Choosing a reliable outboard motor for a small vessel is a challenge that requires in-depth analysis of performance and operating conditions. The marine engine industry offers many solutions, but the marine engine industry has a lot to offer. Japanese-quality Traditionally, it has been the leader in trust ratings among boat and boat owners. Nissan Marine It has become synonymous with durability and economy, which is confirmed by many years of experience in using these units in the harsh conditions of the Far Eastern seas and rivers of Siberia.
The history of the brand is inextricably linked to Tohatsu Corporation, which is the actual manufacturer of equipment under the Nissan brand, which has combined advanced engineering in the field of engine building with time-tested design solutions for propellers. Nissan boat-engines They are often perceived as the benchmark of reliability in their class, especially when it comes to two-stroke and four-stroke models of medium power.
In the current review, we will analyze the current model range in detail, analyze the pricing policy and find out why these units remain in demand even in the secondary market. carburetor And electronic injection will help you make the right choice for your boat, whether it is a lightweight PVC boat or a full-fledged metal boat.
Brand history and connection to Tohatsu
Many potential buyers mistakenly believe that Nissan Marine is a separate production unit of the car giant. Tohatsu CorporationA strategic partnership that has been specializing in marine technology for more than 80 years has leveraged Nissan’s powerful dealer network to promote Tohatsu’s technically advanced products.
The main advantage of this collaboration was the unification of spare parts and maintenance. Nissan NS 9.8B You can be sure that you will find the right filters or spark plugs in most service centers specializing in Japanese technology, and Tohatsu engineers have implemented their best developments in these models, including the CDI electronic ignition system and an improved cooling system.
⚠️ Note: When ordering spare parts, always check the compatibility of catalog numbers, as the visual similarity with Tohatsu engines does not always guarantee the complete identity of the attachments and the lower unit.
It should be noted that the Nissan logo on the engine body is not just a marketing move, but a sign of compliance with the strict internal quality standards of Nissan Motor Co. Each batch of engines undergoes additional control before shipment to dealers. piston-group Even when using fuel of the highest quality, which is important for remote regions.
Two-stroke models: Lightness and traction
Two-stroke engines remain popular because of their simplicity, light weight and high specific power. In the Nissan Marine line, they are presented in models from 2 to 70 horsepower. The design of these engines involves mixing oil with gasoline, which provides excellent lubrication of rubbing parts and allows the unit to operate in any position, including full roll.
The low-power series, which is ideal for inflatable boats, has a built-in fuel tank and has extremely low vibration, and the 2.5 and 3.5 hp engines are more powerful, such as the one that is used in the engine. Nissan NS 9.8BThey already have a removable tank and a forced lubrication system, which significantly increases the engine life.
A key feature of Nissan’s two-stroke system is its exhaust gas treatment system, which reduces smoke and emissions toxicity, by the shape of the purge channels and fine-tuning the Mikuni carburetor. It is important for anglers that these engines allow for high speeds in shallow water without the risk of overheating.
- 🚀 High acceleration dynamics due to the absence of a valve mechanism and low weight of the structure.
- ⚓ The ability to transport in any position without the risk of oil leaking from the crankcase.
- 🔧 The simplicity of the design facilitates self-repair in the field.
- 💰 More affordable initial cost compared to four-stroke analogues.
To extend the life of a two-stroke engine, use only special oils labeled TC-W3 and follow the proportion of the mixture recommended by the manufacturer for the break-in period.
Four-stroke engines: economy and comfort
Four-stroke ruler Nissan Marine It's designed for users who value comfort, low noise and fuel efficiency, and it's powered by car engines, where the oil is in a separate crankcase and doesn't burn with the fuel, which makes it more environmentally friendly and enjoyable for people around you.
Technology TOYO (used in some modifications) and improved gas distribution system allow to reduce fuel consumption by 30-40% compared to two-stroke analogues of the same power. Nissan NS 9.8B 4T It consumes significantly less gasoline per kilometer, which is critical for long-distance crossings.
The important advantage of four-strokes is that you don't have to make a fuel mixture, you put pure gasoline in the tank, and the oil is controlled automatically through the probe, and this eliminates the human factor and the risk of jamming the engine because of the wrong proportion of the mixture, and these motors are more stable at low rpm, which is convenient for trolling fishing.
Why are four-strokes heavier?
Four-stroke engines have a more complex design with a valve mechanism (camshaft, pushers, valves) and a separate lubrication system, which increases their weight by 30-50% compared to two-strokes of the same power.
Despite the weight, engineers have managed to minimize the dimensions thanks to the compact layout of the units. The cooling system with the thermostat maintains optimal temperature conditions, preventing overheating during prolonged operation at low speeds, which makes the four-stroke Nissan ideal for use with hydraulic pumps and generators.
Technical specifications of popular models
When choosing a motor, you need to pay attention not only to power, but also to the gear ratio, screw pitch and control system. Nissan’s range of products covers a wide range of needs, from pleasure engines to powerful units for planing heavy boats.
Below is a comparison table of the specifications of popular models that most buyers are interested in. Data are relevant for standard short leg configurations (S), but modifications with a long leg (L) for keel boats are available.
| Model | Type of engine | Power (hp) | Weight (kg) | Launching system |
|---|---|---|---|---|
| Nissan NS 2.5 | two-stroke | 2.5 | 9.5 | manually |
| Nissan NS 9.8B | two-stroke | 9.8 | 36.0 | Manual/Electro |
| Nissan NS 9.8B 4T | four-stroke | 9.8 | 43.0 | Manual/Electro |
| Nissan NS 30 | two-stroke | 30 | 56.0 | Electro |
| Nissan NS 70 | two-stroke | 70 | 112.0 | Electro |
The management system deserves special mention. Remote Control For motors from 20 hp, it allows you to take the rumbler into the console or install a dashboard with a tachometer and a temperature indicator, which increases the ergonomics of the boat control and allows you to control the device. engine-work in real time.
Price policy and the market of used technology
The cost of new outboard motors Nissan Marine is based on the exchange rate, customs duties and logistics costs. Currently, the prices of new units in official dealerships can vary widely, for example, low-power models start from 60,000 rubles, while the top versions can cost several hundred thousand.
However, the secondary market offers more affordable alternatives: Nissan engines, while very reliable, are often sold after 5-7 years of operation in excellent condition. When buying used equipment, the state of lower unit for hitting stones and compression in the cylinders follows.
The average price of a used Nissan 9.8 hp engine in good condition is about 40-50% of the cost of a new one, which makes them an excellent choice for budget tuning boats.
Factors affecting the price:
- 📉 Year of release and general technical condition (working of the motor watch).
- 🛠 Availability of documents (PSM, service book) and configuration (screw, tank).
- 🌏 Sales region (in the coastal regions prices are traditionally lower due to logistics).
- 🔧 Replacements (new carburetor or electronics may increase the cost)
⚠️ Warning: When buying a motor with your hands, be sure to check the engine number for signs of interruption and check it with documents to avoid purchasing stolen property.
Maintenance and typical faults
Regular maintenance is the key to long service of your Nissan MarineThe manufacturer recommends that the oil be replaced in the gearbox after the first 10 hours of running, and then every 100 hours or once a season. Using the transmission oil of the correct viscosity will prevent gear wear.
In the power supply of two-stroke engines, it is associated with pollution of the carburetor. To prevent it, you need to use quality gasoline and add a fuel stabilizer if the engine is not used for a long time. Mikuni carburettor.
☑️ Seasonal engine maintenance
The CDI ignition system usually does not require intervention, but the candle gap and condition should be checked regularly. The candle ignition can tell you about the quality of the mixture: black loam indicates a rich mixture, white indicates a poor one.
For four-stroke models, timely engine oil replacement is critical, with replacement intervals of 50-100 hours depending on the load, and the air filter condition must be monitored, especially when operating in dusty conditions or on sandy shores.
How to properly preserve the engine for the winter?
For conservation, you need to drain fuel from the carburetor (or preserve it with a special liquid), replace oil in the gearbox and engine (for 4T), lubricate all moving parts and store the motor in a vertical position in a dry room.
Why does the engine stop at high speeds?
Most often this is due to a lack of fuel (filter clogged, hose bend) or a violation of the ventilation of the fuel tank, and also a malfunction of the ignition coil, which penetrates when heated.
Can I use a Nissan motor with a hydraulic pump?
Yes, many models, especially the four-stroke and two-stroke 9.9 hp, have a hydraulic pump connection, but additional equipment and crankshaft loading guidelines are required.