ENGINE MECHANICAL — Cylinder Block
EM-47
(c)
Using a micrometer, measure the piston pin diame-
ter.
Piston pin diameter: 22.004 — 22.019 mm
(0.8663 — 0.8669 in.)
(d)
Subtract the piston pin diameter measurement from
the busing inside diameter measurement.
Standard oil clearance:
0.005 — 0.011 mm
(0.0002 — 0.0004 in.)
Maximum oil clearance: 0.03 mm (0.0012 in.)
If the oil clearance is greater than maximum, replace the
connecting rod bushing. If necessary, replace the piston
and piston pin assembly.
BORING OF CYLINDERS
HINT:
• Bore all six cylinders for the oversized piston outside
diameter.
• Replace the piston rings with ones to match the over-
sized pistons.
1.
SELECT OVERSIZED PISTONS
Oversized piston diameter:
0/5
0.50
94.463 —
94.493 m m
(3.7190
— 3.7202 in.)
O / S
1.00
94.963 —
94.993 m m
(3.7387
— 3.7399 in.)
O / S
1.50
95.463 —
95.493 m m
(3.7584
— 3.7596 in.)
2.
CALCULATE AMOUNT TO BORE CYLINDER
(a)
Using a micrometer, measure the piston diameter at
a right angle to the piston pin hole center line, 16
mm (0.63 in.) below the skirt bottom edge.
(b)
Calculate the amount each cylinder is to be rebored
as follows:
Size to be rebored = P + C — H
P = Piston diameter
C = Piston clearance
0.027 — 0.047 mm (0.0012 — 0.0020 in.)
H = Allowance for honing
0.02 mm (0.0008 in.) or less
3.
BORE AND HONE CYLINDERS TO CALCULATED
DIMENSIONS
Maximum honing: 0.02 mm (0.0008 in.)
NOTICE: Excess honing will destroy the finished
roundness.
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