Engine Configuration |
Inline Four, 4
Stroke |
Engine Displacement |
999.8 cc |
Engine Cooling
System |
Liquid |
Compression
Ratio |
12.3:1 |
Combustion
Chamber Design |
Pentroof |
Valves Per
Cylinder |
4 |
Intake Valves Per Cylinder |
2 (Titanium) |
Exhaust Valves Per Cylinder |
2 (Titanium) |
Bore x Stroke |
76 x 55.1
mm |
Connecting Rod Length |
104.45 mm |
Connecting Rod Material |
Steel |
Claimed
Peak Horsepower |
187 bhp
@ N/A rpm |
Claimed
Peak Torque |
87 lbs.
- ft. @ 8,500 rpm |
Measured Peak Horsepower |
149.66 bhp @ 10,600 rpm |
Measured Peak Torque |
76.64 lbs.-ft @ 9,600 rpm |
Engine Redline |
13,400 rpm |
Valve Angle (I
ncluded) |
11 degrees
intake, 11 degrees exhaust (22 degrees) |
Combustion
Chamber Volume |
21.1 cc |
Valve Train
Type |
DOHC, Link-plate
Chain Drive, Bucket Followers, Shim-under-bucket Lash Adjustment |
Valve Adjustment
Interval |
16,000 miles |
Intake Valve
Diameter |
30.5 mm |
Exhaust
Valve Diameter |
24 mm |
Intake Valve
Stem Diameter |
4.5 mm |
Exhaust
Valve Stem Diameter |
4.0 mm |
Intake Valve
Maximum Lift |
9.3 mm |
Exhaust
Valve Maximum Lift |
8.4 mm |
Intake Valve
Timing |
|
Open BTDC |
21 degrees |
Close ABDC |
43 degrees |
Duration |
244 degrees |
Exhaust
Valve Timing |
|
Open BBDC |
41 degrees |
Close ATDC |
14 degrees |
Duration |
235 degrees |
Valve Timing
Measuring Point |
1.0 mm |
Fuel Delivery
System |
Keihin Fuel
Injection |
Throttle
Body Venturi Size |
46 mm |
Air Filter
Type |
Pleated
Paper |
Exhaust
System Type |
4-2-1, Stainless
Steel |
Ignition
System |
Digital |
Lubrication
System |
Wet Sump |
Oil Capacity |
3.9 quarts |
Fuel Capacity |
3.9 gallons |
Transmission
Type |
6-speed,
Constant Mesh |
Clutch Type |
Multi-plate,
Wet, Back-torque-limiting |
Clutch Actuation System |
Cable |
Clutch Spring Type |
Diaphragm |
Number Of Clutch Springs |
2 |
Number of
Clutch Plates |
17 |
Drive Plates |
9 |
Driven Plates |
8 |
Primary
Drive |
Gear (Straight-cut) |
Primary
Drive Gear Teeth (Ratio) |
79/ 46 (1.717:1) |
Final Drive
Sprocket Teeth (Ratio) |
42/ 16 (2.625:1) |
Transmission
Gear Teeth (Ratios) |
|
6th |
33/ 29 (1.138:1) |
5th |
34/ 28 (1.214:1) |
4th |
32/ 24 (1.333:1) |
3rd |
33/ 22 (1.500:1) |
2nd |
32/ 18 (1.778:1) |
1st |
32/ 14 (2.286:1) |
Transmission
Overall Ratios |
|
6th |
5.129:1 |
5th |
5.472:1 |
4th |
6.008:1 |
3rd |
6.761:1 |
2nd |
8.014:1 |
1st |
10.303:1 |
1st |
1st |
1st |
1st |
1st |
1st |
1st |
1st |
1st |
1st |
1st |
1st |
1st |
1st |
1st |
1st |
1st |
1st |
1st |
1st |