Owners of Soviet outboard motors of the series salute They often face the dilemma of throwing the old man into a landfill or giving him a second life. Despite their age, the two-stroke design of these units has enormous potential, which, if properly approached, can significantly improve traction performance and efficiency. Upgrade of the outboard motor This is not just a replacement of candles, but a set of engineering solutions aimed at eliminating factory shortcomings.
Many enthusiasts mistakenly believe that these engines are hopelessly outdated, but the correct configuration of the fuel supply system and improving the tightness of the crankcase work wonders. You can achieve a confident exit to planing even with a heavier boat than originally planned. Salut-M or Salut-2 c a reliable unit for cruising.
Before grasping at the tools, you need to carry out a complete defect of the nodes. Only an understanding of the current state of the parts will make it possible to draw up the right work plan and avoid buying an unnecessary "tuning" that will not give effect on the worn engine.
Diagnostics and preparation for tuning
The beginning of the work always lies through a thorough washing and visual inspection of all systems, you can't just start spinning the screws of the carburetor, if there are bullies in the cylinder and the oscillators are leaking air. Leakability of the crank chamber It's the foundation on which all the work of a two-stroke engine is built, and any leakiness causes the mixture to become impoverished and the piston group to overheat.
Special attention should be paid to the condition of the lower unit and the paddle shaft. If there are backlashes, then no power will help the boat to develop speed, since the energy will go to vibration and heating of the gearbox. Check the slits and the condition of the lower unit pipe for corrosion.
☑️ Checklist of primary diagnostics
To accurately assess the condition of the cylinder, use a nutrometer or at least carefully examine the mirror through a magnifying glass in good light. Small risks are acceptable, but deep furrows require rubbing or replacing the cylinder. Remember, upgrading a powerful engine with a worn piston will only lead to rapid overhaul.
⚠️ Warning: Before disassembling the engine, be sure to note the relative position of the crankcase halves and the rod. Assembly errors can lead to the destruction of the shaky-piston group at high revs.
Increased compression and refinement of the CNG
One of the most effective ways to increase power is to increase compression. Factory parameters are often underestimated for reasons of reliability and low-octane fuel. Reducing the volume of the combustion chamber is achieved by installing a thinner gasket under the cylinder or a cylinder head duct.
But blindly chasing high numbers is not worth it. Excessive compression on the fuel of the AI-92 (or mixture with oil) can cause detonation, which will destroy the piston in a matter of minutes. Salute The compression ratio is considered to be in the area of 8.5-9.0 units.
- 🔧 Cutting 1.5-2 mm of metal from the plane of the cylinder head on the lathe.
- 🔧 Installation of copper gasket of smaller thickness instead of regular paronite.
- 🔧 Polishing the bottom of the piston and the combustion chamber to improve heat transfer.
In parallel, it is recommended to polish the purging and exhaust channels, removing the injection molding and roughness, you improve the filling of the cylinder with fresh mixture and exhaust cleaning, this is especially important for two-strokes, where gas exchange depends on the flow rate.
Use a solid alloy drill to carefully treat the channels, and don't make the channels wider than the factory ones, because the walls are smooth, not widening.
Modernization of the ignition system
The standard contact ignition system (Magdino K-25) is one of the main brakes of the engine. Contacts burn out over time, the angle of ignition advance is lost, and the spark becomes weak. The transition to electronic contactless ignition (ELI) is impactful A change that you can make.
Electronic kits such as MBE-1 or modern analogues of Electron vortexThe slugs, adapted for the Salute, provide a stable spark of any power and at any speed, this guarantees a confident start in all weather and smooth engine operation throughout the range.
Installation of the HIPS requires care when mounting the sensor. The gap between the stator and the flywheel must be strictly verified, usually it is 0.3-0.4 mm. The magnets on the flywheel must pass at a minimum distance from the coil, but not touch it.
⚠️ Warning: When installing an electronic ignition, be sure to check the polarity of the connection. An error in connecting the wires can instantly disable the switch.
And then you have to check the condition of the high-voltage wires and caps, and you can get old wires to the mass, especially in wet weather, and you can replace them with low-resistance silicone wires, and you can transfer power to the candle.
Improvement of the carburetor and fuel system
carburetor K-33 Or the modifications that are installed on the Salute, they're very efficient, but they require fine tuning, and often the owners have to face failures when the throttle is opened abruptly, and this is solved by refining the accelerator pump and selecting the chicklers.
A forced motor may require an increase in the capacity of the main fuel jelly, but this must be done by a selection method, starting with an increase of 5-10% of the standard value, the re-enriched mixture will wash the oil from the cylinder walls and lead to bullies.
| Parameter | Status | Optimized | Impact |
|---|---|---|---|
| Head jeckel | 135-140 | 145-150 | Max. Power. |
| idle-clothing | 35-40 | 40-45 | Stability XXX |
| Level in float | 18-20 mm | 19-21 mm | Dynamics of acceleration |
| Needle gap | Medium. | Raised by 1 division | Average turnover |
It is important to ensure high-quality fuel filtration, and installing an additional fuel filter in front of the carburetor will save the jellyclera from getting garbage from the tank, and the purity of the fuel for the two-stroke engine is critical, because the oil channels are very narrow.
Improvement of lower unit and Spinning
The power generated in the cylinder must be efficiently transferred to water. The regular screws on the Salyut engines often have a large pitch, which prevents the engine from spinning to operating speeds under load. Replacing the screw with a lighter (with less pitch) or a rotor with variable pitch will allow the engine to go into optimal mode.
Also worth paying attention to is an anti-cavitational stove, which is that if it's too high or it's not the right shape, the screw will trap air, and sometimes it helps to put extra fins on the lower unit, which improves the flow of water to the screw.
- 🌊 Checking the beating of the propeller shaft (tolerance not exceeding 0.1 mm per 100 mm length).
- 🌊 Replacement of the oar shaft with modern cuffs with anthers.
- 🌊 Polishing the screw blades to reduce water resistance.
Lubrication of the gearbox should be carried out regularly, and the oil should be used specialized, for gearboxes. Conventional transmission oil can foam and work worse in conditions of high speeds of rotation of gears.
The secret to a quiet move
Quiet stroke often depends not only on the motor, but also on the condition of the lower unit pipe. Plugging the inside of the case of the lower unit vibratory material (Schumoff type) reduces the resonance of the metal and makes the engine work much quieter.
Set-up and running of the upgraded engine
Once all the components are assembled, the most important step is the adjustment, the carburetor must be adjusted on the warmed-up engine, the quality of the mixture is idled, then the transition mode and maximum speed are checked.
The color of the spark plug will tell you more about the composition of the mixture than any appliance. Brick-brown coating indicates the optimal mixture. White coating is poor (risk of overheating), black and velvety – rich (fuel overrun and soot).
Running the upgraded engine is mandatory, even if the piston is already worn. New ignition and power settings change the temperature regime. The first 2-3 tanks of gasoline should be worked out in a gentle mode, without opening the throttle more than 70%.
⚠️ Attention: During the break-in, constantly monitor the temperature of the cylinder head with your hand. If you notice signs of overheating (hisping of water, loss of power), immediately turn off the gas and check the cooling system.
Remember that any tuning requires subsequent adjustments. After 5-10 hours, stretch the mounting bolts of the cylinder head and crankcase, as new gaskets could "sit down." Regular maintenance will prolong the life of your updated Salute for many years.
Competent modernization of the Salute allows you to increase power by 15-20% and reduce fuel consumption, but requires accuracy in settings and quality spare parts.
FAQ: Frequently asked questions
Should I rub the cylinder of the Salute under a piston from another engine?
Piston-sweeping vortex or Moscow It's possible, but it requires a lot of engineering, and you have to take into account the height of the piston, the location of the beans, and the stroke of the piston, and it's easier and more reliable to find a repair-sized native piston or a quality one.
What gasoline is best used for a tuning salute?
For a forced engine with a high compression ratio, it is recommended to use AI-95 gasoline with a high-quality two-stroke oil in a ratio of 1:25 or 1:30 (depending on the oil recommendation). The use of AI-92 is possible, but only with a careful adjustment of the ignition advance angle.
Should the cooling system be changed during the upgrade?
A regular pump usually works if it's working, but if you've raised the power significantly, you should clear all the water channels of scale and make sure the rubber pipes don't lose their elasticity.