2010 ZX-10R:
Displacement- 998 cc
Bore and Stroke- 76.0 x 55.0 mm
Compression Ratio- 12.9:1
Fuel System- Fuel injection: ø43 mm x 4 (Keihin) with oval sub-throttles, dual injection
Lubrication- Forced lubrication, wet sump with oil cooler
2010 Z1000:
Displacement- 1,043 cc
Bore and Stroke- 77.0 x 56.0 mm
Compression Ratio- 11.8:1
Fuel System- Fuel injection: ø38 mm x 4 (Keihin) with oval sub-throttles
Lubrication- Forced lubrication, wet sump
2010 Z1000 Technology:
"Engineers wanted to offer superb throttle response, power delivery with a hit in mid-range, and a seductive intake howl with just the right amount of engine vibration to make accelerating an exhilarating experience.
All-new liquid-cooled, DOHC, 16-valve 1,043 cc engine offers a greater power output (138 PS) and stronger torque than that of the previous Z1000. The new displacement was chosen with the desire to maintain the Z1000 name.
Bore and stroke of 77.0 x 56.0 mm were chosen to achieve the desired engine character. Compare this to the bore and stroke of the 2008 Z1000 and 2009 Ninja ZX-10R:
2008 Z1000 - 77.2 x 50.9 mm
2009 Ninja ZX-10R - 76.0 x 55.0 mm
A bore slightly smaller than that of its predecessor, but larger than that of the Ninja ZX-10R, and a stroke longer than both of these result in an engine very strong in the everyday rpm range most used by Super Nakeds. Power delivery is quite linear, but the engine spins up noticeably faster from about 7,000 rpm onwards. Silky smooth response from mid-high rpm ensures excellent driveability.
Crankshaft and transmission shafts are arranged in a straight line (compared to the Ninja ZX-10R, which uses a triangular layout).
New cool air system uses ducts to direct fresh (cool) air into the air cleaner. Positioning the ducts close to the rider allows the intake sound when accelerating to be enjoyed.
New chassis:
Designed to maximize enjoyment of sport riding on the street, the new aluminium twin-tube frame was designed specifically for the 2010 Z1000. Similar in concept to the frame of the Ninja ZX-10R, the frame beams go over the engine (on a supersport model the frame beams would be much stiffer). Ninja ZX-10R-style footpegs with knurling offer good grip, more direct feel and control, and also contribute to the sporty look."
http://www.kawasaki.ca/model/z1000/technology:1192