2007 Buell P3: Engine 3-1
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SPECIFICATIONS 3.1
NOTE
Service wear limits are given as a guideline for measuring
components that are not
new
. For measurement specifica-
tions not given under SERVICE WEAR LIMITS, see NEW
COMPONENTS.
Table 3-1. General Specifications
GENERAL
Type Single cylinder, air cooled, four-stroke
Compression Ratio 9.2: 1
Bore 3.50 in. 88.8 mm
Stroke 3.125 in. 79.375 mm
Engine Displacement 30 cu. in. 492 cc
Oil Capacity (with filter change) 2.0 quarts 1.89 liters
Table 3-2. Ignition Specifications
ENGINE IGNITION SPECIFICATIONS
Timing Advance (during engine cranking) 1° BTDC
Timing Advance (at 1200 RPM) 20° BTDC
Regular Idle 1200 RPM
Fast Idle 2000 RPM
Table 3-3. Valve and Valve Seat Specifications
VALVE NEW COMPONENTS SERVICE WEAR LIMITS
inches mm inches mm
Fit in guide Exhaust 0.0015-0.0033 0.0381-0.0838 0.0040 0.1016
Intake 0.0008-0.0026 0.0200-0.0700 0.0035 0.0889
Seat width 0.040-0.062 1.016-1.575 0.090 2.286
Stem protrusion from cylinder valve
pocket
1.975-2.011 50.165-51.079 2.031 51.587
Table 3-4. Outer Valve Spring Specifications
OUTER VALVE SPRING NEW COMPONENTS SERVICE WEAR LIMITS
Free length 2.105-2.177 in. 53.467-55.296 mm 2.105 in. (min) 53.467 mm (min)
Intake 1.751-1.848 in. (closed) 72-92 lbs 33-42 kg
1.286-1.383 in. (open) 183-207 lbs 83-94 kg
Exhaust 1.751-1.848 in. (closed) 72-92 lbs 33-42 kg
1.332-1.429 in. (open) 171-195 lbs 78-88 kg
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