| Engine Configuration |
Inline Four, 4-stroke |
| Engine Displacement |
998 cc |
| Engine Cooling |
Liquid |
| Compression Ratio |
13.0:1 |
| Combustion Chamber Design |
Pentroof |
| Valves Per Cylinder |
4 |
| Intake Valves Per Cylinder |
2 (Titanium) |
| Exhaust Valves Per Cylinder |
2 (Titanium) |
| Bore x Stroke |
76.0mm x 55.0mm |
Connecting Rod Length
(center-to-center) |
106.65mm
|
| Connecting Rod Material |
Steel |
| Claimed Peak Horsepower |
158.21bhp @ 11,700rpm |
| Claimed Peak Torque |
71.99lbs.-ft. @ 10,950 |
| Engine Redline |
13,750 rpm |
| Valve Angle (Included) |
13.0mm Intake/ 12.0 degrees Exhaust (25.0 degrees) |
| Combustion Chamber Volume |
12.66cc |
| Valve Train Type |
DOHC, Gear and Roller Chain Drive, Bucket Followers, Shim-under-bucket Lash Adjustment |
| Valve Adjustment Interval |
15,000 miles |
| Intake Valve Diameter |
31.0 mm |
| Exhaust Valve Diameter |
24.5 mm |
| Intake Valve Stem
Diameter |
4.5 mm |
| Exhaust Valve Stem Diameter |
4.5 mm |
| Intake Valve Maximum
Lift |
10.3 mm |
| Exhaust Valve Maximum
Lift |
9.1 mm |
| Intake Valve Timing |
|
| Open BTDC |
36 degrees |
| Close ABDC |
80 degrees |
| Duration |
296 degrees |
| Exhaust Valve Timing |
|
| Open BBDC |
74 degrees |
| Close ATDC |
39 degrees |
| Duration |
293 degrees |
| Valve Timing Measuring
Point |
0.3mm (lift)
|
| Fuel Delivery System |
Keihin Fuel Injection |
| Throttle Body Venturi
Size |
47mm |
| Air Filter Type |
Pleated Paper |
| Exhaust System Type |
4-2-1 (titanium) |
| Ignition System |
Digital |
| Lubrication System |
Wet Sump |
| Oil Capacity |
3.9 quarts (3.7 liters) |
| Fuel Capacity |
4.5 gallons (17.0 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 |
19 |
| Drive Plates |
10 |
| Driven Plates |
9 |
| Primary Drive |
Gear (straight-cut) |
| Primary Drive Gear Teeth (Ratio) |
79/47 (1.681:1) |
| Final Drive Sprocket Teeth
(Ratio) |
39/14 (2.294:1)
|
| Transmission Gear Teeth (Ratios) |
|
| 6th |
31/23 (1.348:1) |
| 5th |
26/18 (1.444:1) |
| 4th |
33/21 (1.571:1) |
| 3rd |
33/19 (1.737:1) |
| 2nd |
39/19 (2.053:1) |
| 1st |
39/15 (2.600:1) |
| Transmission Overall
Ratios |
|
| 6th |
5.197:1 |
| 5th |
5.568:1 |
| 4th |
6.058:1 |
| 3rd |
6.698:1 |
| 2nd |
7.917:1 |
| 1st |
10.026:1 |
| |
|
