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EM-140
[VQ35DE]
CYLINDER BLOCK
Revision: 2004 November 2004 FX35/FX45
● Measure the distortion on the block upper face at some different
points in 6 directions.
● If out of the distortion limit, replace cylinder block.
MAIN BEARING HOUSING INNER DIAMETER
● Install main bearing caps and main bearing beam with main
bearings removed, and tighten mounting bolts to the specified
torque. Refer to EM-126, "
ASSEMBLY" for the tightening proce-
dure.
● Using a bore gauge, measure the inner diameter of the main
bearing housing.
● If out of the standard, replace cylinder block and main bearing
caps as assembly.
NOTE:
Cylinder block cannot be replaced as single part, because it is
machined together with main bearing caps.
PISTON TO CYLINDER BORE CLEARANCE
Cylinder Bore Inner Diameter
● Using a bore gauge, measure cylinder bore for wear, out-of-
round and taper at 6 different points on each cylinder. (“X” and
“Y” directions at “A”, “B” and “C”) (“Y” is in longitudinal direction
of engine)
● If the measured value exceeds the limit, or if there are scratches
and/or seizure on the cylinder inner wall, hone or re-bore the
inner wall.
● An oversize piston is provided. When using an oversize piston,
re-bore cylinder so that the clearance of the piston-to-cylinder
bore satisfies the standard.
CAUTION:
When using oversize piston, use it for all cylinders with
oversize piston rings.
● When using an oversize piston, use it for all cylinders with over-
size piston rings.
Limit : 0.10 mm (0.0039 in)
SEM123C
Standard : 63.993 - 64.017 mm (2.5194 - 2.5203 in)
PBIC1643E
Standard inner diameter:
95.500 - 95.530 mm (3.7598 - 3.7610 in)
Wear limit:
0.20 mm (0.0079 in)
Out-of-round (Difference between “X” and “Y”):
Limit: 0.015 mm (0.0006 in)
Taper (Difference between “A” and “C”):
Limit: 0.010 mm (0.0004 in)
Oversize (Service) : 0.20 mm (0.0079 in)
PBIC0923E
SEM843E
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