spring
46.1 5
-
46.25 mm (1.81 7
-
1.821 in)
46.05 mm (1.813 in)
37.946
-
37.963 mm (1.4939 - 1.4946 in)
29.946-29.963" (1.1790-1.1796 in)
I
STD
0.037
-
0.072 mm (0.0015 - 0.0028 in)
I
Limit
Surface warpage limit
0.10 mm (0.0039 in)
0.05 mm (0.0020 in)
Thrust clearance
Surface grinding limit
Standard height
Refacing angle
STD
Intake Limit
STD
Exhaust
Limit
Contacting width
Inner diameter
Protrusion above head
. .
I
STD
Cam lobe height
0.3 mm (0.01 2 in)
127.5 mm (5.02 in)
90"
1 .O mm (0.039 in)
I .7 mm (0.067 in)
1.5 mm (0.059 in)
2.2 mm (0.087 in)
6.000
-
6.012 mm (0.2362
-
0.2367 in)
12.0
-
12.4 mm (0.472
-
0.488 in)
1.2 mm (0.047 in)
Jounal O.D.
Intake
Exhaust
Limit
STD
Limit
Head edge thickness
Oil clearance
0.8 mm (0.031 in)
1.5 mm (0.059 in)
0.8 mm (0.031 in)
I
Intake
I
46.15 mm (1.817 in)
Intake
I
Limit
5.950
-
5.965 mm (0.2343
-
0.2348 in)
STD
Limit
Stem oil clearance
Overall length
Intake
Exhaust
-
Intake
Exhaust
0.035 - 0.062 mm (0.0014
-
0.0024 in)
0.040
-
0.067 mm (0.0016
-
0.0026 in)
0.1 5 mm (0.0059 in)
104.4 mm (4.1 10 in)
104.7 mm (4.122 in)
Free length
Squareness
Tensionlspring height
44.67 mm (1.7587 in)
2.5", 2.0 mm (0.079 in)
220.7k15.7
N
(22.5k1.6 kgf, 49.6f3.5 lb)/36.0 mm (1.417 in)
510.9k25.5 N (52.1k2.6 kgf, 114.9k5.7 lb)/26.6 mm (1.0.47 in
Stem diameter
I
I
Exhaust
I
5.945
-
5.960 "(0.2341
-
0.2346 in)
ME(D0HC TURBO)-3