Subaru 2004 Automobile User Manual


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