The modern market of water technology offers many solutions, but Hi, 22. The engine, which was built in the Soviet Union, has been traversing rivers and lakes for decades, proving its reliability in the harshest conditions of operation. Despite its age, interest in the model has not faded, and its collectible value and practical application are gaining new fans among fans of retro equipment and budget fishing.
In this article, we will discuss in detail the device, features of service and the possibility of upgrading this two-stroke unit. Hey, 22. You can still see in the working order what weaknesses it has and how to extend the life of a machine that's already seen, and understanding how it works will help you avoid the typical errors in operation and maintenance.
It is worth noting that 22 horsepower It was a pretty impressive figure for its time, allowing you to glid quite heavy boats like Kazanka or Crimea, and today it's seen as more of a historical artifact or a budget solution for leisurely walks, but its engineering simplicity is respectable, and we'll look at how to adapt this technique to modern realities and fuel.
History of creation and design features
Development Motor Hi 22. The main goal of the engineers was to create a reliable, maintainable engine that could run on affordable gasoline and withstand long loads, based on proven solutions, which ensured high survivability of the units even in the absence of qualified service.
The key element is a two-stroke internal combustion engine with crank-chamber purge, which allows you to achieve high specific power with minimal weight. Ignition system Originally, the magdinos were complete, which did not require an external power source, which made the engine fully autonomous. Later modifications and restorations often introduce electronic ignition to improve the stability of spark formation.
⚠️ Note: When operating antique engines, it is strictly not recommended to use pure gasoline without adding oil, since this will lead to instantaneous bullying of the piston group due to the lack of lubrication of rubbing surfaces.
A feature of the design is the vertical location of the cylinder and the use of a lower unit pipe to transfer torque to the propeller. Cooling system It's a flow-based solution, where water is taken from a body of water and circulated around a cylinder shirt, and it's a simple but effective solution that requires regular cleaning of water channels from sand and algae, especially when used in shallow or overgrown areas.
Technical specifications of the engine
To fully understand the capabilities of the unit, you need to consider its data-sheet figures. Motor Hi 22. It has parameters that were once considered advanced. The engine displacement is 346 cubic centimeters, which at a crankshaft rotation rate of about 4500-5000 rpm allows you to develop the declared power.
Below is a table with the main technical specifications that will help you compare this engine with modern analogues or assess its condition when buying used equipment:
| Parameter | Meaning | Note |
|---|---|---|
| Power | 22 hp. | On the ramparts |
| Workload | 346 cm | One cylinder. |
| Fuel consumption | 12 l/h | Full speed. |
| Weight. | about 44 kg | No fuel. |
| Type of fuel | A-76/A-80+ butter | Proportion 1:25 |
It is important to take into account that the real indicators may differ from passport ones depending on the condition of the piston group and the setting of the carburetor. Specific fuel consumption Two-stroke engines are traditionally higher than four-stroke engines, so the range should be planned with this in mind, and the weight of 44 kg makes the engine relatively heavy for attachment to light inflatable boats, but quite acceptable for metal and wooden cases.
The transmission system includes a single-stage gearbox with a gear ratio that provides optimal traction on the propeller. The propeller It is usually about 230 mm in diameter and a pitch designed to work under standard conditions, and if the screw is damaged, it is easy to replace it, since the design of the tailing is standardized.
Maintenance and regular maintenance
Durability Motor Hi 22. The owner should clearly understand that two-stroke equipment does not forgive neglecting the lubrication and quality of the fuel mixture, the main attention should be paid to the condition of the piston group and tightness of the crankcase.
Regular maintenance includes the following mandatory procedures:
- 🔧 Checking and replacing spark plugs, cleaning the coke from the electrodes for stable spark formation.
- 💧 Washing of the cooling system from scale and salt deposits, especially after operation in salt water.
- ⚙️ Lubrication of bearings of the crankshaft and gearbox through special oils or by replacing the lubricant in the gearbox.
- 🔩 Check tightening of fasteners, as engine vibration can weaken connections.
Special attention is required carburetorOver time, the float chamber can accumulate tar deposits from old fuel, leading to unstable idling or increased consumption of gasoline. Cleaning jelly and adjusting the fuel level in the float chamber is a skill that every owner of this engine must master.
☑️ Seasonal engine maintenance
In preparation for winter storage, the cooling system must be completely drained to avoid breaking the cylinder block when water freezes. Engine conservation It also involves the treatment of external surfaces with anticorrosive compositions, since moisture and salt mist quickly destroy the paint coating and metal.
Typical faults and repair methods
Despite the reliability, Hi, 22.Like any machine, it is prone to breakdowns, and the most common problem is loss of compression, which can be caused by wear on piston rings or cylinder damage, with symptoms such as difficulty starting, loss of power and the characteristic sound of the engine.
⚠️ Warning: Operation of the engine with signs of knocking or knocking in the cylinder can lead to the destruction of the shaky-piston group and jamming of the engine, which will require major repairs.
Another common malfunction is the leakproofness of the crankshaft coils, which causes the air to be sucked into the crank chamber, which impoverishes the mixture and causes the piston to overheat. Replacement of galls requires dismantling of the crankcase, so when oil leaks appear in the lower part of the engine, diagnostics should be immediately carried out.
Problems with the ignition system are also not uncommon, especially if the standard magdinos are retained. Breaking the insulation of high-voltage wires or breaking the capacitor can make starting impossible. Many owners are switching to modern electronic ignition systems (for example, from vortex or Neptune), which significantly improves the reliability of the launch.
How to check compression without a compressometer?
Cover the candle hole with your finger and pull the starter cord sharply. If the finger is knocked out by a strong airflow, compression is available. Accurate measurements are only possible with an instrument, the norm for Hello 22 - 6-8 atm.
Repair gearbox is usually required when water enters the body through a damaged paddle shaft oal. Emulsified oil (the color "coffee with milk") signals the need to replace seals. Ignoring this fact will lead to corrosion of gears and bearings, which can lead to jamming of the screw at full speed.
Tuning and modernization of the engine
For many enthusiasts Hi, 22. It's becoming a subject of technical creativity. The most popular type of upgrade is the electronic ignition system, which eliminates the problems with interrupter contacts, makes the spark more powerful and stable at all speeds, and also makes it easier to start the engine.
Another area of tuning is the refinement of the exhaust system, the installation of a resonant muffler or the modernization of the exhaust tract allows you to reduce noise and reduce exhaust smoke, which is especially important for comfortable fishing. Customization of the carburettor using jelly-creams of increased cross-section can add a few percent power, but will require careful debugging.
Some craftsmen are experimenting with the shape of the petal valve at the inlet, replacing it with more efficient options, which improves the filling of the cylinder with a fuel-air mixture at high speeds. However, such interventions require a deep knowledge of two-stroke engines, because improper adjustment can lead to the opposite effect.
When installing an electronic ignition, be sure to use high-voltage silicone-insulated wires to avoid breaking the spark to the mass in wet weather.
Excessive forcing of an old engine can reduce its life. Balancing The crankshaft after any interference with the crankshaft mechanism is a mandatory procedure to reduce vibration.
Comparison with modern analogues
In the current context Hi, 22. It looks archaic compared to the Chinese two-stroke or Japanese four-strokes, lack of oil lubrication (mixing required), high noise and vibration levels, and increased exhaust toxicity are its weaknesses, but its maintainability and low cost of parts put it in a favorable position for the budget segment.
Modern motors of the same power weigh considerably less and have better control. Hey, 22. It has a safety margin that many disposable modern models will envy: its cast iron and steel components are less susceptible to corrosion when properly maintained than silumine of cheap counterparts.
If we consider the motor as an investment or a means of survival away from civilization, then the simplicity of the design is the most important. Hey. It's a great advantage of the sophisticated electronics of modern engines, and it can be repaired on the knee with a minimal set of tools, which is critical for long-distance expeditions.
The choice between a retro motor and modern appliances depends on your priorities: comfort and environmental friendliness versus maintainability and nostalgia.
Frequently Asked Questions (FAQ)
What is the best fuel for the engine?
The best choice would be an AI-92 or an AI-95 gasoline with an octane number close to the calculated one, but using high-octane fuel requires adjusting the ignition angle or selecting candles with a different potassium number to avoid overheating.
Where can I find spare parts for repairs?
Spare parts for Motor Hi 22. Many parts, such as pistons, rings and glands, can be compatible with other Soviet motorcycles (such as Izh or Voskhod motorcycles), making it easier to find.
Can I install the engine on an inflatable boat?
Theoretically, you can, if the transom of the boat can withstand a weight of 44 kg and a power of 22 hp, however, for light inflatable boats, this power can be excessive and dangerous. It is recommended to use this engine with PVC boats from 3.6 meters in length or with rigid inflatable models (NSVC).
Why does the engine smoke and smoke candles?
Plenty of smoke and candles indicate an incorrect proportion of oil in the fuel (too much oil) or a malfunction of the carburetor (re-enriched mixture), and the cause may be wear of piston rings when oil from the crankcase enters the combustion chamber.