Chrysler Conquest 1988 Service Manual page 765

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ENGINE .-
Cylinder Block
9-65
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6EN05:
INSPE,CTION
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Visually check the cylinder block for scores, rust and
corrosion. Also check for cracks or any other defects by
using a flaw detecting agent (magnafluxing). Correct or
replace the block if damaged.
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Measure the cylinder bore with a cylinder gauge at three
levels in the directions of A and B. If the cylinder bores.
show more than specified out-of-round or taper or if the
cylinder walls are badly scuffed or scored, the cylinder block
should be rebored and honed, and new oversize pistons
and rings fitted.
Measuring points are as shown.
Cylinder bore: 91.1 mm (3.587 in.)
Out-of-roundness and taper of cylinder bore:
Max. 0.02 mm (.OOOS in.)
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If cylinder top ridge is worn in stages, cut away with ridge
reamer.
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Oversize pistons are available in four sizes.
Piston service size and mark:
0.25 mm (.OlO in.) O.S. 0.25
0.50 mm (.020 in.) O.S. 0.50
0.75 mm (.030 in.) O.S.
0.75
1.00 mm (.039 in.) O.S. 1 .oo
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To rebore the cylinder bore to oversize, keep the specified
clearance between the oversize piston and the bore, and
make sure that all pistons used are of the same oversize.
The standard measurement of the piston outside diameter
is taken at a level 2 mm (.08 in.) above the bottom of the
piston skirt and across the thrust faces.
Piston-to-cylinder wall clearance:
0.03 - 0.05 mm (.0012 - .0020 in.)
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Check for damage and cracks.
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Check top surface for flatness. If excessive flatness is
evident, grind to minimum limit or replace.
Flatness of gasket surface:
Standard value Max. 0.05 mm (0020 in.)
Limit
0.1 mm (.004 in.)
Overall height:
Standard value
316 mm (12.44 in.)
Limit 315.8 mm'(12.433 in.)
Caution
If cylinder head gasket surface has already been
ground, the thickness of the removed stock should be
included in the grinding limit .of -0.2 mm (-.008 in.).