| Engine Configuration |
Single, 4-stroke |
| Engine Displacement |
249 cc |
| Engine Cooling |
Liquid |
| Compression Ratio |
10.7:1 |
| Combustion Chamber Design |
Pentroof |
| Valves Per Cylinder |
4 |
| Intake Valves Per Cylinder |
2 (Steel) |
| Exhaust Valves Per Cylinder |
2 (Steel) |
| Bore x Stroke |
76.0mm x 55.0mm |
Connecting Rod Length
(center-to-center) |
103.0mm
|
| Connecting Rod Material |
Steel |
| Claimed Peak Horsepower |
22.11bhp @ 9,300rpm |
| Claimed Peak Torque |
14.71lbs.-ft. @ 6,900 |
| Engine Redline |
10,500 rpm |
| Valve Angle (Included) |
12.0mm Intake/ 14.0 degrees Exhaust (26.0 degrees) |
| Combustion Chamber Volume |
17.7cc |
| Valve Train Type |
DOHC, Link-plate Chain Drive, Roller Cam Followers, Forked Rockers Shim-under-rocker Lash Adjustment |
| Valve Adjustment Interval |
16,000 miles |
| Intake Valve Diameter |
30.0 mm |
| Exhaust Valve Diameter |
24.0 mm |
| Intake Valve Stem
Diameter |
4.0 mm |
| Exhaust Valve Stem Diameter |
4.0 mm |
| Intake Valve Maximum
Lift |
7.5 mm |
| Exhaust Valve Maximum
Lift |
6.5 mm |
| Intake Valve Timing |
|
| Open BTDC |
20 degrees |
| Close ABDC |
35 degrees |
| Duration |
235 degrees |
| Exhaust Valve Timing |
|
| Open BTDC |
40 degrees |
| Close ABDC |
0 degrees |
| Duration |
220 degrees |
| Valve Timing Measuring
Point |
1.0mm (lift)
|
| Fuel Delivery System |
PGM-FI Fuel Injection |
| Throttle Body Venturi
Size |
38mm |
| Air Filter Type |
Pleated Paper Element |
| Exhaust System Type |
1-1 (Stainless Steel with Steel muffler) |
| Ignition System |
Digital |
| Lubrication System |
Wet Sump |
| Oil Capacity |
1.9 quarts (1.8 liters) |
| Fuel Capacity |
3.4 gallons (12.9 liters) |
| Transmission Type |
6-speed Constant Mesh |
| Clutch Type |
Multi-plate, Wet |
| Clutch Actuation System |
Cable |
| Clutch Spring Type |
Coil |
| Number Of Clutch Springs |
5 |
| Number of Clutch Plates |
9 |
| Drive Plates |
4 |
| Driven Plates |
5 |
| Primary Drive |
Gear (straight-cut) |
| Primary Drive Gear Teeth (Ratio) |
73/26 (2.808:1) |
| Final Drive Sprocket Teeth
(Ratio) |
38/14 (2.714:1)
|
| Transmission Gear Teeth (Ratios) |
|
| 6th |
26/27 (0.962:1) |
| 5th |
29/26 (1.115:1) |
| 4th |
30.23 (1.304:1) |
| 3rd |
33/21 (1.571:1) |
| 2nd |
36/17 (2.117:1) |
| 1st |
40/12 (3.333:1) |
| Transmission Overall
Ratios |
|
| 6th |
7.331:1 |
| 5th |
8.497:1 |
| 4th |
9.938:1 |
| 3rd |
11.972:1 |
| 2nd |
16.133:1 |
| 1st |
25.400:1 |
| |
|
