Inspect Piston Oil Clearance - Toyota Celica 2000 Repair Manual

EM-100
ENGINE MECHANICAL - CYLINDER BLOCK
Using a groove cleaning tool or broken ring, clean the pis­
(b)
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) 1 ZZ-FE:
Using a micrometer, measure the piston diameter at right
angles to the piston pin center line, 25.6 m m {1 .008 in.)
from the piston head.
(b) 2ZZ-GE:
Using a micrometer, measure the piston diameter at right
angles to the piston pin center line, 1 2.0 mm (0.048 in.)
from the piston bottom.
Piston diameter:
1 ZZ-FE:
78.925 - 78.935 mm (3.1073 - 3.1077 in.)
2ZZ-GE:
81.975 - 81.993 mm (3.2274 - 3.2281 ln.)
(c ) Measure the cylinder bore diameter in the thrust direc­
tions (See procedure in step 5).
Subtract the piston diameter measurement from the cylin­
(d)
der bore diameter measurement.
Standard oil clearance:
1 ZZ-FE:
0.065 - 0.088 mm (0.0026 - 0.0035 in.)
2ZZ-GE:
0.007 - 0.038 mm (0.0003 - 0.0015 1n.)
Maximum oil clearance:
0.10 mm (0.0039 ln.)
If the oll clearance is greater than maximum, replace all the 4
pistons. If necessary, replace the cylinder block.