1D-104 Engine Mechanical: For J20 Engine
9) Install intake manifold referring to “Intake Manifold Removal and Installation: For J20 Engine”.
10) Install exhaust manifold referring to “Exhaust Manifold Removal and Installation (For J20 Engine Model): in
Section 1K”.
11) Install injectors referring to “Fuel Injector Removal and Installation: in Section 1G”.
Valves and Valve Guides Inspection
S5JB0A1426035
Valve Guide
Valve stem-to-guide clearance
Using a micrometer and bore gauge, take diameter readings on valve stems and guides to check stem-to-guide
clearance.
Be sure to take reading at more than one place along the length of each stem and guide.
If clearance exceeds limit, replace valve and valve guide.
Valve stem and valve guide specification
Valve stem end deflection
If bore gauge is not available, check end deflection of valve stem with a dial gauge instead.
Move stem end in directions (1) and (2) to measure end deflection.
If deflection exceeds its limit, replace valve stem and valve guide.
Valve stem end deflection limit
In: 0.14 mm (0.005 in.)
Ex: 0.18 mm (0.007 in.)
Item
Standard
Limit
Valve stem diameter [A]
In
5.965 – 5.980 mm (0.2348 – 0.2354 in.)
—
Ex
5.940 – 5.955 mm (0.2339 – 0.2344 in.)
—
Valve guide bore [B]
In & Ex
6.000 – 6.012 mm (0.2362 – 0.2366 in.)
—
Stem-to-guide clearance
In
0.020 – 0.047 mm (0.0008 – 0.0018 in.)
0.070 mm (0.0028 in.)
Ex
0.045 – 0.072 mm (0.0017 – 0.0028 in.)
0.090 mm (0.0035 in.)
I4RS0B140016-01
IYSQ01141096-01
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