| Engine Configuration |
Inline Four, 4-Stroke, With Cross-Plane Crankshaft |
| Engine Displacement |
998 cc |
| Engine Cooling |
Liquid |
| Compression Ratio |
12.7:1 |
| Combustion Chamber Design |
Pentroof |
| Valves Per Cylinder |
4 |
| Intake Valves Per Cylinder |
2 (Titanium) |
| Exhaust Valves Per Cylinder |
2 (Steel) |
| Bore x Stroke |
78 mm x 52.5 mm |
Conecting Rod Length
&(center-to-center) |
103 mm |
| Connecting Rod Material |
Steel |
| Measured Peak Horsepower |
152.62 bhp @ 11,750 rpm |
| Measured Peak Torque |
76.77 lbs. - ft. @ 8,900
rpm |
| Measured Horsepower-to-weight Ratio |
3.10 pounds per horsepower |
| Engine Redline |
13,750 rpm |
| Valve Angle (Included) |
12 degrees Intake/
12.5 degrees Exhaust (24.5 degrees) |
| Combustion Chamber Volume |
23.02 cc |
| Valve Train Type |
DOHC, Link-plate Chain Drive, Bucket Followers, Shim-under-bucket Lash Adjustment |
| Valve Adjustment Interval |
26,600 miles |
| Intake Valve Diameter |
31 mm |
| Exhaust Valve Diameter |
25 mm |
| Intake Valve Stem
Diameter |
5.0 mm |
| Exhaust Valve Stem Diameter |
4.5 mm |
| Intake Valve Maximum
Lift |
9.1 mm |
| Exhaust Valve Maximum
Lift |
8.2 mm |
| Intake Valve Timing |
|
| &Open BTDC |
37 degrees |
| &Close ABDC |
67 degrees |
| &Duration |
284 degrees |
| Exhaust Valve Timing |
|
| &Open BTDC |
61 degrees |
| &Close ABDC |
31 degrees |
| &Duration |
272 degrees |
| Valve Timing Measuring
Point |
0.15 mm Intake, 0.25 mm Exhaust (lift)
|
| Fuel Delivery System |
Mikuni Fuel Injection |
| Throttle Body Venturi
Size |
45 mm |
| Air Filter Type |
Pleated Paper |
| Exhaust System Type |
4-1-2 (Stainless/Titanium) |
| Ignition System |
Digital |
| Lubrication System |
Wet Sump |
| Oil Capacity |
4.0 quarts (3.8 liters) |
| Fuel Capacity |
4.8 gallons (18.0 liters) |
| Transmission Type |
6-speed, Constant Mesh, Cassett-type |
| 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) |
65/43 (1.512:1) |
| Final Drive Sprocket Teeth
(Ratio) |
47/17 (2.765:1) |
| Transmission Gear Teeth (Ratios) |
|
| &6th |
33/26 (1.269:1) |
| &5th |
30/22 (1.364:1) |
| &4th |
35/23 (1.522:1) |
| &3rd |
37/21 (1.762:1) |
| &2nd |
33/16 (2.063:1) |
| &1st |
38/15 (2.533:1) |
| Transmission Overall
Ratios |
|
| &6th |
5.305:1 |
| &5th |
5.702:1 |
| &4th |
6.636:1 |
| &3rd |
7.366:1 |
| &2nd |
8.625:1 |
| &1st |
10.589:1 |
| |
|
