Toyota 2VZ-FE Manual page 84

EM-82
ENGINE MECHANICAL – Cylinder Block
BORING OF CYLINDERS
HINT:
Bore all the six cylinders for the oversized piston outside
diameter.
Replace the piston rings with ones to match the
oversized pistons.
1. KEEP OVERSIZED PISTONS
Oversized piston diameter:
O/S 0.50
2. CALCULATE AMOUNT TO BORE CYLINDER
(a) Using a micrometer, measure the piston diameter at
right angles to the piston pin center line, 24.25 mm
(0.9547 in.) from the piston head.
(b) Calculate the amount each cylinder is to be rebored as
follows:
Size to be rebored = P + C – H
P = Piston diameter
C = Piston oil clearance
H = Allowance for honing
3. BORE AND HONE CYLINDERS TO CALCULATED
DIMENSIONS
Maximum honing: 0.02 mm (0.0008 in.)
NOTICE: Excess honing will destroy the finished round-
ness.
87.945–87.975 mm
(3.4624–3.4636 in.)
0.045–0.065 mm (0.0018–0.0026 in.)
0.02 mm (0.0008 in.) or less