1986 TOYOTA SUPRA height

(d) Using SST and a hammer, tap in a new guide bushing to the
specified protrusion height.
SST 09201±10000 (09201±01060), 09608±30022
(09608±05010)
Protrusion height:
Intake
12.3±12.7 mm (0.484±0.500 in.)
Exhaust
11.4±11.8 mm (0.449±0.465 in.)
HINT: Different bushings are used for the intake and exhaust.
(e) Using a sharp 6 mm reamer, ream the guide bushing to obtain
the standard specified clearance (See step 6) between the
guide bushing and valve stem.
7. INSPECT AND GRIND VALVES
(a) Grind the valve enough to remove pits and carbon.
(b) Check that the valve is ground to the correct valve face angle.
Valve face angle:
44.55
(c) Check the valve head margin thickness.
Standard margin thickness:
0.8±1.2 mm (0.031±0.047 in.)
Minimum margin thickness:
0.5 mm (0.020 in.)
If the margin thickness is less than minimum, replace the
valve. EG±54
± ENGINEENGINE MECHANICAL

10. INSPECT CAMSHAFTS AND BEARINGS
A. Inspect camshaft for runout
(a) Place the camshaft on V±blocks.
(b) Using a dial indicator, measure the circle runout at the center
journal.
Maximum circle runout:
0.08 mm ª(0.0031 in.)
If the circle runout is greater than maximum, replace the cam-
shaft.
B. Inspect cam lobes
Using a micrometer, measure the cam lobe height.
Standard cam lobe height:
Intake
44.570±44.670 mm (1.7547±1.7587 in.)
Exhaust
44.770±44.870 mm (1.7626±1.7665 in.)
Maximum cam lobe height:
Intake
44.42 mm (1.7488 in.)
Exhaust
44.62 mm (1.7567 in.)
If the cam lobe height is less than minimum, replace the cam-
shaft.
C. Inspect camshaft journals
Using a micrometer, measure the journal diameter.
Journal diameter:
28.949±28.965 mm (1.1397±1.1404 in.)
If the journal diameter is not as specified, check the oil clear-
ance.
D. Inspect camshaft bearings
Check the bearings for flaking and scoring.
If the bearings are damaged, replace the bearing caps and
cylinder head as a set.
E. Inspect camshaft journal oil clearance
(a) Clean the bearing caps and camshaft journals.
(b) Place the camshafts on the cylinder head.
(c) Lay a strip of Plastigage across each of the camshaft
journals.
± ENGINEENGINE MECHANICALEG±57

 
 
 
Valve guide
Bushing 
 
 
Inside diameter
Outside diameter (for repair part) STD
O/S 0.05 
 
 
6.010±6.030 mm (0.2366±0.2374 in.)
11.033±11.044 mm (0.4344±0.4348 in.)
11.083±11.094 mm (0.4363±0.4368 in.)
 
 
 
 
 
 
 
 
 
 
 
Valve 
 
 
 
 
 
 
 
 
 
 
Valve overall length STD Intake
Exhaust
Minimum Intake
Exhaust
Valve face angle
Stem diameter Intake
Exhaust
Stem oil clearance STD Intake
Exhaust
Maximum Intake
Exhaust
Margin thickness STD
Minimum 
 
 
 
 
 
 
 
 
 
 
98.29±98.79 mm (3.8697±3.8894 in.)
98.84±99.34 mm (3.8913±3.9110 in.)
98.19 mm (3.8657 in.)
98.74 mm (3.8874 in.)
44.55
5.970±5.985 mm (0.2350±0.2356 in.)
5.965±5.980 mm (0.2348±0.2354 in.)
0.025±0.060 mm (0.0010±0.0024 in.)
0.030±0.065 mm (0.0012±0.0026 in.)
0.08 mm (0.0031 in.)
0.10 mm (0.0039 in.)
0.8±1.2 mm (0.031±0.047 in.)
0.5 mm (0.020 in.)
 
 
 
 
Valve spring
 
 
 
 
Deviation Maximum
Free length Blue painted mark
Yellow painted mark
Installed tension at 34.5 mm (1.358 in.)
 
 
 
 
2.0 mm (0.079 in.)
41.74 mm (1.6433 in.)
41.70 mm (1.6417 in.)
186±206 N (19.0±21.0 kgf, 42±46 lbf)
 
 
 
 
Valve lifter 
 
 
 
Lifter diameter
Lifter bore diameter
Oil clearance STD
Maximum 
 
 
 
30.966±30.976 mm (1.2191±1.2195 in.)
31.000±31.016 mm (1.2205±1.2211 in.)
0.024±0.050 mm (0.0009±0.0020 in.)
0.07 mm (0.0028 in.)
 
 
 
 
 
 
 
 
 
Camshaft 
 
 
 
 
 
 
 
 
Thrust clearance STD
Maximum
Cam lobe height STD Intake
Exhaust
Maximum Intake
Exhaust
Journal diameter
Journal oil clearance STD
Maximum
Circle runout Maximum 
 
 
 
 
 
 
 
 
0.080±0.190 mm (0.0031±0.0075 in.)
0.30 mm (0.0118 in.)
44.570±44.670 mm (1.7547±1.7587 in.)
44.770±44.870 mm (1.7626±1.7665 in.)
44.42 mm (1.7488 in.)
44.62 mm (1.7567 in.)
28.949±28.965 mm (1.1397±1.1404 in.)
0.035±0.072 mm (0.0014±0.0028 in.)
0.10 mm (0.0039 in.)
0.08 mm (0.0031 in.)
 
 Air intake
chamber 
 Warpage Maximum 
 0.15 mm (0.0059 in.)
 
 
 
Manifold 
 
 
Warpage Maximum Intake
Exhaust 2JZ±GE
2JZ±GTE 
 
 
0.15 mm (0.0059 in.)
0.50 mm (0.0196 in.)
0.80 mm (0.0315 in.)
 
 
 
 
 
Cylinder block 
 
 
 
 
Cylinder head surface warpage Maximum
Cylinder bore diameter STD
Maximum
Main bearing bolt diameter STD
Minimum 
 
 
 
 
0.07 mm (0.0028 in.)
86.000±86.013 mm (3.3858±3.3863 in.)
86.02 mm (3.3866 in.)
9.96±9.97 mm (0.3921±0.3925 in.)
9.7 mm (0.382 in.)
 
 
 
 
Connecting
Rod 
 
 
 
Thrust clearance STD
Maximum
Connecting bolt diameter STD
Minimum 
 
 
 
0.250±0.402 mm (0.0098±0.0158 in.)
0.50 mm (0.0197 in.)
8.1±8.3 mm (0.319±0.327 in.)
8.0 mm (0.315 in.)
EG±136± ENGINEENGINE MECHANICAL

(b) Check the lock plate height (H) after completing the caulking.
Plate height:
2JZ±GE
7.40±7.80 mm (0.2959±0.3119 in)
2JZ±GTE
7.76±8.24 mm (0.3055±0.3244 in.)
If not within the specified height, adjust the stopper bolt of the
handle again and caulk again.
6. INSPECT FOR WATER LEAKS
(a) Tighten the drain plug.
(b) Plug the inlet and outlet pipes of the radiator with SST.
SST 09230±01010
(c) Using a radiator cap tester, apply pressure to the radiator.
Test pressure:
177 kPa (1.8 kgf/cm
2, 26 psi)
(d) Inspect for water leaks.
HINT: On radiators with resin tanks, there is a clearance be-
tween the tank and lock plate where a minute amount of air
will remain, giving the appearance of an air leak when the ra-
diator is submerged in water. Therefore, before doing the wa-
ter leak test, move the radiator around in the water until all air
bubbles disappear.
7. PAINT LOCK PLATES
HINT: If the water leak test checks out okay, allow the radiator
to completely dry and then paint the lock plates.
8. INSTALL CUSHIONS TO RADIATOR EG±352
± ENGINECOOLING SYSTEM