How much oil should be poured into the engine of a Ural motorcycle?

Ural is a family of Soviet and Russian-made motorcycles that belong to the heavy class. All products are manufactured at the Irbit motorcycle plant. The most popular modifications are those with a stroller. There are models with a drive to the stroller wheel, as well as without a drive. The Ural family is the successor to the M-72 motorcycle. The first model is considered to be the IMZ-M-72 from 1940, which is a copy of the German BMW R71.

The Soviet motorcycle was repeatedly modernized and produced until 1961. The latest updated version features short-link forks and new wheel hubs made from aluminum. In 2013, some of the latest Ural models were produced: both with and without a sidecar. Among the first we highlight Ural-T, Tourist, Patrol 2WD, Gear UP and Retro. Without a stroller – Retro Solo and Solo sT. In fact, these were the most modern Ural motorcycles, equipped with a 0.75 liter 4-stroke boxer engine with a power of 41 hp. With.

Reasons for popularity

The main share of motorcycles produced by this brand is exported. Only 3% of the total output remains in Russia. The reason for such a small “remainder” is due to the cost of the bike. It is approximately equal to the price of a good car, albeit not new, but in decent condition.

In recent years, the demand for this bike abroad has become simply record-breaking. Therefore, it was reconstructed. Component parts come from abroad, and assembly is carried out in Russia.

During the year, the plant produces about 1000 motorcycles. Moreover, all of them are sold in advance according to individual orders. "Ural" is popular in many countries. It can be found in Canada, Australia, USA, Europe.

Brand popularity

Although Ural is found everywhere in the Russian Federation, a large number of manufactured mopeds are sold to other countries. Only three percent of the total volume remains in Russia.

This is due to the considerable cost of the motorcycle. For the same price it is possible to purchase a used car of excellent quality.

Realizing that this bike was very popular abroad, I decided to reconstruct it, started buying spare parts abroad, and carrying out the assembly in the Russian Federation.

About a thousand bikes are produced annually and are already sold in advance. It’s hard to imagine which countries they drive on.

"Ural" is made on the basis of military bikes "BMW R71". They were produced by the Germans in the forties of the last century. The first “Ural” was manufactured during the Second World War and had additional devices that distinguished it from German motorcycles.

To make the army more maneuverable and mobile, Iraq purchased many bikes from the Russian Federation. They were equipped with additional channels, machine guns and flamethrowers. It was after the Iraq war that America began to become interested in these bikes.

Advantages of the Urals

Diagram of the oil flow in the engine of the Ural motorcycle.
The more than 70-year history of Ural motorcycles speaks for itself. These bikes are powerful, smooth and fast, and are as fast as a car. In addition, manufacturers are positioning this vehicle as a “motorcycle with a masculine character” - just as tough, straight and reliable. The enormous popularity of the model around the world is based primarily on confidence in its endurance and maneuverability, and its speed and technical characteristics are admirable. In addition, the manufacturer with enviable consistency modernizes the motorcycle again and again, improving its qualities.

The main technical component of the bike is the engine, on the operation of which the movement of the entire motorcycle depends. Each copy is accompanied by instructions for use, which indicate the type of engine and recommended types of lubricants. According to the instructions, the Ural motorcycle has a combined engine, that is, lubrication of the rubbing parts is carried out in two ways - the parts are lubricated from the oil pump and by splashing oil, and there is a strict lubrication procedure that cannot be violated.

Since the engines in modern Urals are mainly four-stroke, the oil must be selected accordingly. You can read about what kind of oil to pour into a Ural motorcycle in the same instructions. You should not put car oils into your bike, because they have different characteristics. Every world-famous oil manufacturer also has a lubricant in its lineup designed specifically for motorcycles. At the same time, there are no designations and classifications of lubricants for motorcycles, so they are labeled in the same way as automobile ones. Depending on the operating conditions, the oil is selected primarily according to the weather season. These can be summer, winter or all-season lubricants, and each of them has its own characteristics.

Specifications

The engine of the Ural motorcycle was constantly modernized during the production process and its latest modification (2015) has technical characteristics of a modern level.

INDICATORVALUE

Description

The Ural motorcycle engine is a two-cylinder, four-stroke, air-cooled power unit. It is equipped with an electronic fuel injection system (injector) developed by the engineering company ElectroJet Inc.

The main power element of the motor housing is the crankcase. Structurally, it consists of:

• the crankcase itself;
• distribution box covers;
• front and rear bearing housings;
• pallet;
• front cover.

The crankcase is cast from high-strength aluminum alloy. Pistons and the junction box cover are also made from it. The cylinders that are installed in the crankcase are cast from special cast iron, which has increased strength.

Their internal surfaces are honed before installation, bringing the surface cleanliness to almost a “mirror state”.

The materials from which the pistons and cylinders are made during operation form a good anti-friction pair that is not subject to severe wear.

In addition to the parts of the cylinder-piston group, a crank mechanism, a gas distribution mechanism, etc. are installed inside the crankcase and on its outer walls. In this case:

• the camshaft is installed in the upper part of the crankcase on bearing supports, and the pushers are located on its two sides;
• the junction box cover is attached to the front wall;
• the oil filler neck with a plug equipped with a dipstick is located on the left wall;
• the crankshaft is mounted on main bearings installed in the walls;
• From below, the crankcase is closed with a special steel pan, which is used as a reservoir with engine oil.

The assembled engine is installed on the motorcycle frame and secured to it with two studs.

Like any vehicle, motorcycle engines require regular maintenance. Procedures related to routine maintenance are recommended to be carried out after 2 thousand kilometers.

The list of work that must be carried out during maintenance of K-750 type motors includes:

1. Check and, if necessary, adjust the valve clearances of the gas distribution mechanism.
2. Replacing engine oil and oil filter.
3. Checking the condition of the spark plugs.

There are still a certain number of motorcycles in operation with engines equipped with K-37A, K-52, etc. carburetors. If the motorcycle engine has one of these carburetors, then during maintenance it must also be checked and, if necessary, adjusted.

Malfunctions

One of the features of the power units of Ural motorcycles is the relatively frequent occurrence of minor faults, which must be eliminated quite quickly. Delaying repairs can, and usually does, lead to more serious damage and a significant increase in the cost of repairing them. The main malfunctions and the reasons for their occurrence are summarized in the table.

MALFUNCTION CAUSE OF APPEARANCE

Tuning

The opposed two-cylinder engine of the Ural motorcycle has great potential for technical tuning. However, it is recommended to carry out this process only on a new or well-repaired engine.

In addition, its completion should be entrusted only to highly qualified specialists with experience in carrying out such work. This is due to the fact that the process of increasing power affects almost all engine components.

So the following needs to be modified:

• cylinder heads;
• camshaft;
• pistons and cylinders;
• fuel supply system;
• ignition system;
• crankshaft and flywheel.

Having completed the entire scope of work, you can achieve a significant increase in engine power, however, it should be noted that this significantly increases fuel consumption and reduces engine life. Therefore, such tuning is recommended only if the motorcycle is intended to participate in sports competitions. It is not advisable to use it for any other purpose.

Ural motorcycle engine - how much oil to fill

Ural Wolf IMZ-8.1238/7

Ural Wolf IMZ-8.1238/7 is the first chopper produced in Russia. Produced from 1998 to 2011. It is based on the Ural Cobra motorcycle. Among the innovations are other shock absorbers. In 2000, during the presentation, this model received praise from the top officials of the state. The motorcycle is equipped with a 745 cc 4-stroke engine with two cylinders. Acceleration time to 100 km/h is 10 seconds, and fuel consumption is 5.5 liters per 100 km. The developers managed to achieve good dynamics and maneuverability thanks to tapered roller bearings. In addition, the ignition is equipped with a Ducati microprocessor, a Yuasa battery, and a 500-watt Denso generator. Among the ergonomic conveniences, we note a paired speedometer indicating the speed and kilometers traveled. The engine works with an improved 4-speed gearbox.

How to change oil on MT and its maintenance.

Recommend oil for a URAL motorcycle - Choosing engine oil - Forum.

Page 1 of 2 – Recommend oil for the URAL motorcycle – sent to Choice. Tell me what kind of oil is better to fill in the engine and how much is included? . I wanted to fill the engine with synthetics, Lukoil, etc.

What kind of oil to pour? – Forum of the site motorcycle Ural and Dnepr

Fill the engine with diesel, you'll save a lot, and don't hesitate to buy transmission oil for the gearbox and gearbox - these units need oil.

What are the filling volumes of the crankcase/box/axle/shock absorbers/forks, etc. on [. ]?

Important points: you need to measure the oil with a dipstick with the plug unscrewed! Those. unscrewed, wiped, inserted, took out, look into the box Uralov IMZ insistently recommends filling with engine oil. Engine oil must be type 20W50 SAE, mineral. Transmission oil is poured into the gearbox. M8 is not an oil, don’t be mistaken about that. It is suitable for lubricating door and window hinges, but it should not be poured into the engine or gearbox. M8 is mentioned in the Guide because there was no other one before. Don't ruin your equipment.

With an enlarged sump, the crankcase capacity naturally increases

According to the table: Shock absorber capacity for models for which it was not specified is 0.105 liters. (oil MGP-10 or I-12A) Fork leg capacity for models for which it was not specified is 0.135 l. (engine oil)

Pros of a motorcycle

The more than seventy-year history of Ural bikes speaks volumes. These motorcycles are powerful, ride smoothly and quickly thanks to a powerful engine.

The prevalence of the Ural all over the world is due, first of all, to its excellent performance indicators.

In addition, the manufacturer is constantly making various improvements to the motorcycle engine, improving the bike.

The main unit of the Ural is considered to be the power unit. The ability to drive depends on its functioning. Each motorcycle comes with an instruction manual. It specifies the type and size of the engine, and also indicates what oil it runs on.

According to the manual, the bike has a combined engine. Lubrication of contacting parts is carried out by 2 methods: from the oil pump or by spraying engine oil.

Manufacturer's approvals

What kind of oil should be used for a Ural motorcycle? The manufacturer recommends filling with M8B1 lubricant. For early models from 1970 to 1990, the liquid is 100% suitable. However, servicing of power units of later production occurs with semi-synthetic or mineral lubricants.

It is also necessary to take into account that after modification, tuning of the piston group of the power plant. Atelier experts recommend using exclusively semi-synthetic lubricants. This minimizes wear on the surfaces of components not installed on the factory assembly line.

Thus, the manufacturer does not take into account API, ILSAC, ACEA standards. These minimum specifications exceed engine requirements. The design features of the modification are tailored to primitive lubricants produced back in the mid-20th century.

The only relevant certification is the SAE specification.

For the summer period, it is recommended to fill the Urals with SAE W40/W50 oil. These parameters are sufficient to create the optimal thickness of the protective film.

The final choice is based on the temperature limit of the motorcycle's use.

For winter, users use SAE 10W/20W fluids. Driving at air temperatures less than -15 degrees Celsius is difficult. Therefore, oil in the Urals is selected according to minimum operating temperatures.

All-season approvals

Year-round use is not news for domestic users. For normal operation, the Ural motorcycle engine requires 10W40/20W50 class fluid. The viscosity index must also be taken into account. Usually an extremely high indicator is selected.

Changing the oil in a Ural motorcycle box

The principle of servicing the box is the same as for an internal combustion engine. You need to place a waste container under the drain plug. Then unscrew the plug and let the liquid drain (the process takes about 15 minutes). When the waste stops flowing, tighten the drain plug and add a new transmission into the filler hole.

The iron horses of this manufacturer are reliable and durable, but the need for maintenance cannot be ignored

pedestrian Thu, 02/19/2009 — 13:05

Focus, (https://www.liquimoly.ru/components/), (https://liquimoly.ru/catalog2008/Hochleistungs-Getriebeoil_(GL-4-GL-5)__75W-90.html), read here) ), and also add (https://liquimoly.ru/catalog2008/Getriebeoil-Additiv.html) I recommend)) What is the difference between gear oil with the API designation GL-4 and GL-5?

Answer: The API designation of a specific oil helps the consumer choose the right gear oil for their vehicle. Currently, the accepted API marking includes 5 GL categories: GL-1, GL-2, GL-3, GL-4, GL-5, respectively. There is also a category GL-6 or MT-1, but it is not widely used in Europe. An increase in the GL index means an increase in the load on the structural elements of the gearbox and differential and, accordingly, an increase in the number of additives that provide wear protection. Oil with the lowest category GL-1 is intended for non-synchronized gearboxes with light loads and is typically used in certain types of trucks. GL-2 oils belong to the category of industrial gear oils and are widely used in vehicles with classification according to API GL-4 and GL-5. Their main difference, as already mentioned, is the number of additives: GL-5 has more of them than GL-4. Since additives are chemical compounds of sulfur and phosphorus that are aggressive towards copper alloys, GL-5 oil can cause corrosion of structural elements of the box, in particular synchronizers designed for the use of GL-4 oil, and vice versa, the use of GL-4 oil instead recommended GL-5 will cause rapid gear wear. Therefore, every manufacturer of transmissions and gearboxes must indicate which API-classified oil must be used and you should not neglect their recommendations - this may in the future threaten the repair of an expensive unit. It is worth noting that many manufacturers produce oils with dual API classifications. For example, Liqui Moly produces semi-synthetic oil Hypoid Getribeoil SAE 75W-90 TDL with classification GL-4/5. This means that the oil can be used for transmissions and differentials requiring both GL-4 and GL-5 oils.

Weak motor

It has become popular, at the same time, and expensive to have a high-quality and powerful motorcycle from well-known global suppliers. But our Ural motorcycle is not far from foreign motorcycles; if you look at the prices, you’ll go crazy, the price is like a car.

Therefore, new Urals are rarely bought on the domestic market, although they are supplied to the Armed Forces of the Russian Federation and other law enforcement agencies, but abroad they are in, albeit small, but definite demand.

103-30, M-67-36), are there any shortcomings and weak points? After all, it is the qualities and characteristics of the engine that underlie the characteristics of the Ural motorcycle.

Characteristics of engines of modifications of Ural motorcycles

Characteristics of transmissions of Ural motorcycle modifications

Filling volumes of gasoline and oils for modifications of Ural motorcycles, in liters

• Foot starter (kickstarter);
• Gas and clutch cables;
• Generator;
• Carburetors;
• Cylinder heads;
• Reverse gear (gearbox).

More details about the weak points of the motor...

Foot starter (kickstarter)

The foot starter of the IMZ-8.103-10 engine is a weak point due to the slippage of the pawl.

The malfunction is eliminated after dismantling the gearbox and disassembling it with rearranging the pawl with the other side or replacing it. I have an assumption that the metal of the dog is of low hardness.

On the other hand, if the pawl is made harder, the gear will fail. You need to choose the golden mean.

Throttle and clutch cables

The clutch control and fuel supply cables are a weak point due to their short service life. To put it simply, they tear, and before that they stretch, which makes it necessary to adjust the timing of the supply of the fuel mixture, as well as the clutch.

Generator

The generator does not run for a long time.

Carburetors

Gasoline gets into the floats, after which the cylinder is filled with gasoline. In addition, carburetors are not matched to these engines; half of the fuel goes to waste, which is not economical. It would be nice if the engine had one carburetor instead of two.

Cylinder heads

Do not overtighten the spark plug heads; the threads break off quite easily. You cannot overheat the engine, the result will be clearly visible on the heads, the studs are pulled out, leading to the landing plane of the heads.

If you are unable to avoid breaking the spark plug thread, contact a familiar turner; he will be happy to repair it and install a steel threaded bushing for a modest fee. I can recommend the same for wear of valve seats and chamfers.

It is much cheaper to repair heads than to buy new ones; a good turner can do this in no time.

Reverse gear (gearbox)

The reverse gear does not work for a long time due to the rapid wear of the reverse gear in the gearbox.

• Small resource;
• Starting is difficult or does not start at all;
• In hot weather, it gets very hot in low gears;
• Interruptions in the operation of the cylinders;
• Knocking;
• High fuel consumption;
• There are a sufficient number of cases of inaccuracy in the manufacture of the engine crankcase at the cylinder mounting points;
• Oil is leaking at the joints.

More details about the disadvantages...

Small resource

Unlike engines of analogue imported motorcycles, the service life of the IMZ-8.103-10 engine before repair is small, from 20 to 45 thousand km, which is explained by increased wear of the crank and piston group parts. Increased wear is a consequence of insufficient air cooling, as well as not very good quality of parts (material, manufacturing accuracy).

Difficulty starting or won't start at all

For the most part, starting the IMZ-8.103-10 engine is difficult when the ignition, fuel supply and clearances in the valves of the gas distribution mechanism (between the rods and rocker arms) are not adjusted.

The reason may be reduced compression in the cylinders, clogged carburetor jets, water in the carburetors, spark plugs not working, a failed condenser, a lean mixture of fuel coming from the carburetors (too much fuel).

In hot weather it gets very hot in low gears

Interruptions in cylinder operation

To a greater extent, interruptions in the operation of the cylinders are caused by the lack of synchronous operation of the cylinders due to different amounts of the supplied combustible mixture, and by a violation in the adjustment of the valves.

Knocking

The cause of engine knocking may be: pre-ignition; overheat; wear of pistons, rings, fingers; wear of the crankshaft main bearings; valve adjustment is incorrect.

High fuel consumption

Carburetors are simple and uneconomical, the consumption even according to the instruction manual is like that of a Zhiguli, but in reality it is even higher. During the Soviet era, they didn’t think about efficiency, and drivers poured gasoline into the ground; there was nowhere to put it. These fuel costs are too high for a motorcycle these days.

There are a sufficient number of cases of inaccuracy in the manufacture of the engine crankcase at the cylinder mounting points

This leads to overheating of the cylinder due to the difference in size until the upper plane of the pistons at top dead center aligns with the upper edge of the cylinders.

In the event that one of the cylinders overheats and there is no cure for this, as an option it is necessary to check whether the piston at its highest point reaches the upper plane of the cylinder; if not, then this is the problem.

To eliminate overheating, it is necessary to achieve symmetrical dimensions, for which purpose the gaskets are removed from under one of the cylinders, and in its place a heat-resistant sealant is used when installing the cylinder. It is possible to install a thinner gasket.

Oil leaks at joints

In conclusion, many people probably thought that the IMZ-8.103-10 engine is just a bucket of bolts... Well, what can we do, since childhood we are accustomed to delving into motorcycles, or rather, repairing them. Therefore, many people miss rebuilding the engine with their own hands. This is of course a joke, but every joke has some truth.

In general, if you properly monitor the engine and carry out timely maintenance, then of course you can take it. With high consumption, the problem is solved by installing one carburetor from the car. The engine is very simple and very easy to repair.

The engine, like the Ural motorcycle itself, is well suited for tuning.

PS Dear owners of Ural vehicles with IMZ-8.103-10 engines! You can write about your identified shortcomings and weaknesses or ask your question.

Oil selection

Comparison of the characteristics of mineral and synthetic oil.
Changing the oil in a Ural engine is a very important task, especially if it is already due. Since the bike’s clutch is completely immersed in lubricant, its choice must be approached with all responsibility. As mentioned above, automobile oils are not suitable for four-stroke Ural engines, since their viscosity does not meet the required one. Motor oil fluid for motorcycles has a completely different set of impurities and additives than for cars, which is why it works somewhat differently.

If the bike is used year-round, which is rare in the harsh Russian winters, then it makes sense to fill in all-season oil. This lubricant has a number of advantages over others, since it contains special additives that make the oil equally effective at low and high temperatures. Manufacturers of such oil conduct thorough and long-term tests of their products at various, even abnormal, temperatures, and at the same time its quality is not compromised in any way.

In cases where the motorcycle is used only in warm weather, summer oils can be used. They are very popular and perform their functions perfectly. Unfortunately, they are rarely found on Russian shelves, but it’s still worth looking for.

Oil viscosity.

When choosing oil for a motorcycle engine, it is important to consider its viscosity. For smooth operation of the motor, you need a sufficiently liquid lubricant that will not thicken at low temperatures. If the engine is very worn, it makes sense to fill in engine oil with a higher viscosity than the instructions require, since such an engine smokes a lot when driving, and thick oil will help avoid this. Many Ural owners are confident that no oil, even the lowest quality, can ruin the operation of the engine.

Since the motorcycle belongs to a high class and has a “masculine character,” its engine has all the qualities that are necessary under increased loads, even if its wear is quite severe. As a rule, since Soviet times, the manufacturers of Ural motorcycles themselves have recommended M8B1 oil in their instructions. It is considered one of the poorest quality, but the engine runs great on it. You can imagine how the engine will work with good high-quality lubricant.

It will not drive, but fly, which is what it does, reaching a maximum speed of 120 km/h on a straight road. But such a speed can be very dangerous on the roads, so it is more comfortable and safer to drive at a speed of 60-80 km/h, not only on a good highway, but also on country and forest paths. Almost any mineral lubricant is suitable for such a movement, and from both an economic and practical point of view it is more profitable to use the cheaper one, because there will be no difference between them.

Lubricant selection

Pouring fresh lubricant into the Ural fork is a responsible procedure. It is necessary to choose the oil very carefully, because the motorcycle clutch is completely submerged in lubricating fluid.

Motor oil should not be poured into a four-stroke Ural engine, because it has an inappropriate viscosity coefficient. Oil for bikes has a completely different set of additive elements.

1. If the motorcycle is used all year round, which is surprising given the cold winters of Russia, pour a universal consumable into the engine. This oil has certain advantages over others because it contains special additives. Thanks to them, the lubricant is effective in low and high temperature conditions. Manufacturers of lubricating fluid that is poured into motorcycles carefully and for a long time test it under different temperature conditions.
2. If the bike is used only in the summer, you can fill it with summer oil. This lubricant is common and perfectly lubricates internal combustion engines.
3. When choosing the lubricant that you will pour into the bike, you need to take into account its viscosity index. In order for the engine to function smoothly, a fluid lubricating fluid is required that does not thicken in low temperature conditions. If the engine is significantly worn out, you can pour viscous lubricant into it, because a worn-out engine smokes when driving. Most Urals owners believe that even low-quality petroleum products are unable to harm the internal combustion engine.

4. Since the Ural bike is considered a high-class motorcycle, its engine has characteristics that allow it to function under increased loads, even with severe wear. The Ural manufacturer recommends pouring M8B1 lubricant into it. It does not have the best reputation, but the internal combustion engine functions perfectly when it is filled.