Toyota 4A-FE Repair Manual page 221

SERVICE SPECIFICATIONS - Engine Mechanical (4A-FE) A-3
Specifications (Cont'd)
I
Compression at 250 rpm STD 13.5 kg/cm
2
191 psi 1,320 kPa
pressure
Limit 10.0 kg/cm
2
142 psi 981 kPa
Differential of pressure between each 1 .0 kg/cm 2 (14 psi. 98 kPa) or less
cylinder
--
Idler pulley Free length 38.4 mm 1.51 2 in.
tension spring
Installed tension at 50 .2 mm (1 .976 in.) 3.6 - 4.0 kg 7.9 - 8 .8 lb 35 - 39 N
Cylinder head Head surf ace warpage
Limit
0 .05 mm 0.0020 in.
Manifold surface warpage Limit 0 .10 mm 0.0039 in .
Cylinder head thickness 95.3 mm 3.75 in.
Valve seat Refacing angle
30°, 45°, 60°
Contacting angle 45°
Contacting width 1.2 - 1.6 mm 0.04 7 - 0 .063 in.
Spark plug tube protrusion height
46.8 - 47.6 mm
1.843 - 1.874 in.
Valve guide Inside diameter 6.01 - 6.03 mm 0.2366 - 0.2374 in .
bushing
Outside diameter
STD
11.000 - 11.027 mm 0.4331 - 0.4341 in.
O/S 0.05
11 .050 - 11.077 mm 0.4350 - 0.4361 in.
Protrusion height 12.7 - 13.1 mm 0.500 - 0.51 6 in.
Replacing temperature {cylinder head side) 80 - , 00°C 176 - 212°F
Valve Valve overall length STD Intake 91 .45 mm 3.6004 in .
Exhaust 91.90 mm 3.6181 in.
Limit Intake 90.95 mm 3 .5807 in.
Exhaust 91.40 mm 3.5984 in.
Valve face angle 45 .5°
Stem diameter Intake
5.970 - 5.985 mm 0.2350 - 0.2356 in.
Exhaust 5.965 - 5 .980 mm
0.2348 - 0.2354 in.
Stem oil clearance STD Intake 0.02 5 - 0.060 mm 0.0010 - 0.0024 in.
Exhaust 0 .030 - 0.065 mm 0.001 2 - 0.0026 in.
Limit Intake 0.08 mm
0.0031 in.
Exhaust 0.10 mm 0 .0039 in.
Valve head edge thickness
Limit
1.0 mm 0.039 in.
Valve spring Free length
43 .8 mm 1.724 in.
Installed length 34.7 mm 1.366 in.
Installed load
STD
15.8 kg 34.8 lb 155 N
Limit 14.6 kg 32.3 lb 143 N
Squareness Limit 2 .0 mm 0 .075 in.
Valve lifter Outer diameter STD 27.975 - 27.985 mm 1.1014 - 1.101 8 in.
Inner diameter
(Cylinder head lifter bore} STD 28.005 - 28.026 mm 1.1025 - 1.1033in.
Oil clearance
STD
0 .020 - 0.051 mm 0.0008 - 0.0020 in.
Limit 0.10 mm
0.0039 in.
Manifold
Manifold surface warpage
Limit Intake 0.20 mm 0.0079 in.
Exhaust
0 .30 mm 0.0118 in.