Buell S1 Lightning Workshop Manual page 137

3
Number of cylinders
Type
Horsepower
Torque (foot-pounds)
Compression ratio
Bore
Stroke
Piston displacement
Oil tank capacity with filter
Service wear limits are given as a guideline for measuring components that are not new. For measurements not given under
SERVICE WEAR LIMITS, see NEW COMPONENTS.
ITEM
VALVE
Fit in Exhaust
guide
Intake
Seat width
Stem protrusion from
cylinder valve pocket
OUTER VALVE SPRING
Free length
Intake 1.751-1.848 in.
(closed)
1.286-1.383 in.
(open)
Exhaust 1.751-1.848 in.
(closed)
1.332-1.429 in.
(open)
INNER VALVE SPRING
Free length
Intake 1.577-1.683 in.
(closed)
1.112-1.218 in.
(open)
Exhaust 1.577-1.683 in.
(closed)
1.158-1.264 in.
(open)
SPECIFICATIONS
GENERAL
2
4-cycle, 45°V Twin
91 @ 5800 RPM
87 @ 5200 RPM
10.0 to 1
3.500 in. 88.9 mm
3.812 in. 96.82 mm
3
73.4 in. 1203 cc
2.1 quarts 1.90 liters
NEW COMPONENTS
0.0015-0.0033 in.
0.008-0.0026 in.
0.040-0.062 in.
1.975-2.011 in.
2.105-2.177 in.
72-92 lbs
183-207 lbs
72-92 lbs
171-195 lbs
1.926-1.996 in.
38-49 lbs
98-112 lbs
38-49 lbs
91-106 lbs
ENGINE IGNITION SPECIFICATIONS
Timing during engine
cranking
Timing with engine at
RPM listed below and
V.O.E.S. connected
Regular idle
Fast idle (all models)
Spark plug gap
NOTE
0.038-0.084 mm 0.0040 in.
0.020-0.066 mm 0.0035 in.
1.02-1.57 mm 0.090 in.
50.17-51.08 mm 2.031 in.
53.47-55.30 mm 2.105 in. (min)
32.6-41.7 kg
82.9-93.8 kg
32.6-41.7 kg
77.5-88.3 kg
48.92-50.70 mm 1.926 in. (min)
17.2-22.2 kg
44.4-50.7 kg
17.2-22.2 kg
41.2-48.0 kg
5° BTDC
20° BTDC
950-1050 1150-1250
RPM RPM
(49 State) (Calif.)
2000 RPM
0.038-0.045 in. 0.96-1.14 mm
SERVICE WEAR LIMITS
0.102 mm
0.089 mm
2.29 mm
51.59 mm
53.47 mm (min)
48.92 mm (min)
3-1