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1.7 SERVICING SPECIFICATIONS
1.7.1 Engine Body
Item
Factory Specification Allowable Limit
Cylinder Head Surface Flatness -- 0.05 mm/500mm
0.0020 in./
19.69 in.
Compression Pressure
Difference Among Cylinders
2.95 to 3.23 MPa/
290 rpm
30 to 33 kgf/cm
2
290 rpm
427 to 469 psi/
290 rpm
--
2.35 MPa/
290 rpm
24kgf/cm
2
290 rpm
341 psi/
290 rpm
10% or less
To p Clearance 0.60 to 0.70 mm
0.0236 to 0.0276 in.
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Valve Clearance (When Cold) 0.18 to 0.22 mm
0.0071 to 0.0086 in.
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Valve Seat Width (Intake)
Width (Exhaust)
2.12 mm
0.0835 in.
2.12 mm
0.0835 in.
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Valve Seat Angle
(Intake / Exhaust)
0.79 rad.
45°
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Valve Face Angle
(Intake / Exhaust)
0.79 rad.
45°
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ValveStemtoValveGuide
Valve Stem
Valve Guide
Clearance
O.D.
I.D.
0.040 to 0.070 mm
0.0016 to 0.0027 in.
7.960 to 7.975 mm
0.3134 to 0.3139 in.
8.015 to 8.030 mm
0.3156 to 0.3161 in.
0.1 mm
0.0039 in.
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Valve Recessing Protrusion
Recessing
0.65 mm
0.026 in.
to
0.85 mm
0.033 in.
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Valve Timing (Intake Valve) Open
Close
0.1 rad. (8°)
before T.D.C.
0.35 rad. (20°)
before T.D.C
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Valve Timing (Exhaust Valve) Open
Close
0.87 rad. (50°)
before B.D.C.
0.21 rad. (12°)
before B.D.C
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