100%
EM-81
ENGINE MECHANICAL (2JZ-GTE) - CYLINDER BLOCK
(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.
P02086
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.
105 mm
EM0224 Z09736
(c) Using a feeler gauge, measure the ring end gap.
Ring end gap:
Piston ring | STD mm (in.) | Maximum mm (in.)
No.1 | 0.300 - 0.400 (0.0118 - 0.0157) | 1.000 (0.0394)
No.2 | 0.350 - 0.450 (0.0138 - 0.0178) | 1.050 (0.0413)
Oil (Side rail) | 0.130 - 0.380 (0.0051 - 0.0150) | 0.980 (0.0386)
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.
EM7639
1997 SUPRA (RM502U)
Author : Date : 1186