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Thanks to these advanced features, the naturally-aspirated Sea-Doo GTX 4-TEC produced a whopping 155 HP, only 10 HP less than the turbocharged Aquatrax F12X.Īlthough the 2-stroke GTX line had received three hull redesigns and many upgrades over the year, the new GTX 4-TEC received an entirely new hull and top deck.
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Sea-Doo has been using this CLCS (Closed Loop Cooling System) technology ever since, while other manufacturers are still sticking with traditional open-loop cooling for some reason. This revolutionary technology kept saltwater away from the engine, which resulted in less wear and tear and zero salt build-ups in the engine. This closed-circuit cooling utilized a special coolant to transfer heat away from the engine while using the ride plate as a radiator. This power source was a 4-stroke, 1503 Rotax in-line triple utilizing many advanced features, including:īesides 4-stroke technology, another remarkable innovation on the GTX 4-TEC was its closed-loop cooling system. If you take a closer look at the list above, you can see that the GTX 4-TEC stood out from the crowd with its large-displacement, 1493cc engine. In contrast, they were larger, heavier, and much harder to work on. Unlike the outdated 2-stroke units, 4-stroke power mills didn’t require “carb work” (cleaning, rebuilding) or a periodic top-end rebuild. Also, 4-stroke engines were more fuel-efficient and provided higher durability and reliability. Honda Axuatrax F12X: 1,235cc, 4-cylinder, turbocharged, 165 HPĮach of these models had its pros and cons, but all of them provided a much quieter and cleaner operation.In a nutshell, these early 4-stroke jet skis and their key engine specifications were as follows: Just like Sea-Doo, Yamaha also introduced its 4-stroke ski for 2002, and both were closely followed by the Honda Aquatrax. As a result of this effort, the all-new GTX 4-TEC was released for the 2002 model year. 2002-2003 Sea-Doo GTX DI (Rotax 947 DI)īut everything changed in 2002 when Sea-Doo decided to bring 4-stroke technology to its fleet.Over the years, the 2-stroke GTX line underwent many different generations, including: Sea-Doo revealed its flagship 3-seater runabout, the GTX, in 1993.
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