Cylinder Block Assembly: Testing and Inspection

Checking pistons and cylinder bores




Compression: 10.9 : 1
Nominal dia. 100.00 mm

An arrow pointing toward the belt pulley indicates the installation position.





1 - Plain compression ring, chrome-plated
2 - Oil scraper ring
3 - Three-part oil wiper ring

Repair Stage Piston Cylinder bore dia. tolerance group
(mm) (mm) code


Standard size 99.980 100.000 0
99.990 ± 0.005 100.010 ± 0,005 1
100.000 100.020 2


Oversize 1 100.480 100.500 I 0
100.490 ± 0.007 100.510 ± 0.005 I 1
100.500 100.520 I 2

Checking pistons
Measure approx. 61 mm from piston crown, 90 offset from piston pin axis.

Checking cylinder bores
Measure approx. 61 mm from upper edge of cylinder bore, transverse to engine block. Mount lower crankcase section and tighten bolts to specified torque for measuring.