| Engine Configuration |
Inline Four, 4-Stroke |
| Engine Displacement |
999 cc |
| Engine Cooling |
Liquid |
| Compression Ratio |
12.8:1 |
| Combustion Chamber Design |
Twin Swirl |
| Valves Per Cylinder |
4 |
| Intake Valves Per Cylinder |
2 (Titanium) |
| Exhaust Valves Per Cylinder |
2 (Titanium) |
| Bore x Stroke |
74.5 mm x 57.3 mm |
Conecting Rod Length
(center-to-center) |
112.5 mm |
| Connecting Rod Material |
Steel |
| Measured Peak Horsepower |
161.64 bhp @ 11,600 rpm |
| Measured Peak Torque |
78.47 lbs. - ft. @ 9,750
rpm |
| Measured Horsepower-to-weight Ratio |
2.83 pounds per horsepower |
| Engine Redline |
13,750 rpm |
| Valve Angle (Included) |
12 degrees Intake/
12.5 degrees Exhaust (24.5 degrees) |
| Combustion Chamber Volume |
12.2 cc |
| Valve Train Type |
DOHC, Link-plate Chain Drive, Bucket Followers, Shim-under-bucket Lash Adjustment |
| Valve Adjustment Interval |
14,500 miles |
| Intake Valve Diameter |
31 mm |
| Exhaust Valve Diameter |
25 mm |
| Intake Valve Stem
Diameter |
4.5 mm |
| Exhaust Valve Stem Diameter |
4.5 mm |
| Intake Valve Maximum
Lift |
9.7 mm |
| Exhaust Valve Maximum
Lift |
8.9 mm |
| Intake Valve Timing |
|
| Open BTDC |
42 degrees |
| Close ABDC |
73 degrees |
| Duration |
295 degrees |
| Exhaust Valve Timing |
|
| Open BTDC |
60 degrees |
| Close ABDC |
39 degrees |
| Duration |
279 degrees |
| Valve Timing Measuring
Point |
0.3 mm (lift)
|
| Fuel Delivery System |
Keihin Fuel Injection |
| Throttle Body Venturi
Size |
44 mm |
| Air Filter Type |
Paper Mesh |
| Exhaust System Type |
4-1-2 (Titanium/Stainless Steel/Titanium) |
| Ignition System |
Digital |
| Lubrication System |
Wet Sump |
| Oil Capacity |
3.8 quarts (3.6 liters) |
| Fuel Capacity |
4.6 gallons (17.5 liters) |
| Transmission Type |
6-speed, Constant Mesh |
| Clutch Type |
Multi-plate, Wet, Back-torque-limiting |
| Clutch Actuation System |
Cable |
| Clutch Spring Type |
Coil |
| Number Of Clutch Springs |
6 |
| Number of Clutch Plates |
17 |
| Drive Plates |
9 |
| Driven Plates |
8 |
| Primary Drive |
Gear (Straight-cut) |
| Primary Drive Gear Teeth (Ratio) |
76/47 (1.617:1) |
| Final Drive Sprocket Teeth
(Ratio) |
42/17 (2.470:1) |
| Transmission Gear Teeth (Ratios) |
|
| 6th |
33/26 (1.269:1) |
| 5th |
34/25 (1.360:1) |
| 4th |
36/24 (1.500:1) |
| 3rd |
36/21 (1.714:1) |
| 2nd |
39/19 (2.052:1) |
| 1st |
41/16 (2.562:1) |
| Transmission Overall
Ratios |
|
| 6th |
5.263:1 |
| 5th |
5.432:1 |
| 4th |
5.991:1 |
| 3rd |
6.846:1 |
| 2nd |
8.196:1 |
| 1st |
10.234:1 |
| |
|
