Benelli 2014 BN600, Service Manual, Page: 24 / 243

SPEC
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ENGINE SPECIFICATIONS
VALVES, VALVE SEATS, VALVE GUIDES STANDARD
Aspirator valve clearance (cold)
0.13 ~ 0.19 mm
Exhaust valve clearance (cold)
0.19 ~ 0.25 mm
VALVE DIMENSIONS
A
Head diameter ”A”
Intake Ø 25 mm
Exhaust Ø 22 mm
B
Contact surface length ”B”
Intake 1.9-2.1 mm
Exhaust 1.75 ~ 1.95 mm
C
Seat width ”C”
Intake 1 ~ 1.1 mm
Exhaust 1 ~ 1.1 mm
B
Contact surface length "B"
Intake 1.9 ~ 2.1 mm
Exhaust 1.75 ~ 1.95 mm
Valve stem diameter
Intake 3.965 ~ 3.98 mm
Exhaust 3.965 ~ 3.98 mm
Clearance between valve stem and valve guide Intake 0.05 ~ 0.075 mm
Exhaust 0.04 ~ 0.065 mm
Valve stem eccentricity
0.05 mm
VALVE SPRINGS STANDARD
Intake/exhaust effective length
External
38.8 mm
Internal 41.6 mm
Intake/exhaust installed length (valve
closed) External 152.8 N m / 15.58 Kgf•m
Internal 143 N m / 15.58 Kgf•m
Intake 1.2 mm
Exhaust 1.2 mm
CYLINDERS STANDARD
Cylinder layout perpendicular inline
Stroke ratio 65.0:45.2
Compression ratio: 11.5x1
Stroke 65
Maximum ovalisation /
O
/ 0.008
/o/ 0.006
TECHNICAL DETAILS