Legendary Wind 8 It remains one of the most talked-about outboard motors in the history of domestic boating sports and amateur fishing. Despite the fact that mass production of this model has ceased, thousands of copies still ply the expanses of Russian rivers and lakes, causing polar emotions in their owners, some call it an unkillable classic, others – a headache that requires constant attention.
In this article, we will analyze in detail the technical specifications that made this two-stroke engine a popular favorite, and analyze the real ones. reviewsYou will learn why this engine weighing only 26 kg is able to accelerate the boat to 25 km / h and what hidden problems can come up when buying a used copy.
Objectivity is the main principle of our review: we will not idealize the Soviet heritage, but we will not be mindlessly critical. UMKO-8 (this is the so-called series) will allow you to make an informed decision about the purchase or competently reanimate the existing unit.
Technical specifications and design features
At the heart of the unit is a two-stroke internal combustion engine with crank-chamber purges. The cylinder capacity is 122 cubic centimeters, which, when properly adjusted, allows you to remove power of 8 horsepower. The design provides two cylinders located vertically, which provides relatively compact dimensions compared to inline counterparts of the era.
The ignition system may have been different in different years of production. magdin Later versions, especially those released in the 90s, often featured an electronic ignition system, which greatly improved the reliability of the launch and the stability of the high-speed operation.
Modifications of the Windy 8 engine
The lineup included versions of the Windy 8M (upgraded) and the Windy 8ME (electronic ignition) versions, and there were also export versions with a modified gear ratio for working with heavier boats.
The engine is cooled by off-shore water through a pump integrated into lower unit. lower unit It is made of light alloys, but anti-corrosion protection on older models often left much to be desired, which led to rapid oxidation of external surfaces when used in salt water.
real owner reviews: pros and cons of operation
Analysis of powerboating forums and specialized groups highlights the key advantages and disadvantages that users face in real-world settings, ranging from enthusiastic to sharply critical, depending largely on the technical condition of the particular instance.
The owners attribute the maintenance and availability of spare parts to the undoubted advantages: the engine can be repaired on the knee with a minimum set of tools, and many components are interchangeable with other models of the Ulyanovsk Motor Plant. In addition, the engine calmly digests low-quality gasoline, which is critical for remote fishing.
- 🚤 High thrust at low revs, allowing you to confidently lead a heavy PVC boat against the current.
- 🔧 Simple design, understandable even to beginners in mechanics, which facilitates self-maintenance.
- 💰 Low cost of ownership and cheapness of consumables compared to modern Chinese counterparts.
But there's a downside to this, and many people complain about the high levels of noise and vibration, especially when they're idling. Vibration. It can lead to a gradual weakening of fasteners, so regular stretching of threaded joints becomes a mandatory ritual for each owner.
Fuel consumption and dynamic performance
Economics is a relative concept for two-stroke engines, but Wind 8 This shows itself in an interesting way: at full load and at maximum speed, the consumption of the gasoline-oil mixture can reach 3-3.5 liters per hour, but at a cruising speed of about 70-80% of the maximum, the consumption decreases to a comfortable 2-2.2 liters.
Dynamics acceleration directly depends on the weight of the boat and load. On a light inflatable boat with one angler, the engine is able to reach speeds up to 25-27 km / h If you load the metal "Kazanka" with three passengers and equipment, the speed will drop to 15-18 km / h, which, however, is quite enough for safe movement in the water area.
Use AI-92 or AI-95 gasoline with a quality two-stroke oil in a ratio of 1:25 (for running) or 1:50 (for standard operation) to extend the life of the piston group.
It is important to note that the real indicators depend on the state of carburetor Contaminated jelly or improperly adjusting the fuel level in the float chamber can increase the flow rate by 20-30% and cause power loss.
Instructions for first start and break-in
If you get the motor after storage or major repairs, the break-in procedure is critical, and ignoring this stage will lead to bullies in the cylinders and rapid failure of the rod bearings, the process is in no hurry and requires strict adherence to time intervals.
Before starting, make sure that the lower unit is submerged at least 15-20 cm in water to avoid the pump overheating. Mix the fuel with the oil in a separate container, shake thoroughly and pour into the tank. Open the fuel faucet and press the pump several times until you feel resistance.
☑️ Preparation for breaking in
Starting is as follows: move the handle of the rummel to the position "Start", stretch the handle of the starter to the end and sharply pull. After warming up for 3-5 minutes at idle speeds, you can start moving. The first 10 hours are not recommended to open the throttle more than 50-60%.
⚠️ Attention: Never start the engine on land without external water supply to the cooling system. Even short-term dry work is guaranteed to deform the impeller pump and overheat the lower unit.
Table of the main technical parameters
For ease of comparison and assessment of the technical condition of your unit, below is a summary table with the model data-sheet figures, deviations from these values may indicate the need for adjustment or repair.
| Parameter | Meaning | Unit of measurement |
|---|---|---|
| Power | 8 | hp |
| Workload | 122 | cube |
| Weight. | 26 | kilogram |
| Tank volume | 12 | litter |
| Max. screw diameter. | 230 | mm |
The weight of the engine in 26 kg makes it relatively easy to install on a transom, however, when transporting in the trunk of the car, it is recommended to use special covers so as not to stain the cabin with the residues of oil and fuel.
Typical malfunctions and methods of their elimination
Owners often face a number of common problems during operation, and knowing what causes them can quickly fix a problem right on the shore of a reservoir, and the most common problem is difficulty starting or idling.
The fuel supply system is the most common culprit, and idling jellier clogging or leaky crankshaft glands causes air suction. spark plug: black plaque will indicate a rich mixture, and white - poor or overheating.
- 🔥 Ignition misses are often caused by a breakdown of high-voltage wires or a faulty switch.
- 💨 Loss of power at high revs can be a consequence of overgrown exhaust windows with soot.
- 🌡️ Overheating is usually associated with the breakage of the impeller pump or clogging of the water intake hole with debris.
⚠️ Attention: If you knock at the bottom of the engine, immediately turn off the engine. Continuing work can lead to the twisting of the rod liners and the costly destruction of the crank-shaking mechanism.
90% of problems with the start of Wind 8 are solved by cleaning the carburetor and checking the compression, which should be at least 7-8 atmospheres.
Frequently Asked Questions (FAQ)
Which gasoline is best used for wind 8?
The best choice is the AI-92 gasoline. The AI-76 (if you can find it) is possible, but it will require an earlier ignition angle, which is not always convenient to adjust. AI-95 is acceptable, but you will not notice the difference in power, and the cost is higher.
Which oil is better to pour into the mixture?
It is recommended to use specialized oils for two-stroke engines labeled TC-W3. Mineral oils are cheaper, but form more sodium. Semi-synthetics is the middle ground for price and quality of lubrication.
Can I put Wind 8 on a PVC boat?
Yes, it can. The weight of the engine allows you to install it on dense PVC boats with a hard or inflatable transom, but for comfortable operation, the boat must be at least 3.2 meters long, otherwise there is a risk of splashing the engine with a wave from the screw.
Where can I find the parts for this engine?
Thanks to the huge circulation, spare parts (pistons, rings, gaskets, carburetors) are widely available in boating stores and on various online sites. Many parts are suitable from other models of the Wind series.