Typically these boats are aluminum, but there were a few fiberglass boats tested as well. Most boats were in the three to four-second range. The best time-to-plane we recorded was 2.9 seconds, which is very quick, indeed. Bottom shape also seemed to be an important factor as the fastest boats had a deadrise of 15-degrees and the slowest at 19-degrees. Most economical cruise speeds seemed to be from 20 to 23 mph where the boats got from 4.9 to 7.4 mpg (for the lightest boat). The top speed of both the lightest and the heaviest boats studied was over 40 mph, even though there was a 300 lbs. The internal engine components are bathed in oil to reduce wear for longer life.Ī typical sportboat performance chart when powered by a Mercury 115-hp four-stroke. In some cases, the system will automatically reduce the engine's revs to protect the engine from catastrophic damage from low oil pressure or overheating. When overheating, low oil PSI, over-revving, or low battery voltage occurs, an audible alarm or visual alert will be sent. The Mercury 115 has been designed for low maintenance and easy maintenance. Electric Fuel Injection means that the exact amount of fuel and air needed is electronically controlled for max efficiency, instant power response, and reliable starting every time. Negative 4-degree for strong holeshots and positive 16-degree for excellent top speed. (Double Over Head Cams), four valves per cylinder. Oil changes are particularly easy because of the handy locations of the components. Mercury has designed its 115-hp engine to be easy to maintain. It has smooth shifting, troll control, a handy power trim toggle, throttle friction for fine-tuning, and locks in two positions for trailering and operating.
115 mercury motor manual#
An optional center-mounted tiller is available in a manual or power steering version, on both new boats and repower applications. This SmartCraft feature allows the operator to set a trolling speed down to as low as 650 rpms, in increments of 10 RPM. This system provides real-time information from fuel management to boat speed to alerting the operator to potential problems from several causes. The Mercury 115 produces twice the AMPs as its prime four-stroke competitor. The Mercury 115 has a gear ratio of 2.33:1 which provides low-end torque throughout the entire rpm range.
115 mercury motor series#
The reason it can offer this warranty is because of the metal alloys employed, Mercury's special hard-anodizing coating system and painting process, and the number of 300 Series stainless steel parts used. Only Mercury offers a limited 3-year corrosion-failure warranty.
We have all read enough engine-maker promos to know that they all say their engines are durable, but here is a case in point that is hard to deny. But if it were, its block and head could handle the tremendous energy produced in those engines with almost twice as much power. The difference is that the 115 is not supercharged. Many other components from its beefy big brother is used as well. The Mercury 115 EFI four-stroke outboard is an in-line 4-cylinder that is made from the same 1.7 liter block and powerhead used in the 200-hp Verado.
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