Subaru Impreza 2002 Service Manual page 228

4) Inspect the connecting rod bearing for scar,
peeling, seizure, melting, wear, etc.
5) Measure the oil clearance on individual connect-
ing rod bearings by means of plastigauge. If any oil
clearance is not within specification, replace the
defective bearing with a new one of standard size
or undersize as necessary. (See the table below.)
Connecting rod oil clearance:
Standard
0.020 — 0.046 mm (0.0008 — 0.0018 in)
Limit
0.05 mm (0.0020 in)
Bearing size
Bearing (Thickness at cen-
ter)
1.486 — 1.498
Standard
(0.0585 — 0.0590)
0.03
1.505 — 1.509
(0.0012)
(0.0593 — 0.0594)
undersize
0.05
1.515 — 1.519
(0.0020)
(0.0596 — 0.0598)
undersize
0.25
1.615 — 1.619
(0.0098)
(0.0636 — 0.0637)
undersize
6) Inspect the bushing at connecting rod small end,
and replace if worn or damaged. Also measure the
piston pin clearance at the connecting rod small
end.
Clearance between piston pin and bushing:
Standard
0 — 0.022 mm (0 — 0.0009 in)
Limit
0.030 mm (0.0012 in)
CYLINDER BLOCK
Unit: mm (in)
Outer diameter of
crank pin
51.984 — 52.000
(2.0466 — 2.0472)
51.954 — 51.970
(2.0454 — 2.0461)
51.934 — 51.950
(2.0446 — 2.0453)
51.734 — 51.750
(2.0368 — 2.0374)
B2M0085
ME(STi)-89
7) Replacement procedure is as follows:
(1) Remove the bushing from connecting rod
with ST and press.
(2) Press the bushing with ST after applying oil
on the periphery of bushing.
ST 499037100 CONNECTING ROD BUSH-
ING REMOVER AND IN-
STALLER
(3) Make two 3 mm (0.12 in) holes in the bush-
ing. Ream the inside of bushing.
(4) After completion of reaming, clean the bush-
ing to remove chips.
MECHANICAL
B2M0084
G2M0177