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Evinrude E-TEC includes both new technologies and improvements to existing technologies. We've built these technologies onto existing and proven - durable, reliable platforms. For example, our 2-cylinder 40 through 60 horsepower Evinrude E-TEC outboards are built on the mid-section and gear case of the 55 horsepower Commercial series outboards.
In fact, the Commercial outboards are the basis for the outboards the U.S. Navy Seal Teams and U.S. Marine Corps Recon Teams rely upon during their assigned missions. The 3-cylinder 75/90 horsepower Evinrude E-TEC outboards are built on the mid-section and gear case of the 60 degree V4.
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What does E-TEC stand for? Evinrude E-TEC is the best of both technologies. It provides the quiet, efficiency and cleanliness many customers associate with the 4-stroke outboards, combined with the torque, throttle response, quick acceleration and raw power associated with the 2-stroke outboard. The technology is considered 2-Stroke, Direct Injection. Evinrude E-TEC in fact, has cleaner exhaust emissions than a 4-stroke, it produces 5 to 10 times less Carbon Monoxide (CO) while idling or trolling. What is the new technology used on Evinrude E-TEC outboards? Toyota model 5fgc25 1995 manual. Evinrude E-TEC uses several new technologies.
The most obvious, when looking at an Evinrude E-TEC outboard, is the fuel injector. It is not a solenoid type injector, like the Evinrude DI models Bombardier began producing for the 2002 model year. This injector design requires less operating current to activate, meaning we are able to use smaller electronics which operate at cooler temperatures. Cooler running electronics equates to durability. The injector has fewer parts and requires fewer tight tolerances, which lowers manufacturing costs. What about the not so obvious technology? What's not obvious about Evinrude E-TEC is what's inside the engine block.
Evinrude E-TEC incorporates pistons made from a new alloy, which was developed by NASA. This alloy has proven to be 2 to 3 times stronger at operating temperature than the aluminum alloys pistons are traditionally made with. The pistons used in the 40 through 60 and the 75/90 are what's known as 'full-skirt' pistons. The internal design of the block (the intake, exhaust and transfer ports) doesn't require machining 'port windows' into the piston. This combined with the new alloy, increase the piston strength and durability.
What else have you done to the internal engine components? As stated earlier, there are improvements too. Just as the electronics in our home & office PC's have advanced and become smaller packages, so have the electronics (microprocessor) in our engine management system. The improvements Bombardier initiated to the Engine Management Module (EMM) beginning with 2002 production, such as a 30% thicker pc board and increased cooling for components, have been designed into the EMM for the Evinrude E-TEC outboards. Additionally, our Engineering Team has incorporated diagnostic LED's into the housing, allowing basic troubleshooting to be performed without diagnostic software. A flexible casing and 60% smaller size complete the package and provide a clean, state of the art, under-hood appearance. What have you done to make the engine so quiet?
Our Engineers designed a new air intake system for these engines. The intake system serves to quiet engine noise. An idle air by-pass tube supplies air to the crankcase at low rpm. There are no holes machined into the throttle plates, therefore no whistle sound at idle. Innovative baffling in the air silencer box cancels resonant noises.
Unlike other manufacturers' outboards, there's no distinctive 'pucka-pucka-pucka' sound of an air compressor, or any belt whine, or any cam chain noise - we don't use them. How much do the E-TEC outboards weigh? A battery is not required to run the rope start models. However, if you have electrical accessories you want to operate and would like to take advantage of the charging system, the capability is already there. In the event of a battery failure with an electric start model, the engine can be rope started and run without the battery. Earlier I read this engine uses an electric fuel pump. It also has an EMM, which is basically a computer.