Suzuki Ignis Service Manual page 565

• Using a cylinder gauge (1), measure cylinder bore in thrust
and axial directions at two positions ("a" and "b") as shown in
figure.
If any of the following conditions is noted, rebore cylinder.
1) Cylinder bore dia. exceeds limit.
2) Difference of measurements at two positions exceeds taper
limit.
3) Difference between thrust and axial measurements exceeds
out-of-round limit.
Cylinder bore diameter
Limit : 78.15 mm (3.077 in.)
Cylinder taper and out-of-round
Limit : 0.10 mm (0.004 in.)
"a" : 50 mm (1.96 in.)
"b" : 95 mm (3.74 in.)
NOTE:
If any one of four cylinders has to be rebored, rebore all
four to the same next oversize. This is necessary for the
sake of uniformity and balance.
Pistons
• Inspect piston for faults, cracks or other damaged.
Damaged or faulty piston should be replaced.
• Piston diameter :
As indicated in figure, piston diameter should be measured
at a position 19.5 mm (0.77 in.) from piston skirt end in the
direction perpendicular to piston pin.
Piston diameter specification
Standard size
Oversize
0.25 mm (0.0098 in.)
Oversize
0.50 mm (0.0196 in.)
"a" : 19.5 mm (0.77 in.)
ENGINE MECHANICAL (M13 ENGINE) 6A1-59
77.953 – 77.968 mm
(3.0690 – 3.0696 in.)
with coating
77.969 – 77.984 mm
(3.0696 – 3.0702 in.)
78.203 – 78.218 mm
(3.0789 – 3.0794 in.)
78.453 – 78.468 mm
(3.0887 – 3.0893 in.)