Toyota Supra 1990 Manual page 81

I ntake Manifold
Exhaust Manifold
Air Intake Chamber
ENGINE MECHANICAL - Cylinder Head EM-49
EM5890
EM5895
EM2948
EM5894
EM2950
16. INSPECT CAMSHAFT THRUST CLEARANCE
(a) Clean and install the camshaft and bearing caps.
(b) Using a dial gauge, measure the thrust clearance while
moving the camshaft back and forth.
Standard thrust clearance: 0.08 - 0.19 mm
(0.0031 - 0.0075 in.)
Maximum thrust clearance: 0.30 mm (0.0118 in.)
If clearance is greater than maximum, replace the camshaft
and/or cylinder head.
17. INSPECT VALVE LIFTER OIL CLEARANCE
(a) Using a micrometer, measure the diameter of the valve
lifter.
Valve lifter diameter: 27.975 - 27.985 mm
(1.1014 - 1.1018 in.)
(b) Using a dial indicator, measure the inside diameter of
the cylinder head bore.
Lifter bore diameter: 28.000 - 28.021 mm
(1.1024 - 1.1032 in.)
(c) Subtract the valve lifter measurement from the
cylinder head bore.
Standard oil clearance: 0.015 - 0.046 mm
(0.0006 - 0.0018 in.)
Maximum oil clearance: 0.10 mm (0.0039 in.)
If clearance is greater than maximum, replace the cylinder
head and/or valve lifter.
18. INSPECT INTAKE, EXHAUST MANIFOLDS AND AIR IN-
TAKE CHAMBER
Using a precision straight edge and thickness gauge, check
the surfaces contacting the cylinder head or intake manifold
for warpage.
Maximum warpage:
Intake manifold
Exhaust manifold 7M-GE
7M-GTE
Intake chamber
0.10 mm (0.0039in.)
0.75 mm (0.0295in.)
0.50 mm (0.0197in.)
0.10 mm (0.0039in.)