When buying a boat engine, most inexperienced owners of watercraft choose the least powerful units. The reason for this is the affordable cost of such engines. However, after some time, shipowners are dissatisfied with the acquisition due to restrictions in speed. Let's find out how to increase the power of the outboard motor? What measures can be resorted to to significantly “disperse” the engine of a motor boat?
How realistic is it to improve the performance of outboard motors?
To increase the amount of horsepower in low-powered engines is quite possible. In particular, this applies to imported boat motors.
As practice shows, acquiring a relatively inexpensive boat engine of a reputable brand, you can work on its refinement, which will allow you to get a model with characteristics similar to motors from the upper price category. The most popular solutions here include the following:
- Comparison of technical indicators of the existing unit with the top model, the characteristics of which the shipowner seeks. In this case, an increase in power is facilitated by the replacement of the exhaust manifold, flap valves, and carburetor.
- Removing the power limiter. To increase the parameter, in addition, it is possible to refine the units that control the fuel consumption of outboard motors, in particular, they are responsible for supplying fuel to the internal combustion chamber.
- Carburetor boring. The operation is aimed at increasing the diameter of the diffuser and, as a result, is reflected in increasing the power of the engine.
- Seeking advice from a service center mechanic. Experts will not only tell you how to increase the power of a boat engine of a particular brand, but also select the appropriate parts, the installation of which will increase the number of horsepower.
How to increase the power indicator without modifying the engine?
To increase the amount of horsepower, sometimes you should simply improve the condition of the underwater part of the boat. Any formations that have concentrated on the bottom surface must be cleaned in a timely manner.
Do not ignore the workload of the interior of the vessel and the cockpit. How to increase the power of the outboard motor? To do this, it is recommended to remove all unnecessary things ashore that affect the increase in the total weight of the boat. Only the most necessary equipment should be left on board.
You should not save too much by adding oil to gasoline for an outboard engine. The use of low-quality combustible mixture will only reduce the number of horses.
One of the defining omissions on the part of the shipowner is the presence of chips on the blades of the engine. As practice shows, this leads to the fact that the fuel mixture is consumed in much larger volumes when reaching the desired speed.
Additionally, the pressure level in the cylinders should be estimated. The latter must be pumped with air before the appearance of a characteristic ringing. The need for the maximum filling of cylinders is due to a decrease in pressure when they cool in water. Oddly enough, this factor can also affect the deterioration of the performance of the craft.
Boosting the power of two-stroke boat engines
To increase power, it is worth carefully choosing oil for two-stroke outboard motors. Preference should be given to the products of proven, proven brands. Choosing expensive
oil for two-stroke outboard motors, you can get an increase in power by several horsepower.
In order to increase the parameter, it is recommended to work on the carburetor. After disassembling the structural element, it is necessary to increase the diameter of the diffuser, to correct the operation of the float fuel dispenser.
Increasing the power of two-stroke outboard motors contributes to the adjustment of the ignition angle. Here it is worth making settings aimed at easy advancing. This also implies the need to install new spark plugs.
Increasing the power of four-stroke outboard motors
Four-stroke engines are slightly more difficult to modify. To increase the power indicators, it is necessary to adjust the gaps of the valves of the gas distribution mechanism. In particular, the expansion of the latter makes it possible to significantly increase the flow of the fuel mixture.
If we talk about the most productive four-stroke outboard motors, to increase their power you will have to reflash the electronic unit. This solution allows you to remove a whole host of restrictions provided by the manufacturer. To cope with such work yourself is extremely difficult. Therefore, it is better for inexperienced shipowners to immediately contact the appropriate service for help.
Outboard motor Salute
According to the reviews of experienced shipowners, Salut engines are one of the most problematic outboard engines. However, despite this circumstance, owners of watercraft continue to trust such units because of their low cost and the wide availability of parts.
One of the main reasons why the Salut outboard motor is losing power is the concentration of water in the carburetor. Trouble can occur even while traveling on calm water in calm weather. The spray is sucked into the motor element, and the latter begins to stall. To fix the problem and, accordingly, increase the power of such an engine makes it possible to install a special nozzle on the diffuser, which will provide air to the carburetor through the "nose", which is directed away from the direction of movement of the vehicle.
In engines of the Salyut brand, the quality of the material for manufacturing the crankshaft is also desired. The use of a manufacturer of insufficiently reliable steel leads to rapid depletion and failure of the specified part. How to increase the power of the outboard motor? The elimination of the factor that affects the loss of horsepower, here can serve as the installation on the crankshaft of an additional sleeve made of brass. This solution will protect the functional element of the engine from corrosion and eliminate the ingress of water into the gas receiver.
Yamaha Motor
In such engines, even replacing the carburetor with more advanced options does not solve much. For improvement, it is recommended to remove the factory power limiter, as well as bend the valve petals in the throttle.
It should be noted that on Yamaha engines limiters are installed for environmental reasons. Many Western countries have strict laws regarding the amount of harmful emissions into the atmosphere. Therefore, the manufacturer simply has to resort to such a decision.
Suzuki engine
To increase the power indicators in the engines of the presented brand, it is worth resorting to cleaning the carburetor and collector, as well as replacing the gaskets between the indicated structural elements. The refinement procedure here is as follows:
- hoses and tubes that can interfere with work are carefully dismantled;
- the fasteners are removed that holds the carburetor;
- new gaskets are located in the right places;
- after dismantling the thermostat, the cooling system is cleaned;
- components are assembled in the reverse order.
Honda Motor
Boat engines of this brand have long established themselves as the most productive units. However, even here there is room for an increase in the number of horsepower. The following solutions contribute to increasing the power of Honda brand motors:
- timely, systematic maintenance;
- the engine air filter is in perfect condition;
- installation of a reliable device that is able to provide the most efficient passage of air;
- the use of high-quality additives for fuel (allows you to save fuel consumption of outboard motors).
Finally
Absolutely every outboard engine engine can be improved in order to increase power indicators. However, not all motors can be forced with ease. Sometimes such events seem too costly. Therefore, in order to avoid loss of time and effort, in some cases it is worth initially focusing on the purchase of an aggregate with the desired power.