Technical data

STD. REPAIR SERVICE
VALUE LIMIT LIMIT
1. Compression pressure @ 280 RPM 32Kg/cm
2
26Kg/cm
2
32Kg/cm
2
2. Compression pressure difference
between cylinders (maximum) 2.5Kg/cm
2
3. Firing Order W13 1-2
W21 1-3-2
W27 - W33 1-3-4-2
4. Injection Timing - BTDC of compression stroke when started"'-, at smoke set position.
Marine Engine 23
0
+/- 1.5
0
Generator 19
0
+/- 1.5
0
5. Cylinder Head
a. Bottom surface distortion 0.05mm/less 0.1mm
b. Valve guide ID W13, W21, W27 6.6 mm
W33 8.0
c. Valve seat angle 45
0
d. Valve seat width 1.3-1.8mm 2.5mm
e. Valve seat sinkage -l mm
6. Valve Timing
a. Intake valve open (BTDC)
W13, W21, W27 18
0
W33 20
0
b. Intake valve close (ABDC)
W13, W21, W27 46
0
W33 44
0
c. Exhaust valve open (BBDC)
W13, W21, W27 46
0
W33 44
0
d. Exhaust valve close (ATDC)
W13, W21, W27 18
0
W33 80
0
7. Valve Clearance (engine cold) 0.25 mm
8. Valve
a. Valve head diameter (Intake)
W13 27.0 mm
W21, W27 27.2 mm
W33 30.0 mm