Suzuki df2.5 - Page 165

6 DF2.5 (Serial No. 21 0001 and later)
Item
Unit
Data
DF2.5
VALVENALVE GUIDE
Valve diameter IN
mm (in)
20.0 (0.79)
EX mm (in) 18.0 (0.71)
Valve
IN STD mm (in)
0.13- 0.17 (0.005 - 0.007)
clearance
(Cold
engine
EX
STD mm (in)
0.13- 0.17 (0.005 - 0.007)
Valve seat angle IN
-
45°
EX
-
45°
Valve
guide
IN
STD
mm (in)
0.010 - 0.037 (0.0004- 0.0015)
to valve stem
Limit
nim (in)
0.075 (0.0030)
clearance
STD mm (in)
.
0.025 - 0.052 (0.001 0- 0.0020)
EX
Limit mm (in)
0.090 (0.0035)
Valve
guide
IN,
inside
EX
STD mm (in)
4.000-4.012 (0.1575- 0.1580)
diameter
Valve stem
IN STD mm (in)
3.975- 3.990 (0.1565 - 0.1571)
outside
diameter
EX STD mm (in) 3.960-3.975 (0.1559- 0.1565)
Valve
stem IN,
Limit mm (in) 0.35 (0.014)
deflection
EX
Valve stem IN,
Limit mm (in) 0.05 (0.002)
run out EX
Valve head IN,
Limit mm (in) 0.08 (0.003)
radial
runout EX
Valve head IN,
Limit mm (in) 0.5 (0.02)
thickness EX
Valve seat IN,
STD mm (in) 0.8- 1.0 (0.03- 0.04)
contact width EX
Valve spring free STD mm (in)
22.8
(0.90)
length
Limit mm (in) 21.9 (0.86)
Valve
spring tension STD N (kg, lbs)
36.05- 42.85 (3.61 - 4.29, 8.0- 9.5) for 16.9 mm (0.67 in)
Limit N (kg,
lbs) 33.53 (3.35, 7.39) for 16.9 mm (0.67 in)