1986 TOYOTA SUPRA engine oil

PRECAUTION
1. Do not stop the engine immediately after pulling a trailer
or after high speed or uphill driving. Idle the engine for
20±120 seconds, depending on how hard the vehicle has
been driven.
2. Avoid sudden acceleration or racing immediately after
starting a cold engine.
3. Do not run the engine with air cleaner removed, as this
may cause foreign material to enter and damage the
impeller wheel operating at high speed.
4. If a turbocharger is found to be defective and must be
replaced, check for the cause, and repair or replace the
following items as necessary:
wEngine oil level and quality
wConditions under which the turbocharger was used
wOil lines leading to the turbocharger
5. Use caution when removing and reinstalling the
turbocharger assembly. Do not drop it or knock it against
anything or grasp it by easily±deformed parts, such as
the actuator or rod, when moving it.
6. Use caution when removing and reinstalling the exhaust
gas control valve assembly. Do not drop it or knock it
against anything or grasp it by easily±deformed parts,
such as the actuator or rod, when moving it. The control
valve is ceramic.
7. Before removing the turbocharger, plug the intake and
exhaust ports and oil inlet to prevent entry of dirt or other
foreign material.
8. If replacing the turbocharger, check for accumulation of
sludge particles in the oil pipes, and if necessary,
replace the oil pipes.
9. Completely remove the gasket adhered to the lubrication
oil pipe flange and turbocharger oil flange.
10. Whe n re pla c ing bolt or nuts , us e only authorize d
replacement parts to prevent breakage or deformation.
11. If replacing the turbocharger, pour approx. 20 cm
3 (1.2 cu
in.) of fresh oil into the turbocharger oil inlet and turn the
impeller wheel by hand to spread oil to the bearing.
12. If overhauling or replacing the engine, cut the fuel supply
after reassembly and crank the engine for 30 seconds to
distribute oil throughout the engine. Then allow the
engine to idle for 60 seconds.
± ENGINETURBOCHARGER SYSTEM (2JZ±GTE)EG±141

1. TURBOCHARGING HEAT INSULATOR
RESONANCE
2. EXHAUST PIPE LEAKING OR
VIBRATING
3. ERRATIC TURBOCHARGER
OPERATION
ABNORMAL NOISE
(Possible Cause) (Check Procedure and Correction Method)
Check for loose, improperly installed or deformed
insulator mounting bolts, and repair or replace as
necessary.
Check for deformed exhaust pipe, loose mounting
bolts or damaged gasket, and repair or replace as
necessary.
Refer to item 6 of INSUFFICIENT ACCELERATION,
LACK OF POWER OR EXCESSIVE FUEL
CONSUMPTION.
EXCESSIVE OIL CONSUMPTION OR WHITE EXHAUST
(Possible Cause) (Check Procedure and Correction Method)
FAULTY TURBOCHARGER SEALCheck for oil leakage in exhaust system.
wRemove the turbine elbow from the turbochar-
ger and check for excessive carbon deposits on
the turbine wheel. Excessive carbon deposits in-
dicate a faulty turbocharger.
Check for oil leakage in intake air system.
wCheck for axial and radial play of turbine shaft
and replace the turbocharger if necessary.
(See page EG±158)
Maximum axial play : 0.110 mm (0.0045 in.)
Maximum radial play : 0.162 mm (0.0064 in.)
NOTICE: Some oil mist in the blowby from the
PCV is normal.
Do not mistake it for an oil leak from the
turbocharger.
± ENGINETURBOCHARGER SYSTEM (2JZ±GTE)EG±143

7. DISCONNECT THEFT DETERRENT HORN FROM BODY
8. REMOVE FRONT LOWER ARM BRACKET STAY
Remove the 2 bolts, nut, plate washer and arm bracket stay.
Torque:
Bolts
44 NVm (450 kgfVcm, 33 ftVlbf)
Nut
59 NVm (600 kgfVcm, 43 ftVlbf)
9. REMOVE UPPER FRONT CROSSMEMBER EXTENSION
Remove the 2 bolts, 2 nuts and crossmember extension.
Torque:
Bolts
29 NVm (300 kgfVcm, 22 ftVlbf)
Nuts
33 NVm (340 kgfVcm, 25 ftVlbf)
10. REMOVE NO.2 FRONT EXHAUST PIPE
(a) Remove the 2 bolts and nuts holding the front exhaust pipe
to the No.2 front exhaust pipe.
Torque: 58 NVm (590 kgfVcm, 43 ftVlbf)
(b) Remove the 2 bolts and pipe support bracket.
Torque: 43 NVm (440 kgfVcm, 32 ftVlbf)
(c) Disconnect the front exhaust pipe from the No.2 exhaust
pipe. Remove the gasket.
INSTALLATION HINT: Use a new gasket.
(d) Remove the 3 nuts, No.2 front exhaust pipe and gasket.
INSTALLATION HINT: Use a new gasket and 3 new nuts.
Torque: 62 NVm (630 kgfVcm, 46 ftVlbf)
11. REMOVE HEAT INSULATOR FOR NO.2 FRONT EXHAUST
PIPE
Remove the 2 bolts, 2 nuts and heat insulator.
12. DISCONNECT A/T OIL COOLER TUBES FROM ENGINE
(a) Remove the bolt and tube clamp, and disconnect the oil
cooler tubes from the bracket (front side) on the generator.
(b) Remove the bolt and tube clamp, and disconnect the oil
cooler tubes from the bracket (rear side) on the cylinder
block.
(c) Remove the bolt and tube bracket (rear side) from the
cylinder block.
± ENGINETURBOCHARGER SYSTEM (2JZ±GTE)EG±151

23. REMOVE MAIN HEATED OXYGEN SENSOR
(a) Disconnect the oxygen sensor connector.
(b) Remove the 2 nuts, oxygen sensor and gasket.
INSTALLATION HINT: Use a new gasket and 2 new nuts.
Torque: 20 NVm (200 kgfVcm, 14 ftVlbf)
24. REMOVE EXHAUST GAS CONTROL VALVE
Remove the 3 nuts, control valve and 2 gaskets.
NOTICE: The control valve is ceramic. Do not drop or knock
the control valve.
INSTALLATION HINT: Use 2 new gaskets and 3 new nuts.
Torque: 69 NVm (700 kgfVcm, 51 ftVlbf)
25. REMOVE NO.1 TURBOCHARGER STAY
Remove the bolt, nut and turbocharger stay.
Torque: 43 NVm (440 kgfVcm, 32 ftVlbf)
26. REMOVE NO.2 TURBOCHARGER STAY
Remove the bolt, nut and turbocharger stay.
INSTALLATION HINT: Install the turbocharger stay and No.1
turbo oil pipe clamp with the bolt and nut.
Torque: 43 NVm (440 kgfVcm, 32 ftVlbf)
27. REMOVE NO.1 TURBO OIL PIPE
(a) Remove the union bolt holding the turbo oil pipe to the
cylinder block. Remove the 2 gaskets.
INSTALLATION HINT: Use 2 new gaskets.
Torque: 39 NVm (400 kgfVcm, 29 ftVlbf)
(b) Remove the 2 nuts, and disconnect the turbo oil pipe from
turbocharger. Remove the gasket.
INSTALLATION HINT:
wUse a new gasket.
wAlign the oil holes of the gasket and turbocharger
housing.
Torque: 21 NVm (210 kgfVcm, 15 ftVlbf)
(c) Disconnect the turbo oil hose from the turbo oil outlet on the
No.1 oil pan, and remove the turbo oil pipe.
28. REMOVE NO.2 TURBO OIL PIPE
(a) Remove the union bolt holding the turbo oil pipe to the
cylinder block. Remove the 2 gaskets.
INSTALLATION HINT: Use 2 new gaskets.
Torque: 39 NVm (400 kgfVcm, 29 ftVlbf)
± ENGINETURBOCHARGER SYSTEM (2JZ±GTE)EG±155

(b) Remove the 2 nuts, and disconnect the turbo oil pipe from
turbocharger. Remove the gasket.
INSTALLATION HINT:
wUse a new gasket.
wAlign the oil holes of the gasket and turbocharger
housing.
Torque: 21 NVm (210 kgfVcm, 15 ftVlbf)
(c) Disconnect the turbo oil hose from the turbo oil outlet on the
No.1 oil pan, and remove the turbo oil pipe.
29. REMOVE TURBOCHARGERS AND TURBINE OUTLET
ELBOW ASSEMBLY
(a) Disconnect these hoses:
(1) Heater hose (from No.3 water bypass pipe) from No.2
water bypass pipe
(2) Water bypass hose (from No.2 turbo water pipe) from
No.2 water bypass pipe
(b) Remove the 8 nuts holding the turbochargers to the exhaust
manifold.
INSTALLATION HINT:
wUse 8 new nuts.
wUniformly tighten the nuts in several passes.
Torque: 54 NVm (550 kgfVcm, 40 ftVlbf)
(c) Remove the 2 turbochargers and turbine outlet elbow
assembly.
(d) Remove the 2 gaskets.
INSTALLATION HINT: Use 2 new gaskets.
30. R E M O V E N O . 1 VACUUM PIPE FROM NO.2
TURBOCHARGER
Disconnect the 2 air hoses from the actuator for the exhaust
bypass valve, and remove the vacuum pipe.
31. REMOVE NO.2 AIR TUBE AND NO.3 WATER BYPASS
PIPE ASSEMBLY FROM NO.2 TURBOCHARGER
Remove the 2 bolts, the air tube, bypass pipe assembly and
gasket.
INSTALLATION HINT: Use a new gasket.
Torque: 21 NVm (210 kgfVcm, 15 ftVlbf)
EG±156± ENGINETURBOCHARGER SYSTEM (2JZ±GTE)

TURBOCHARGER COMPONENTS
INSPECTION
Turbochargers
1. INSPECT TURBINE SHAFT ROTATION
Grasp the edge of the turbine wheel and turn it. Check that
the impeller wheel turns smoothly.
If the impeller wheel does not turn or if it turns with a drag, re-
place the turbocharger assembly.
2. INSPECT AXIAL PLAY OF TURBINE SHAFT
(a) Using a dial indicator, insert the needle of the dial indicator
into the air tube side.
(b) Move the turbine shaft in an axial direction, measure the axial
play of the turbine shaft.
Maximum axial play:
0.110 mm (0.0045 in.)
If the axial play is greater than maximum, replace the turbo-
charger assembly.
3. INSPECT RADIAL PLAY OF TURBINE SHAFT
(a) Using a dial indicator, insert the needle of the dial indicator
into the oil outlet hole and set it in the center of the turbine
shaft.
(b) Move the turbine shaft in a radial direction, measure the
radial play of the turbine shaft.
Maximum radial play:
0.162 mm (0.0064 in.)
If the axial play is greater than maximum, replace the turbo-
charger assembly.
4. INSPECT WASTE GATE VALVE OPERATION
(a) Disconnect the actuator air hose from the housing, and plug
the hose end.
(b) Using SST, apply approx. 120 kPa (1.22 kgf/cm
2, 17.4 psi) of
pressure to the actuator.
SST 09992±00241
(c) Move the actuator push rod, and check that the waste gate
valve is open.
If operation is not as specified, replace the No.1 turbocharger
assembly.
NOTICE: Never apply more than 187 kPa (1.91 kgf/cm2, 27.2
psi) of pressure to the actuator.
(d) Reconnect the actuator air hose to the housing. EG±158
± ENGINETURBOCHARGER SYSTEM (2JZ±GTE)

CAC REMOVAL
Installation is in the reverse order of removal.
1. REMOVE NO.1 AIR HOSE
2. REMOVE ENGINE UNDER COVER
3. w/o Auto Spoiler:
REMOVE NO.2 ENGINE UNDER COVER
4. REMOVE RH FRONT FENDER SPLASH SHIELD SEAL
5. w/ Auto Spoiler:
REMOVE RH ENGINE UNDER COVER
6. DISCONNECT AIR HOSE FROM CAC
(a) Remove the 2 bolts holding the No.2 air tube (3) to the body.
(b) Disconnect these hoses:
(1) No.2 air hose from CAC
(2) No.4 air hose from No.2 air tube
(3) No.3 air hose from CAC
(c) Remove the No.2 air tube (4).
7. REMOVE CAC AND CAC DUCT ASSEMBLY
w/o Auto Spoiler:
Remove the nut, 2 bolts and CAC.
Torque: 13 NVm (135 kgfVcm, 10 ftVlbf)
w/ Auto Spoiler:
(a) Fully turn the tire in the illustration direction.
(b) Remove the nut, 2 bolts and CAC.
Torque: 13 NVm (135 kgfVcm, 10 ftVlbf)
HINT: Remove the CAC between the suspension and body
at the illustrated angle of the CAC.
8. REMOVE CAC DUCT FROM CAC
Remove the 4 bolts and CAC duct.
Torque: 4.9 NVm (50 kgfVcm, 43 in.Vlbf)
± ENGINETURBOCHARGER SYSTEM (2JZ±GTE)EG±161

SERVICE SPECIFICATIONS
SERVICE DATA
 
 
 
Turbocharger 
 
 
Turbocharging pressure
Impeller wheel axial play Limit
Impeller wheel radial play Limit 
 
 
61±75 kPa (0.62±0.76 kgf/cm2, 8.8±10.8 psi)
0.162 mm (0.0064 in.)
0.110 mm (0.0045 in.)
TORQUE SPECIFICATIONS
 
 Part tightened 
 NVm 
 kgfVcm 
 ftVlbf
 Turbocharger x Turbine outlet elbow 25 250 18
 Turbo water pipe x Turbocharger 8.8 90 78 in.Vlbf
 Side bearing housing plate x Turbocharger 8.8 90 78 in.Vlbf
 No.2 air tube x No.2 turbocharger 21 210 15 
 Turbocharger x Exhaust manifold
 
 54
 
 550
 
 40
 Turbo oil pipe x Turbocharger 21 210 15
 Turbo oil pipe x Cylinder block 39 400 29
 Turbocharger stay x Turbocharger 43 440 32 
 Turbocharger stay x Cylinder block
 
 43
 
 440
 
 32
 Exhaust gas control valve x Turbine outlet elbow 69 700 51
 Main heated oxygen sensor x Exhaust gas control valve 20 200 14
 Exhaust gas control valve stay x Exhaust gas control valve 43 440 32 
 Exhaust gas control valve stay x Cylinder block
 
 43
 
 440
 
 32
 Exhaust bypass pipe x Turbine outlet elbow 25 250 18
 Exhaust bypass pipe x Exhaust gas control valve 25 250 18
 Intake air control valve x No.2 turbocharger 21 210 15 
No.4 air tube x No.1 turbocharger 
21 
210 
15 
 No.1 air tube x No.1 turbocharger
 
 21
 
 210
 
 15
 No.2 front exhaust pipe x Exhaust gas control valve 62 630 46
 Front exhaust pipe x No.2 front exhaust pipe 58 590 43
 Pipe support bracket x Transmission 43 440 32 
 
 
Upper front crossmember extension x Front suspension Bolt
Nut
 
 
 
29
33
 
 
 
300
340
 
 
 
22
25
 
 
Front lower arm bracket stay x Front suspension Bolt
Nut 
 
44
59 
 
450
600 
 
33
43
 CAC duct x CAC 4.9 50 43 in.Vlbf
 CAC x Body 13 135 10
EG±162± ENGINETURBOCHARGER SYSTEM (2JZ±GTE)