2007 MODEL INFORMATION

Transcription

1 2007 MODEL INFORMATION MODEL NAME MARKETING CODE JET SKI Ultra 250X JT1500B Version: 23 Sep 2006

2 INDEX OVERVIEW P.3 KEY FEATURES P.6 PERFORMANCE & ACCELERATION FROM ANOTHER DIMENSION P.6 SEAWORTHY HULL P.9 HANDLING & TURNING PERFORMANCE P.11 FLAGSHIP FEATURES P.13 ADDITIONAL FEATURES P.15 COLOUR(S) P.16 SPECIFICATIONS P MY JET SKI Ultra 250X MODEL INFORMATION P AGE 2

3 OVERVIEW JET SKI ULTRA 250X: ULTRA PERFORMANCE FOR THE ULTIMATE RIDE. There s a new king on the water. The ultra-high performance JET SKI Ultra 250X pumps out an incredible 250 PS* from its massive supercharged and intercooled engine. Key Ultra 250X technologies stem from Kawasaki s numerous IJSBA racing championships, which ensure its impressive acceleration and excellent hook-up even when conditions are not calm. Its precise handling and superb stability are equally impressive, thanks to a brand-new hull designed specifically to allow riders to fully explore the engine s awesome performance. The most powerful production personal watercraft in history**, Kawasaki s mighty flagship serves notice that ULTRA defines the pinnacle of PWC performance and firmly re-establishes Kawasaki s reputation as the high-performance industry leader. With mind-blowing power, unmistakable presence and superb handling, the Ultra 250X simply leaves everything else in its wake. (* Engine performance may vary depending on operating conditions.) (** As of September 2006.) 2007MY JET SKI Ultra 250X MODEL INFORMATION P AGE 3

4 OVERVIEW The new leader in ultra-high performance engineering The 1,498 cm 3 Ultra 250X marine engine is derived from Kawasaki s astounding JET SKI STX-15F, and thanks to its Roots-type high-volume supercharger, it kicks out power equivalent to normally aspirated high-performance engine with a much larger displacement. Unlike centrifugal superchargers or turbochargers though, the direct-drive supercharger delivers boost virtually instantly at any engine speed from idle to redline. The resultant torque curve is just what was needed for a personal watercraft designed to accelerate hard from a standstill and then keep right on going. The heat build-up that occurs in supercharged engines when the intake air is compressed is completely overcome in the Ultra 250X through the use of a large-capacity intercooler. The Ultra 250X supercharger produces a maximum boost pressure ratio of 0.8 kg/cm 2 [11.4 psi], the highest of any PWC. At this pressure, ambient air can be heated to extremely high temperatures, limiting the engine s power output. But the large-capacity intercooler, which is nearly as large as the engine block, cools the air right back down to ambient temperature or even less ideal for producing maximum power. Besides its mammoth power output, the grin-inducing acceleration is due to a huge 155 mm jet pump equipped with the Kawasaki s largest impeller and jet nozzle, which are designed to provide maximum thrust and superb rough water hook-up. 2007MY JET SKI Ultra 250X MODEL INFORMATION P AGE 4

5 OVERVIEW Race-derived hull matches the powerful new engine Hull technology on the Ultra 250X is equally impressive. Specifically designed to handle the enormous output from the supercharged engine, this race-developed hull handles with precision and stability with a high level of seaworthiness and at speeds from idle to its rather astounding top end. For starters, the fibreglass reinforced plastic (FRP) hull is loaded with DNA from Kawasaki s championship winning machines. This includes carefully designed sponsons and chines for straight-line stability and exact cornering, and a deep 22.5 bottom angle for a smooth ride even in rough conditions. In recognition of the tremendous power on tap, we designed the Ultra 250X hull to lean into corners motorcycle style to help the passengers stay centred and the rider in control at peak cornering g forces. Flagship features becoming the new PWC king True to its racing roots, the Ultra 250X includes a 5-step adjustable handle that allows either stand-up or sit-down riding, and, befitting a Kawasaki flagship watercraft, it comes with thoughtful standard features like an enormous 200-litre front storage compartment and a 78-litre fuel tank (one of the largest in the industry) that provides a substantial cruising range. From horsepower to handling and everything in between, when the spray settles after your first ride on the Ultra 250X, one thing will be certain. Designed to be the most powerful PWC on the planet, this ultra new JET SKI offers new levels of performance and excitement. But what else did you expect from Kawasaki? 2007MY JET SKI Ultra 250X MODEL INFORMATION P AGE 5

6 PERFORMANCE & ACCELERATION FROM ANOTHER DIMENSION Supercharger and Intercooler-equipped Engine The Ultra 250X s liquid-cooled 1,498 cm 3, In-line 4-cylinder engine is fitted with a supercharger and intercooler, giving it an output of 250 PS and making it the most powerful production PWC in the world. The roots type supercharger ensures powerful and instant acceleration even from a standing start. (Photo 1, Illustrations A,B) 1 Engine Performance Comparison A 4 3 Ultra 250X (Roots Supercharger) Centrifugal Supercharger STX-15F Power 5 2 Torque Engine Speed Base 1,498 cm 3 In-line Four Marine Engine Roots Supercharger Intercooler Air Bypass Valve Intake Manifold Intake Air Flow B Intake Manifold Throttle Assembly Vacuum ABV Regulatory ABV Intercooler Cylinder Bank Roots Air Compressor Air Filter 2007MY JET SKI Ultra 250X MODEL INFORMATION P AGE 6

7 * The roots type supercharger is known as a fixed displacement supercharger. This design produces large amounts of boost even at low rpm, for instant and powerful acceleration right off of idle. With every revolution it force-feeds the engine 2 litres of air, ensuring a stable supply of highpressure intake air at all rpm. The result is a very flat and meaty torque curve and step-free power across the rev range, with none of the time lag associated with turbochargers. Theoretical volume is 2,060 cm 3 /rev, and the maximum boost pressure ratio is 0.8 kg/cm 2 [11.4 psi]. This arrangement delivers idealised intake pressure the instant the throttle is opened, for astonishing acceleration. (Photo 2, Illustration C) Boost Comparison Roots Supercharger Centrifugal Supercharger 2 C Boost Engine Speed * To ensure ideal intake air pressure, not one, but two ABVs (air bypass valves) are used. A vacuum ABV is used to balance air pressure upstream and downstream of the throttle body. It works mostly at low and medium rpm. A second, regulatory ABV aids the vacuum ABV in preventing over-boosting when the throttle is shut (or opened) suddenly. Should the system s specified maximum pressure be exceeded, the regulatory ABV is activated, allowing air to escape. (Photo 3) 3 * Efficiently cooling the high-pressure intake air is a liquid-cooled intercooler. Friction between the air molecules heats the intake air to extremely high (powerrobbing) temperatures, but the intercooler cools the air back down to ambient temperature. Cooler air results in higher combustion efficiency and high engine output. (Photo 4) MY JET SKI Ultra 250X MODEL INFORMATION P AGE 7

8 * The engine s over-rev range has been raised 700 rpm, to 8,900 rpm. * Inconel exhaust valves with superior heat resistance are fitted for high reliability. (Valve sizes are: 33.4 mm intake / 28.3 mm exhaust.) * The 83.0 x 69.2 mm bore and stroke are the same as the JET SKI STX-15F. Compression ratio is lower at 7.8:1. Fuel Injection * New, high-flow fuel injectors with 4 orifices are fitted to complement the increased power output and to improve combustion efficiency. (Photo 5) * A single throttle body is used with a bore diameter of 60 mm. 5 Jet Pump * To efficiently convert the Ultra 250X s massive 250 PS into thrust, an all-new, large-diameter 155 mm jet pump was designed. Impeller * To suit the 155 mm jet pump a new, larger impeller was designed, offering improved thrust in the higher speed ranges. The sophisticated 3-blade unit delivers both high performance and quiet operation. Guide Vanes * To suit the new jet pump, a new 8-vane guide replaces the earlier 6-vane unit. These guide vanes smooth and regulate the flow of water from the impeller for efficient and powerful propulsion. Exhaust * The Ultra 250X features a 4-into-2-into-1 powerboat-style exhaust system, which routes the exhaust pipe upwards. This allows the smoothest flow for exhaust gases, maximising exhaust efficiency. 2007MY JET SKI Ultra 250X MODEL INFORMATION P AGE 8

9 SEAWORTHY HULL Conditions on the temperamental sea are varied. Befitting a flagship machine, the ability of Ultra 250X s race-derived hull to handle waves means that its performance is not compromised when conditions are not calm. The combination of unearthly power coupled with the latest in hull technology allows Kawasaki s flagship to cleave through waves rather than bounce over them, enabling the most consistent handling and acceleration performance of any Kawasaki hull to date. Hull * The new hull was designed based on feedback from Kawasaki s IJSBA championship winning racing machines. The hull was specially designed to cope with the Ultra 250X s 250 PS engine output and offers both high stability and responsive handling in both calm and choppywater conditions. * To ensure stable handling performance from the larger, more powerful supercharged engine, the new super-strong hull is 250 mm longer. * The lower hull is specially designed to distribute the engine and power delivery loads over a wide area. 2007MY JET SKI Ultra 250X MODEL INFORMATION P AGE 9

10 Ride Plate * A groove added from the centre to the rear of the ride plate makes it easier to hold a straight course when running straight ahead. (Photo 6) 6 Jet Pump * To effectively convert the Ultra 250X s 250 PS output into thrust, a new jet pump was designed. The pump features a large 155 mm diameter and uses eight guide vanes in place of the earlier six. * Designed based on feedback from Kawasaki s race program, the new pump delivers superior traction and stable output in rough water conditions, and is a significant factor in the Ultra 250X s mind-boggling acceleration. Bond Flange & Bumper * The bottom of the hull slants upwards steeply from the centre section to the bow, allowing the Ultra 250X to penetrate swells and waves with less shock. At low speeds the result is great stability; at higher speeds the Ultra 250X s massive thrust enables the hull to push through waves rather than bounce over top of them. (Photos 7,8) MY JET SKI Ultra 250X MODEL INFORMATION P AGE 10

11 HANDLING & TURNING PERFORMANCE Hull * Although it has a similar V-shape to the JET SKI STX-15F, the Ultra 250X s hull enables a high bank angle, motorcycle-like turning performance. This reduces the side G-loads imposed on riders during turns, allowing them to better concentrate on riding. The V-angle at the bottom of the hull has been changed from the 20 of the 15F to This idealised V-angle helps prevent spinouts during sharp turns. As a result, the Ultra 250X delivers the neutral handling and turning characteristics for which Kawasaki JET SKI are famous. Stand-up sports riding is easy thanks to adjustable handle and riding position * The handlebars are 5-way adjustable and suit a wide range of riders and riding styles. The relatively narrow seat is very comfortable for either stand-up or seated riding, as well as for passengers. (Photo 9) * Ergonomic deck design gives plenty of legroom without necessitating a high seat, for rider-friendly seating accommodations MY JET SKI Ultra 250X MODEL INFORMATION P AGE 11

12 Sponsons * Newly developed sponsons extend further from the hull to provide stable straight-line performance (e.g. porpoising from start is minimised, etc) while helping to retain the machine s narrow overall design. They also contribute significantly to the Ultra 250X s high manoeuvrability when changing direction (particularly at higher speeds). (Photos 10,11) Quattro KSD * Ridges across the bottom of the bow, Kawasaki Splash Deflectors deflect water splashing forward from under the hull. To reduce spray during high-speed turns, the earlier triple splash deflector now has one more deflector mounted at the top. Whether turning or blasting straight ahead, at high speeds or low, the Quattro KSD minimises spray, allowing greater rider concentration. (Photo 12) MY JET SKI Ultra 250X MODEL INFORMATION P AGE 12

13 FLAGSHIP FEATURES Capacious Storage * The large-capacity, fully sealed 200-litre storage area has plenty of room for recreational equipment. A detachable storage compartment is also fitted. (Photos 13,14, Illustration D) D * Mounted on the centre console is a detachable drink holder with space for two drink bottles. (Photo 15) * Integral with the under-seat rear grip is compact storage area which is ideal for tools and other small items. (Photo 16) MY JET SKI Ultra 250X MODEL INFORMATION P AGE 13

14 Extended Cruising Range * Offering more fuel capacity than any machine in its class, the Ultra 250X s 78-litre fuel tank holds 14 litres more than the JET SKI STX-15F. (Illustration E, Photo 17) E 17 Kawasaki Smart Steering/SLO-Mode * KSS (Kawasaki Smart Steering) is equipped to help new riders better enjoy the performance of this remarkable machine. * Smart Learning Operation (SLO)-Mode function allows newer riders to become familiar with the handling and response of this JET SKI watercraft at a more relaxed pace before unleashing the full power of the Ultra 250X. Two separate keys (one for SLO-mode, one for full-power operation) prevent operating mistakes. (Photo 18) MY JET SKI Ultra 250X MODEL INFORMATION P AGE 14

15 ADDITIONAL FEATURES * The reverse lever has been moved from the right side to the left side for easier operation. (Photo 19) * Small power adjustments are easy with the well-designed throttle lever. Even during extended operation the rider s finger does not get tired. 19 * A long rear boarding step makes it easy to climb on board, and the step retracts inside the bumper to prevent damage. (Photo 20) 20 * The Ultra 250X features a silent cleaning system to purge sea water used to cool the engine. Mounted on the right side cover it is easily accessed when the hatch is opened. Because operation can be done with the seat still fitted, it is virtually noiseless. Fitting a separate connecting tube is quick and easy. (Photo 21) 21 * To avoid concentrating heavy components towards the rear, the battery is located inside the front storage area near the centre of the machine. This remote location also frees up space inside the engine bay. * Mirrors are mounted to the upper deck to facilitate opening of the hatch cover. (Photos 22,23) MY JET SKI Ultra 250X MODEL INFORMATION P AGE 15

16 COLOUR(S) * Valiant Blue / Metallic Phantom Silver * Sunbeam Red 2007MY JET SKI Ultra 250X MODEL INFORMATION P AGE 16

17 SPECIFICATIONS ENGINE Type Displacement Bore and Stroke Compression ratio Valve system Fuel system Intake system Ignition Starting Cooling Lubrication JT1500B7F 4-stroke In-Line Four 1,498 cm 3 83 x 69.2 mm 7.8:1 DOHC, 16 valves Fuel injection: ø60 mm x 1 Supercharger and intercooler Digital Electric Inducted water Forced lubrication, semi-dry sump DRIVE SYSTEM Coupling Type Thrust Impeller diameter Steering Direct drive from engine Axial flow, single stage 6,780 N {692 kgf} 6,650 N {678 kgf} (JPN) ø155 Steerable nozzle PERFORMANCE Max. power 184 kw {250 PS} / 7,750 rpm 180 kw {245 PS} / 7,750 rpm (JPN) Max. torque 237 N. m {24.2 kgf. m} / 6,500 rpm 233 N. m {23.8 kgf. m} / 6,500 rpm (JPN) DIMENSIONS Overall length Overall width Overall height Dry weight Fuel capacity 3,370 mm 1,190 mm 1,150 mm 410 kg 78 litres The specifications mentioned here apply to and have been achieved by production models under standard operating conditions. We intend only to give a fair description of the vehicle and its performance capabilities but these specifications may not apply to every machine supplied for sale. Kawasaki Heavy Industries, Ltd. reserves the right to alter specifications without prior notice. Equipment illustrated and specifications may vary to meet individual markets. Available colours may vary by market. 2007MY JET SKI Ultra 250X MODEL INFORMATION P AGE 17