Page 1329 of 1807

P02292
Z16762
5mm
Hexagon
Wrench
- ENGINE MECHANICAL (2JZ-GTE)CYLINDER BLOCK
EM-77
1182 Author: Date:
1997 SUPRA (RM502U)
Reference:
Cylinder block main journal bore diameter (A):
Mark º0º66.020 - 66.022 mm (2.59922 - 2.59929 in.)
Mark º1º66.022 - 66.024 mm (2.59929 - 2.59936 in.)
Mark º2º66.024 - 66.026 mm (2.59936 - 2.59944 in.)
Mark º3º66.026 - 66.028 mm (2.59944 - 2.59952 in.)
Mark º4º66.028 - 66.030 mm (2.59952 - 2.59960 in.)
Mark º5º66.030 - 66.032 mm (2.59960 - 2.59968 in.)
Mark º6º66.032 - 66.034 mm (2.59968 - 2.59976 in.)
Mark º7º66.034 - 66.036 mm (2.59976 - 2.59984 in.)
Crankshaft main journal diameter (B):
Mark º0º61.998 - 62.000 mm (2.44086 - 2.44094 in.)
Mark º1º61.996 - 61.998 mm (2.44078 - 2.44086 in.)
Mark º2º61.994 - 61.996 mm (2.44070 - 2.44078 in.)
Mark º3º61.992 - 61.994 mm (2.44063 - 2.44070 in.)
Mark º4º61.990 - 61.992 mm (2.44055 - 2.44063 in.)
Mark º5º61.988 - 61.990 mm (2.44047 - 2.44055 in.)
Mark º6º61.986 - 61.988 mm (2.44039 - 2.44047 in.)
Mark º7º61.984 - 61.986 mm (2.44031 - 2.44039 in.)
Bearing center wall thickness:
Mark º1º1.994 - 1.997 mm (0.0785 - 0.0786 in.)
Mark º2º1.997 - 2.000 mm (0.0786 - 0.0787 in.)
Mark º3º2.000 - 2.003 mm (0.0787 - 0.0789 in.)
Mark º4º2.003 - 2.006 mm (0.0789 - 0.0790 in.)
Mark º5º2.006 - 2.009 mm (0.0790 - 0.0791 in.)
(k) Completely remove the Plastigage.
26. REMOVE CRANKSHAFT
(a) Lift out the crankshaft
(b) Remove the upper bearings and upper thrust washers
from the cylinder block.
HINT:
Arrange the main bearing caps, bearings and thrust washers in
the correct order.
27. REMOVE OIL NOZZLES (WITH RELIEF VALVES)
Using a 5 mm hexagon wrench, remove the bolt and oil nozzle.
Remove the 6 oil nozzles.
Page 1330 of 1807
P02123
P02108
P02069
P02278
EM-78
- ENGINE MECHANICAL (2JZ-GTE)CYLINDER BLOCK
1183 Author: Date:
1997 SUPRA (RM502U)
28. CHECK FIT BETWEEN PISTON AND PISTON PIN
Try to move the piston back and forth on the piston pin.
If any movement is felt, replace the piston and pin as a set.
29. REMOVE PISTON RINGS
(a) Using a piston ring expander, remove the 2 compression
rings.
(b) Remove the 2 side rails and oil ring expander by hand.
HINT:
Arrange the piston rings in correct order only.
30. DISCONNECT CONNECTING ROD FROM PISTON
(a) Using a small screwdriver, remove the 2 snap rings.
(b) Gradually heat the piston to about 80°C (176°F).
(c) Using a plastic-faced hammer and brass bar, lightly tap
out the piston pin and remove the connecting rod.
HINT:
The piston and pin are a matched set.
Arrange the pistons, pins, rings, connecting rods and
bearings in the correct order.
Page 1331 of 1807

EM0AP-02
P02289
Z02380
P02286
Z00145
121
2 1Thrust
Direction
Axial
Direction
10 mm
(0.39 in)
10 mm
(0.39 in) Middle A
B
C Front
- ENGINE MECHANICAL (2JZ-GTE)CYLINDER BLOCK
EM-79
1184 Author: Date:
1997 SUPRA (RM502U)
INSPECTION
1. REMOVE GASKET MATERIAL
Using a gasket scraper, remove all the gasket material from the
cylinder block surface.
2. CLEAN CYLINDER BLOCK
Using a soft brush and solvent, thoroughly clean the cylinder
block.
3. INSPECT CYLINDER BLOCK SURFACE FOR
FLATNESS
Using precision straight edge and feeler gauge, measure the
surfaces of the cylinder block for warpage.
Maximum warpage: 0.07 mm (0.0028 in.)
If warpage is greater than maximum, replace the cylinder block.
4. INSPECT CYLINDER FOR VERTICAL SCRATCHES
Visually check the cylinder for vertical scratches.
If deep scratches are present, replace the cylinder block.
5. INSPECT CYLINDER BORE DIAMETER
Using a cylinder gauge, measure the cylinder bore diameter at
positions A, B and C in the thrust and axial directions.
Standard diameter:
86.000 - 86.013 mm (3.3858 - 3.3863 in.)
Maximum diameter: 86.02 mm (3.3866 in.)
If the diameter is greater than maximum, replace the cylinder
block.
Page 1332 of 1807

P02288
A02827
About
50 mm
Compressed
Thread
P02085
P02084
P02176
34 mm EM-80
- ENGINE MECHANICAL (2JZ-GTE)CYLINDER BLOCK
1185 Author: Date:
1997 SUPRA (RM502U)
6. REMOVE CYLINDER RIDGE
If the wear is less than 0.2 mm (0.008 in.), using a ridge reamer,
grind the top of the cylinder.
7. INSPECT MAIN BEARING CAP BOLTS
Using vernier calipers, measure the minimum diameter of the
compressed thread at the measuring point.
Standard diameter:
9.96 - 9.97 mm (0.3921 - 0.3925 in.)
Minimum diameter: 9.7 mm (0.382 in.)
If the diameter is less than minimum, replace the bolt.
8. CLEAN PISTON
(a) Using a gasket scraper, remove the carbon from the pis-
ton top.
(b) Using a groove cleaning tool or broken ring, clean the pis-
ton ring grooves.
(c) Using solvent and a brush, thoroughly clean the piston.
NOTICE:
Do not use a wire brush.
9. INSPECT PISTON OIL CLEARANCE
(a) Using a micrometer, measure the piston diameter at right
angles to the piston pin center line, 34 mm (1.34 in.) from
the piston head.
Piston diameter:
85.917 - 85.927 mm (3.3826 - 3.3830 in.)
Page 1333 of 1807

P02086
Z09736
105 mm
EM7639
Piston ringSTD mm (in.)
Maximum mm (in.)
No.1
No.2
Oil (Side rail)0.300 - 0.400
(0.0118 - 0.0157)
0.350 - 0.450
(0.0138 - 0.0178)
0.130 - 0.380
(0.0051 - 0.0150)1.000 (0.0394)
1.050 (0.0413)
0.980 (0.0386)
- ENGINE MECHANICAL (2JZ-GTE)CYLINDER BLOCK
EM-81
1186 Author: Date:
1997 SUPRA (RM502U)
(b) Measure the cylinder bore diameter in the thrust direc-
tions. (See step 5)
(c) Subtract the piston diameter measurement from the cylin-
der bore diameter measurement.
Standard oil clearance:
0.073 - 0.096 mm (0.0029 - 0.0038 in.)
Maximum oil clearance:
0.12 mm (0.0047 in.)
If the oil clearance is greater than maximum, replace all the 6
pistons. If necessary, replace the cylinder block.
10. INSPECT PISTON RING GROOVE CLEARANCE
Using a feeler gauge, measure the clearance between new pis-
ton ring and the wall of the piston ring groove.
Ring groove clearance:
No.1 0.040 - 0.080 mm (0.0016 - 0.0031 in.)
No.2 0.030 - 0.070 mm (0.0012 - 0.0028 in.)
If the clearance is not as specified, replace the piston.
11. INSPECT PISTON RING END GAP
(a) Insert the piston ring into the cylinder bore.
(b) Using a piston, push the piston ring a little beyond the bot-
tom of the ring travel, 105 mm (4.13 in.) from the top of the
cylinder block.
(c) Using a feeler gauge, measure the ring end gap.
Ring end gap:
If the end gap is greater than maximum, replace the piston ring.
If the end gap is greater than maximum, even with a new piston
ring, replace the cylinder block.
Page 1334 of 1807

P02082
Z02381
Z02382
P02275
EM0227
EM-82
- ENGINE MECHANICAL (2JZ-GTE)CYLINDER BLOCK
1187 Author: Date:
1997 SUPRA (RM502U)
12. PINSPECT PISTON PIN FIT
At 80°C (176°F), you should be able to push the piston pin into
the piston pin hole with your thumb.
13. INSPECT CONNECTING ROD ALIGNMENT
Using a feeler gauge and rod aligner, check the connecting rod
alignment.
Check for out-of-alignment
Maximum out-of-alignment:
0.05 mm (0.0020 in.) per 100 mm (3.94 in.)
If out-of-alignment is greater than maximum, replace the con-
necting rod assembly.
Check for twist
Maximum twist:
0.15 mm (0.0059 in.) per 100 mm (3.94 in.)
If twist is greater than maximum, replace the connecting rod as-
sembly.
14. INSPECT PISTON PIN OIL CLEARANCE
(a) Using a caliper gauge, measure the inside diameter of the
connecting rod bushing.
Bushing inside diameter:
22.005 - 22.014 mm (0.8663 - 0.8667 in.)
(b) Using a micrometer, measure the piston pin diameter.
Piston pin diameter:
21.997 - 22.006 mm (0.8660 - 0.8664 in.)
(c) Subtract the piston pin diameter measurement from the
bushing inside diameter measurement.
Standard oil clearance:
0.005 - 0.011 mm (0.0002 - 0.0004 in.)
Maximum oil clearance:
0.05 mm (0.0020 in.)
If the oil clearance is greater than maximum, replace the bush-
ing. If necessary, replace the piston and piston pin as a set.
Page 1335 of 1807

P02143
P02459
About
20 mmCompressed
P02153
Z02383
ItemSTD mm (in.)
U/S 0.25 mm (in.)
Main journal
Crank pin61.984 - 62.000
(2.4403 - 2.4409)
51.982 - 52.000
(2.0465 - 2.0472)61.745 - 61.755
(2.4309 - 2.4313)
51.745 - 51.755
(0.0372 - 2.0376)
- ENGINE MECHANICAL (2JZ-GTE)CYLINDER BLOCK
EM-83
1188 Author: Date:
1997 SUPRA (RM502U)
(d) Check the piston pin fit at room temperature.
Coat the piston pin with engine oil and push it into the con-
necting rod with your thumb.
15. INSPECT CONNECTING ROD BOLTS
Using vernier calipers, measure the minimum diameter of the
compressed bolt at the measuring point.
Standard diameter: 8.1 - 8.3 mm (0.319 - 0.327 in.)
Minimum diameter: 8.0 mm (0.315 in.)
If the diameter is less than minimum, replace the connecting rod
bolt.
16. INSPECT CRANKSHAFT FOR RUNOUT
(a) Place the crankshaft on V-blocks.
(b) Using a dial indicator, measure the circle runout at the
center journal.
Maximum circle runout: 0.06 mm (0.0024 in.)
If the circle runout is greater than maximum, replace the crank-
shaft.
17. INSPECT MAIN JOURNALS AND CRANK PINS
(a) Using a micrometer, measure the diameter of each main
journal and crank pin.
Diameter:
If the diameter is not as specified, check the oil clearance. (See
page EM-71)
(b) Check each main journal and crank pin for taper and out-
of-round as shown.
Maximum taper and out-of round:
0.02 mm (0.0008 in.)
If the taper or out-of-round is greater than maximum, grind or
replace the crankshaft.
Page 1336 of 1807
EM-84
- ENGINE MECHANICAL (2JZ-GTE)CYLINDER BLOCK
1189 Author: Date:
1997 SUPRA (RM502U)
18. IF NECESSARY, GRIND AND HONE MAIN
JOURNALS AND/OR CRANK PINS
(a) Grind and hone the main journals and/or crank pins to the
finished undersized diameter
(See procedure step 17).
(b) Install new main journal and/or crank pin undersized
bearings.