Page 1361 of 2543
4. REMOVE DRIVE BELT
Loosen the drive belt tension by turning the drive belt tension-
er clockwise, and remove the drive belt.
5. REMOVE WATER OUTLET AND NO.1 WATER BYPASS
PIPE
(a) Disconnect the upper radiator hose from the water outlet.
(b) Disconnect the ECT sensor and sender gauge connectors.
(c) Remove the 2 bolts, water outlet and gasket.
(d) Remove the No.1 water bypass pipe and 2 O±rings.
6. DISCONNECT PS PUMP WITHOUT DISCONNECTING
HOSES
(a) Disconnect these hoses:
(1) Air hose from throttle body
(2) Air hose from air intake chamber
(b) Remove the 2 bolts, and disconnect the pump housing from
the pump bracket.
HINT: Put aside the pump housing, and suspend it securely.
7. DISCONNECT FUEL RETURN HOSE
Disconnect the fuel return hose from the fuel return pipe. Plug
the hose end.
8. REMOVE AIR INTAKE CHAMBER ASSEMBLY
(See injector removal in SFI System)
± ENGINEENGINE MECHANICALEG±47
Page 1362 of 2543

9. DISCONNECT ENGINE WIRE
(a) Disconnect these connectors and clamps:
(1) 6 injectors connectors
(2) 2 camshaft position sensor connectors
(3) 3 engine wire clamps from injector holders
(4) VSV connector for EVAP
(b) Remove the 2 bolts, and disconnect the 2 ground straps from
the intake manifold.
(c) Remove the nut, and disconnect the engine wire protector
from the intake manifold.
10. REMOVE STARTER
(See starter removal in Starting System)
11. REMOVE PRESSURE TANK AND VSV ASSEMBLY
(a) Disconnect the 2 vacuum hoses from the pressure tank.
(b) Remove the 2 nuts and pressure tank and VSV assembly.
12. REMOVE FUEL PRESSURE PULSATION DAMPER
(See step 2 in fuel pressure pulsation damper in SFI Sys-
tem)
13. REMOVE FUEL INLET PIPE
Remove the union bolt, 2 gaskets, clamp bolt and fuel inlet
pipe.
14. RE MO V E INTAKE MANIFO LD AND DE LIV E RY PIP E
ASSEMBLY
Remove the 4 bolts, 2 nuts, engine wire bracket, the intake
manifold, delivery pipe assembly and gasket. EG±48
± ENGINEENGINE MECHANICAL
Page 1363 of 2543

15. REMOVE TIMING BELT FROM CAMSHAFT TIMING
PULLEYS
(See steps 5 to 8 in timing belt removal)
NOTICE:
wSupport the timing belt, so that the meshing of the crank-
shaft timing pulley and timing belt does not shift.
wBe careful not to drop anything inside the timing belt cov-
er.
wDo not allow the timing belt to come into contact with oil,
water or dust.
16. REMOVE IGNITION COILS ASSEMBLIES
(See steps 2 to 5 in ignition coils removal in Ignition Sys-
tem)
17. REMOVE SPARK PLUGS
18. REMOVE NO.1 AND NO.2 CYLINDER HEAD COVERS
(a) Remove the 2 bolts, cruise control actuator cable bracket and
IAC valve pipe clamp.
(b) Remove the PCV valve.
(c) Remove the 6 bolts, 2 nuts, 8 seal washers and No.1 cylinder
head cover and gasket.
(d) Remove the 6 bolts, 2 nuts, 8 seal washers and No.2 cylinder
head cover and gasket.
19. REMOVE CAMSHAFT TIMING PULLEYS
(See step 34 cylinder head removal (2JZ±GE))
20. REMOVE NO.4 TIMING BELT COVER
(See step 35 cylinder head removal (2JZ±GE))
21. REMOVE CAMSHAFTS
(See step 36 cylinder head removal (2JZ±GE))
22. REMOVE CYLINDER HEAD
(See step 37 cylinder head removal (2JZ±GE))
CYLINDER HEAD DISASSEMBLY
1. 2JZ±GE:
REMOVE ENGINE HANGERS
2. 2JZ±GE:
REMOVE ECT SENSOR AND SENDER GAUGE
3. 2JZ±GE:
REMOVE THROTTLE CABLE BRACKET AND GROUND
STRAP
± ENGINEENGINE MECHANICALEG±49
Page 1364 of 2543
4. 2JZ±GTE:
REMOVE ENGINE HANGERS AND GROUND STRAP
5. 2JZ±GTE:
REMOVE CAMSHAFT POSITION SENSORS
6. REMOVE EGR COOLER
7. REMOVE VALVE LIFTERS AND SHIMS
HINT: Store the valve lifters and shims in correct order.
8. REMOVE VALVES
(a) Using SST, compress the valve spring and remove the 2
keepers.
SST 09202±70010
(b) Remove the spring retainer, valve spring, valve and spring
seat.
HINT: Store the valves, valve springs, spring seats and spring
retainers in correct order.
(c) Using needle±nose pliers, remove the oil seal.
CYLINDER HEAD COMPONENTS
INSPECTION AND REPAIR
1. CLEAN TOP SURFACES OF PISTONS AND CYLINDER
BLOCK
(a) Turn the crankshaft, and bring each piston to top dead center
(TDC). Using a gasket scraper, remove all the carbon from
the piston top surface. EG±50
± ENGINEENGINE MECHANICAL
Page 1365 of 2543
(b) Using a gasket scraper, remove all the gasket material from
the top surface of the cylinder block.
(c) Using compressed air, blow carbon and oil from the bolt
holes.
CAUTION: Protect your eyes when using high pressure com-
pressed air.
2. CLEAN CYLINDER HEAD
A. Remove gasket material
Using a gasket scraper, remove all the gasket material from
the cylinder block surface.
NOTICE: Be careful not to scratch the cylinder block contact
surface.
B. Clean combustion chambers
Using a wire brush, remove all the carbon from the combus-
tion chambers.
NOTICE: Be careful not to scratch the cylinder block contact
surface.
C. Clean valve guide bushings
Using a valve guide bushing brush and solvent, clean all the
guide bushings.
D. Clean cylinder head
Using a soft brush and solvent, thoroughly clean the cylinder
head.
± ENGINEENGINE MECHANICALEG±51
Page 1366 of 2543
3. INSPECT CYLINDER HEAD
A. Inspect for flatness
Using precision straight edge and feeler gauge, measure the
surfaces contacting the cylinder block, intake and exhaust
manifolds for warpage.
Maximum warpage:
0.10 mm (0.0039 in.)
If warpage is greater than maximum, replace the cylinder
head.
B. Inspect for cracks
Using a dye penetrant, check the combustion chamber, in-
take ports, exhaust ports and cylinder block surface for
cracks.
If cracked, replace the cylinder head.
4. CLEAN VALVES
(a) Using a gasket scraper, chip off any carbon from the valve
head.
(b) Using a wire brush, throughly clean the valve.
5. INSPECT VALVE STEMS AND GUIDE BUSHINGS
(a) Using a caliper gauge, measure the inside diameter of the
guide bushing.
Bushing inside diameter:
6.010±6.030 mm (0.2366±0.2374 in.)
EG±52± ENGINEENGINE MECHANICAL
Page 1367 of 2543

Bushing bore diameter
mm (in.)
10.985±11.006 mm
(0.4325±0.4333 in.)Both intake and exhaust
11.035±11.056 mm
(0.4344±0.4353 in.)Bushing
size
Use STD
Use O/S
0.05
(b) Using a micrometer, measure the diameter of the valve stem.
Valve stem diameter:
Intake
5.970±5.985 mm (0.2350±0.2356 in.)
Exhaust
5.965±5.980 mm (0.2348±0.2354 in.)
(c) Subtract the valve stem diameter measurement from the
guide bushing inside diameter measurement.
Standard oil clearance:
Intake
.025±0.060 mm (0.0010±0.0024 in.)
Exhaust
.030±0.065 mm (0.0012±0.0026 in.)
Maximum oil clearance:
Intake
.08 mm (0.0031 in.)
Exhaust
.10 mm (0.0039 in.)
If the clearance is greater than maximum, replace the valve
and guide bushing.
6. IF NECESSARY, REPLACE VALVE GUIDE BUSHINGS
(a) Using SST and a hammer, tap out the guide bushing.
SST 09201±10000 (09201±01060).
09608±30022 (09608±05010)
(b) Using a caliper gauge, measure the bushing bore diameter
of the cylinder head.
(c) Select a new guide bushing (STD or O/S 0.05).
If the bushing bore diameter of the cylinder head is greater
than 11.006 mm (0.4333 in.), machine the bushing bore to
the following dimension:
11.035±11.056 mm (0.4344±0.4353 in.)
If the bushing bore diameter of the cylinder head is greater
than 11.056 mm (0.4353 in.), replace the cylinder head.
± ENGINEENGINE MECHANICALEG±53
Page 1368 of 2543
(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