Sea-Doo will unveil its first four-stroke personal watercraft in mid-August. Called the GTX 4-TEC, the new three-rider model is based on the successful GTX platform.
In releasing the GTX 4-TEC, Sea-Doo will join an exclusive two-member club of watercraft manufacturers that have officially announced they will produce a four-stroke model in 2002. Earlier, this month, Yamaha announced it would roll out a four-stroke watercraft for its dealers and the media in mid-August.
A release date for Honda's planned four-stroke watercraft has not been set. The company currently does not build watercraft, but announced plans to do so last fall.
All existing personal watercraft currently are powered by two-stroke engines, which have faced increasingly stringent Environmental Protection Agency emissions standards. Personal watercraft and two-stroke outboard engine manufacturers first responded to EPA mandates by applying by direct-injection technology to two-stroke motors. The results were cleaner and more efficient powerplants and, according to their manufacturers, compliance with the stricter standards. However, the move toward four-stroke power, by the leading personal watercraft manufacturers in the market, is another step toward cleaner power.
The GTX 4-TEC reportedly exceeds EPA 2006 standards.
According to a press release from Bombardier, parent company of Sea-Doo, the GTX 4-TEC " is specially designed to meet the rapidly changing demands of watercraft consumers while complying with the worldwide efforts of respecting environmental sensitivity."
The GTX 4-TEC will be powered an in-line three-cylinder engine that runs on 87-octane fuel. The 1,500cc motor features a 12-valve design and, according to the manufacturer, creates substantial torque, strong acceleration and outstanding top end performance.
The engine also boasts a closed-loop cooling system in which the watercraft's ride plate is used as an engine-coolant heat exchanger, much like an automobile radiator. A dry-sump Tipover Protection called dubbed TOPS activates a valve to stop oil flow into the combustion chambers if the watercraft rolls over.
Look for a complete review of the GTX 4-TEC on boats.com this fall.