Page 1353 of 1807

EM0AA-02
Q08242
TOYOTA Hand-Held Tester
DLC3
P11288
DLC1
TE1
E1
P11943
Green Lead
Wire
- ENGINE MECHANICAL (2JZ-GTE)IGNITION TIMING
EM-1 1
111 6 Author: Date:
1997 SUPRA (RM502U)
IGNITION TIMING
INSPECTION
1. WARM UP ENGINE
Allow the engine to warm up to normal operating temperature.
2. CONNECT TOYOTA HAND-HELD TESTER OR OBDII
SCAN TOOL
(a) Connect the TOYOTA hand-held tester or OBDII scan
tool to the DLC3.
(b) Please refer to the TOYOTA hand-held tester or OBDII
scan tool operator's manual for further details.
3. CONNECT TIMING LIGHT TO ENGINE
4. CHECK IDLE SPEED
(a) Race the engine speed at 2,500 rpm for approx. 90 se-
conds.
(b) Check the idle speed.
Idle speed: 650 ± 50 rpm
5. INSPECT IGNITION TIMING
(a) Using SST, connect terminals TE1 and E1 of the DLC1.
SST 09843-18020
(b) Open the igniter connector cover and remove the green
lead wire.
(c) Connect the timing light clip to the green lead wire.
NOTICE:
Use a timing light that can detect the primary signal.
After finishing the inspection, make sure the lead wire
is stored inside the connector cover.
(d) Using a timing light, check the ignition timing.
Ignition timing: 10 ± 2° BTDC @ idle
(Transmission in neutral position)
Page 1354 of 1807
EM-12
- ENGINE MECHANICAL (2JZ-GTE)IGNITION TIMING
111 7 Author: Date:
1997 SUPRA (RM502U)
(e) Remove the SST from the DLC1.
SST 09843-18020
6. FURTHER CHECK IGNITION TIMING
Ignition timing: 10 - 20° BTDC @ idle
(Transmission in neutral position)
HINT:
The timing mark moves in a range between 10° and 20°.
7. DISCONNECT TIMING LIGHT FROM ENGINE
8. DISCONNECT TOYOTA HAND- HELD TESTER OR
OBDII SCAN TOOL
Page 1355 of 1807

EM0AE-02
EM0126
No!
P02283
Turn
P02075
- ENGINE MECHANICAL (2JZ-GTE)TIMING BELT
EM-19
1124 Author: Date:
1997 SUPRA (RM502U)
INSPECTION
1. INSPECT TIMING BELT
NOTICE:
Do not bend, twist or turn the timing belt inside out.
Do not allow the timing belt to come into contact with
oil, water or steam.
Do not utilize timing belt tension when installing or re-
moving the mount bolt of the camshaft timing pulley.
If there are any defects, as shown in the illustrations, check the
following points.
(a) Premature parting
Check for proper installation.
Check the timing cover gasket for damage and
proper installation.
(b) If the belt teeth are cracked or damaged, check to see if
either camshaft is locked.
(c) If there is noticeable wear or cracks on the belt face,
check to see if there are nicks on the side of the idler
pulley lock.
(d) If there is wear or damage on only one side of the belt,
check the belt guide and the alignment of each pulley.
(e) If there is noticeable wear on the belt teeth, check timing
cover for damage and check gasket has been installed
correctly and for foreign material on the pulley teeth.
If necessary, replace the timing belt.
2. INSPECT IDLER PULLEY
(a) Check the turning smoothness of the idler pulley.
If necessary, replace the idler pulley.
(b) Check the turning smoothness of the tensioner.
If necessary, replace the tensioner.
3. INSPECT TIMING BELT TENSIONER
(a) Visually check tensioner for oil leakage.
HINT:
If there is only the faintest trace of oil on the seal on the push
rod side, the tensioner is all right.
If leakage is found, replace tensioner.
Page 1356 of 1807

P02103
P02175Protrusion
Z16755
M/T
Z16757
M/T EM-20
- ENGINE MECHANICAL (2JZ-GTE)TIMING BELT
1125 Author: Date:
1997 SUPRA (RM502U)
(b) Hold the tensioner with both hands and push the push rod
strongly against the floor or wall to check that it doesn't
move.
If the push rod moves, replace the tensioner.
(c) Measure the protrusion of the push rod from the housing
end.
Protrusion: 8.0 - 8.8 mm (0.315 - 0.346 in.)
If the protrusion is not as specified, replace the tensioner.
4. M/T:
INSPECT DRIVE BELT TENSION DAMPER
Compress and extend the tension damper rod and check that
there is no abnormal resistance or unusual operation sounds.
If there is any abnormality, replace the tension damper with a
new one.
NOTICE:
When discarding the tension damper, use the following
procedure.
Fully extend the damper rod.
Using a drill, make a hole in the cylinder as shown to
release the gas inside.
CAUTION:
The gas coming out is harmless, but be careful of the chips
which may fly up when drilling.
Page 1357 of 1807

EM0A9-02
P11759
P12644
P11760
P11757
EM-4
- ENGINE MECHANICAL (2JZ-GTE)VALVE CLEARANCE
1109 Author: Date:
1997 SUPRA (RM502U)
VALVE CLEARANCE
INSPECTION
HINT:
Inspect and adjust the valve clearance when the engine is cold.
1. REMOVE IGNITION COILS ASSEMBLIES
(See page IG-6)
2. DISCONNECT ENGINE WIRE PROTECTOR FROM
NO.4 TIMING BELT COVER
(a) Disconnect the engine wire from the 4 wire clamps.
(b) Lift out the engine wire protector from the cylinder head
covers.
3. DISCONNECT ENGINE WIRE PROTECTOR FROM
COWL TOP PANEL
(a) Remove the bolt, and disconnect the ground strap.
(b) Remove the 2 bolts, and lift up the engine wire protector.
4. REMOVE IAC VALVE PIPE
(a) Disconnect the 5 air hoses from the IAC valve pipe.
(b) Remove the IAC valve pipe from the pipe clamp on the
No.1 cylinder head cover.
5. REMOVE NO.1 AND NO.2 CYLINDER HEAD
COVERS
(a) Disconnect the cruise control actuator cable from the
cable bracket.
(b) Remove the bolt holding the VSV to the turbo outlet duct.
(c) Disconnect the 2 PCV hoses from the cylinder head cov-
ers.
Page 1358 of 1807

P11944
P11593
A02561
P10712
3
5
EX
IN3
5
11
11 22 44
P10711
46
EX
IN46
22
3355
66
- ENGINE MECHANICAL (2JZ-GTE)VALVE CLEARANCE
EM-5
111 0 Author: Date:
1997 SUPRA (RM502U)
(d) Remove the 6 bolts, 2 nuts, 8 seal washers, No.1 cylinder
head cover and gasket.
(e) Remove the 6 bolts, 2 nuts, 8 seal washers, No.2 cylinder
head cover and gasket.
6. SET NO.1 CYLINDER TO TDC/COMPRESSIO
(a) Turn the crankshaft pulley, and align its groove with timing
mark º0º of the No.1 timing belt cover.
NOTICE:
Always turn the crankshaft clockwise.
(b) Check that the timing marks of the camshaft timing pul-
leys are aligned with the timing marks of the No.4 timing
belt cover.
If not, turn the crankshaft 1 revolution (360°).
7. INSPECT VALVE CLEARANCE
(a) Check only those valves indicated in the illustration.
Using a feeler gauge, measure the clearance be-
tween the valve lifter and camshaft.
Record the valve clearance measurements of those
that are out of specification. They will be used later
to determine the required replacement adjusting
shim.
Valve clearance (Cold):
Intake 0.15 - 0.25 mm (0.006 - 0.010 in.)
Exhaust 0.25 - 0.35 mm (0.010 - 0.014 in.)
(b) Turn the crankshaft pulley 1 revolution (360°), and align
the groove with timing mark º0º of the No.1 timing belt cov-
er.
(c) Check only the valves indicated as shown. Measure the
valve clearance. (See procedure in step (a))
Page 1359 of 1807
P02094
Upward
Cam Lobe
Notch
P12294
SST (A)
P11925
SST (A)
SST (B)
P12860
SST (B) EX Side
IN Side
P10901
SST (B)
Magnetic Finger EM-6
- ENGINE MECHANICAL (2JZ-GTE)VALVE CLEARANCE
1111 Author: Date:
1997 SUPRA (RM502U)
8. ADJUST VALVE CLEARANCE
(a) Remove the adjusting shim.
Turn the camshaft so that the cam lobe for the valve
to be adjusted faces up.
Turn the valve lifter with a screwdriver so that the
notches are perpendicular to the camshaft.
Using SST (A), hold the camshaft as shown in the
illustration.
SST 09248-55040 (09248-05410)
Using SST (A), press down the valve lifter and place
SST (B) between the camshaft and valve lifter. Re-
move SST (A).
SST 09248-55040 (09248-05410, 09248-05420)
HINT:
Apply SST (B) at slight angle on the side marked with º7º,
at the position shown in the illustration
Insert SST (B) gently from the inside as shown in the il-
lustration.
Using a small screwdriver and a magnetic finger, remove
the adjusting shim.
Page 1360 of 1807

EM0494
P11926
SST (B)
SST (A)
P11777
Seal Packing
- ENGINE MECHANICAL (2JZ-GTE)VALVE CLEARANCE
EM-7
111 2 Author: Date:
1997 SUPRA (RM502U)
(b) Determine the replacement adjusting shim size according
to the following Formula or Charts:
Using a micrometer, measure the thickness of the
removed shim.
Calculate the thickness of a new shim so the valve
clearance comes within specified value.
T .......... Thickness of used shim
A .......... Measured valve clearance
N .......... Thickness of new shim
Intake
N = T + (A - 0.20 mm (0.008 in.))
Exhaust
N = T + (A - 0.30 mm (0.012 in.))
Select a new shim with a thickness as close as pos-
sible to the calculated values.
HINT:
Shims are available in 17 sizes in increments of 0.050 mm
(0.0020 in.), from 2.500 mm (0.0984 in.) to 3.300 mm (0.1299
in.).
(c) Install a new adjusting shim.
Place a new adjusting shim on the valve lifter, with
imprinted numbers facing down.
Press down the valve lifter with SST (A), and re-
move SST (B).
SST 09248-55040
(d) Recheck the valve clearance.
9. REINSTALL NO.1 AND NO.2 CYLINDER HEAD COV-
ERS
(a) Remove any old packing (FIPG) material.
(b) Apply seal packing to the cylinder head as shown in the
illustration.
Seal packing:
Part No. 08826-00080 or equivalent
(c) Install the gaskets to the No.1 and No.2 cylinder head
covers.
(d) Install the 12 seal washers to the bolts.
(e) Install the No.2 cylinder head cover with the 6 bolts, 4 seal
washers and 4 nuts..
Torque: 5.4 N´m (55 kgf´cm, 48 in.´lbf)
(f) Install the No.1 cylinder head cover with the 6 bolts, 4 seal
washers and 4 nuts..
Torque: 5.4 N´m (55 kgf´cm, 48 in.´lbf)
(g) Connect the 2 PCV hoses to the cylinder head covers.
(h) Install the bolt holding the VSV to the turbo outlet duct.
(i) Connect the cruise control actuator cable to the cable
bracket.