Subaru Impreza 2004 Service Manual page 5

MECHANICAL
Piston ring gap
Piston ring
Clearance between piston
ring and piston ring
groove
Bend or twist per 100 mm (3.94 in) in
length
Connecting
rod
Side clearance
Oil clearance
Connecting
rod bearing
Thickness at center portion
Connecting Clearance between piston pin and
rod bushing bushing
General Description
STD
Top ring
Limit
STD
Second
ring
Limit
STD
Oil ring
Limit
STD
Top ring
Limit
STD
Second
ring
Limit
Limit
STD
Limit
STD
Limit
STD
0.03 mm
(0.0012
in) US
0.05 mm
(0.0020
in) US
0.25 mm
(0.0098
in) US
STD
Limit
ME(H4DOTC)-4
0.20 — 0.25 mm (0.0079 — 0.0098 in)
1.0 mm (0.039 in)
0.40 — 0.50 mm (0.016 — 0.020 in)
1.0 mm (0.039 in)
0.20 — 0.50 mm (0.0079 — 0.020 in)
1.5 mm (0.059 in)
0.04 — 0.08 mm (0.0016 — 0.0031 in)
0.15 mm (0.0059 in)
0.030 — 0.070 mm (0.0012 — 0.0028 in)
0.15 mm (0.0059 in)
0.10 mm (0.0039 in)
0.070 — 0.330 mm (0.0028 — 0.0130 in)
0.4 mm (0.016 in)
0.020 — 0.046 mm (0.0008 — 0.0018 in)
0.05 mm (0.0020 in)
1.486 — 1.498 mm (0.0585 — 0.0590 in)
1.504 — 1.512 mm (0.0592 — 0.0595 in)
1.514 — 1.522 mm (0.0596 — 0.0599 in)
1.614 — 1.622 mm (0.0635 — 0.0639 in)
0 — 0.022 mm (0 — 0.0009 in)
0.030 mm (0.0012 in)