Subaru XT 1988 Service Manual page 164

2-3 ENGINE
~
Outer diameter 21.380 - 21.393 mm (0.8417 - 0.8422 in)
VI
co ....
Cylinder head adjuster hole 1.0. 21.413 - 21.470 mm (0.8430 - 0.8453 in)
- CIl
CIl+'
.2!:
:s
Adjuster-to-hole clearance STD 0.020 - 0.090 mm (0.0008 - 0.0035 in)
co .-
>~
Limit 0.1 mm (0.004 in)
Surface warpage limit (mating with cylinder head) 0.05 mm (0.0020 in)
Surface grinding limit
0.4 mm (0.016 in)
Metal housing
1.0.
59.000 - 59.018 mm (2.3228 - 2.3235 in)
~
Oil seal hole 1.0. Front and center 59.000 - 59.030 mm (2.3228 - 2.3240 in)
u
0
Rear
93.000 - 93.035 mm (3.6614 - 3.6628 in)
J5
....
Cylinder bore STD 91.985 - 92.015 mm (3.6214 - 3.6226 in)
CIl
'0
c
Taper limit 0.050 mm (0.0020 in)
>-
u
Out-of roundness limit
0.050 mm
(0.0020 in)
Piston clearance STD 0.015 - 0.035 mm
(0.0006 - 0.0014 in)
Limit
0.060 mm (0.0024 in)
Enlarging (boring) lim it 0.3 mm (0.012 in)
Outer diameter
STD 91.970 - 91.980 mm (3.6209 - 3.6213 in)
c
0.25 mm (0.0098 in) OS
92.220 - 92.230 mm (3.6307 - 3.6311 in)
0
+'
VI
0.50 mm (0.0197 in)
as
92.470 - 92.480 mm (3.6405 - 3.6409 in)
c:
Standard inner diameter of piston pin hole
20.999 - 21.009 mm (0.8267 - 0.8271 in)
Outer diameter 20.994 - 21.000 mm (0.8265 - 0.8268 in)
c
a.
Standard clearance between piston pin and hole in piston 0.001 - 0.015 mm
(0.00004 - 0.00059 in)
c
Degree of fit Piston pin must be fitted into position with
0
+'
VI
thumb at 20°C (68°F). c:
Standard clearance between piston pin and hole in connecting rod 0- 0.022 mm (0 - 0.0009 in)
Width Top ring 1 .17 - 1.19 mm (0.0461 - 0.0469 in)
Second ring 1.47 -1.49 mm (0.0579 - 0.0587 in)
Oil ring Combination ring
Rad ial wall th ick ness Top ring
3.2 - 3.4 mm (0.126 - 0.134 in)
Second ring 3.6 - 3.8 mm (0.142 -0.150 in)
Oil ring Combination ring
Cl
Piston ring gap Top & Second ring
STD 0.2 - 0.35 mm
(0.0079 - 0.0138 in)
c
...
Limit 1.5 mm (0.059 in)
c
0
Oil ring STD 0.3 - 0.9 mm (0.012 - 0.035 in)
+'
VI
a:::
Limit
2.0 mm (0.079 in)
Clearance between piston ring and Top ring STD
0.040 - 0.080 mm (0.0016 - 0.0031 in)
piston ring groove
Limit 0.15 mm (0.0059 in)
Second ring STD 0.030 - 0.070 mm (0.0012 - 0.0028 in)
Limit 0.15 mm
(0.0059 in)
Oil ring STD Omm (0
in)
Limit Omm
(0 in)
STD: Standard OS: Oversize
8