Description of the Renault Logan 1.6 16 valve engine. Budget sedan Renault Logan I. Advantages and disadvantages of power units

Renault Logan, aka Nissan Aprio, Renault Tondar 90, Nissan NP200, Lada Largus and Renault Symbol - cars of the same group, built on the basis of the Romanian model Dacia Logan. The car was born in 2004 and was equipped with various power units throughout its production life.

The Renault Logan engine, which is used to complete the car, is mainly determined by the solvency of the market to which the car is supplied, as well as the requirements for the quality of the fuel being filled.

Gasoline engine Renault Logan K series installed on cars Russian production is a modified design of a very outdated engine, which has been mounted on production cars since the mid-80s. The K7M engine, unlike its E-series ancestor, has an overhead camshaft driving 8 valves.

With this modification, the Renault Logan engine design was brought to a more modern level, unlike previous generation when the valve control shaft was located at the bottom of the cylinder block. The Logan 8-valve internal combustion engine has several versions, but the technical characteristics of the Logan engine are far from perfect.

The Renault Logan 1.6 engine in its single-shaft version can develop a maximum power of 98 hp. The K7M engine is quite versatile in terms of environmental characteristics, and although it is currently produced according to Euro 5 standards, having higher technical characteristics, it is also produced according to the entire range of requirements from Euro 1 to Euro 4.

The Renault Logan 1.6 8 valve power unit has limited opportunities for improvements. In order for the engine characteristics to meet the requirements for environmental friendliness, power, and fuel consumption, the cylinder head was modified and two camshafts were installed. This engine received the design index K4M. Specifications This engine indicates the possibility of developing a power of 113 hp. at 5500 rpm.

Engine K7M

The Logan K7M engine has 12 (14) versions. The differences are expressed in maximum power and the type of fuel used. Maximum power varies from 74 to 98 hp, with maximum speeds ranging from 5000 to 5500. Gasoline, gas, ethanol can be used as fuel.

Structurally, the 1.6 engine is made according to the L4 SOHC scheme. Number of valves - 8. Electronically controlled injection fuel supply system.

On Russian market there are no cars whose engines are configured to run on liquefied gas or ethanol. Until 2010, the K7M 710 engine was standardly installed on the Renault Logan. In 2011, the K7M 800 series engines began to be installed on cars. The technical characteristics of the new line of engines were somewhat suppressed to suit Euro4 requirements.

Due to the reconfiguration of the injection system and the operation of the catalytic converter, the engines lost 3 hp. and now develop only 83 horses at 5250 rpm, while developing a torque of 130-135 Nm within the rev range from 2500 to 5500. Peak torque is achieved at 4700-4800 rpm.

As an execution option and how replacement part The K7MF710 motor is supplied, having the letter index F. indicating the ability to work on both gasoline and ethanol. Officially, such engines were not installed on cars intended for the Russian market.

The valve control design is based on the use of rocker arm pushers, which increases the number of parts used and, accordingly, reduces the reliability of this unit. The intake and exhaust valves are located on both sides relative to the engine axis. The camshaft is driven by a belt drive from the crankshaft. The rotation speed ratio is 1 to 2.

If the valve belt breaks, it may bend. The description of the CPG indicates the presence of a single recess in the bottom of the piston, but its depth is not enough. The valve may be bent if the valve hangs fully open.

With timely maintenance and replacement of necessary structural elements, the engine life is 400,000 km before the first major overhaul.

Engine K4M

Renault Logan is also equipped with 16 valve engines. Cars leave the factory equipped with K4M power units. This type of engine is a continuation of the development of the K7 family. The main design difference is the DOHC design of the engine. Two camshafts are used, mounted in a modified valve head.

The design is traditional, and the design solution made it possible to avoid using rocker arms as pushers. Force is transmitted directly from the cams camshaft to the valve stem. The technical characteristics of the engine allow you to get 113-115 hp, but the peculiarity of this option power plant is the presence of a pronounced peak torque value.

The dependence of torque on speed is almost linear with an increase to 160 Nm at 4500 rpm and a subsequent decrease to 135 Nm at 7000 rpm. The engine is quite revvy. Maximum power is produced at 6800 rpm.

For the Russian version of the Renault Logan, the K4M engine is supplied with index 490. The same type of power plant is installed in the Lada Largus. To answer the question of whether the valves bend on this type of engine, it is necessary to turn to the design on the basis of which this engine was designed.

The resource of the K4M power plant is 400,000 km, like its predecessor. The indicators set by the manufacturer are confirmed under real operating conditions.

Fuel system

The fuel system of both types of units is injection. The engines are designed for operation on 95 gasoline. Use of fuel with octane number 92 is acceptable, but not justified, since fuel consumption increases and engine power characteristics decrease.

Oil system

Structurally made the same. The system pressure is generated by a gear oil pump mounted at the bottom of the engine. Oil is taken from the crankcase and supplied to the system under pressure. The cylinder mirrors are lubricated by oil mist (bubbling), which is created when the crankshaft rotates. Forced irrigation of the lower part of the cylinders using oil nozzles is not provided.

Motor oil for Renault Logan selected based on operating conditions. Which oil to use basic basis absolutely not important. Since the power units are designed on the basis of engines of the 80s, all construction materials and, in general, all engine reliability require the use of mineral, semi-synthetic and fully synthetic oils.

However, the manufacturer indicates the use of mainly mineral water and semi-synthetics as the most economically justified options for liquid lubricants. The engines are not so finicky as to work exclusively on modern synthetic oils. For the first time, Elf 5w30 all-season semi-synthetic oil is filled at the factory.

What kind of oil to pour then during operation depends on the technical condition and mileage of the engine, as well as temperature operating conditions. The most universal oil for Renault Logan is a lubricant with a viscosity of 5w40 and 5w50, providing normal work motor in all climatic zones.

Main malfunctions and operational problems

Some malfunctions, such as engine tripping or engine vibration, are primarily caused by the spark plugs. Spark plugs have a limited resource and require timely replacement.

Due to the fact that this consumable element for controlling the ignition system is often counterfeited and, in principle, has a limited number of quality suppliers, the spark plugs should either be changed during maintenance at certified stations, or purchased spark plugs from authorized dealers.

Another frequent malfunction The cylinder head gasket is considered to be burnt. The problem is related to insufficient cooling of the block head. This is especially true on 16 valve engines.

A broken timing belt causes the valves to bend. Therefore, it is necessary to replace the belt drive and rollers every 60,000 km.

Design power units not complicated. If you have sufficient skills, you can repair the engine yourself. When replacing the timing belt on a 16-valve unit, it should be taken into account that there are no marks for aligning the shafts on the front of the engine.

If the top dead center of the piston can be determined by unscrewing the spark plugs and turning the crankshaft, followed by fixing it with a bolt through a special hole, then the camshafts are set according to the marks located in the rear of the head and closed with plugs. The shafts also have the ability to be fixed with special inserts.

Possibility of tuning and modifications

Renault has its own tuned K4M RS engine, developing 133 hp. Renault Logan does not have such an engine installed at the factory. If you do not plan to replace camshafts or deeply modernize the cylinder head, then tuning a Renault engine is usually done by flashing the engine management system. This allows you to increase the power of the standard 16 valve engine from 109 to 120 hp

Installing a turbine supercharger is possible, but will lead to a reduction in engine life.

Engine Renault Logan 1.6 liter capacity 86 Horse power installed on the first-generation budget Logan sedan. This is a fairly simple 8-valve engine with a cast-iron cylinder block (with an aluminum pan) and a timing belt. Today we will tell you in detail about the characteristics and features of this motor. Engine Renault K7M 710 has a rather archaic design. Simplicity and reliability are exactly what is expected from an inexpensive car. According to the manufacturer, with proper care, the service life can be more than 400 thousand kilometers.

Engine design Renault Logan 1.6

The power unit is gasoline, four-stroke, four-cylinder, in-line, eight-valve, with an overhead camshaft. The operating order of the cylinders is: 1–3–4–2, counting from the flywheel. Power supply system - distributed fuel injection MPI (Euro-2 toxicity standards).

Engine Renault Logan 1.6 with the gearbox and clutch form a power unit - a single unit fixed in engine compartment on three elastic rubber-metal supports. The right support is attached to the bracket on the top cover of the timing belt, and the left and rear ones are attached to the gearbox housing.

The engine cylinder block is cast from cast iron, the cylinders are bored directly into the block. The nominal diameter of the cylinder is 79.5 mm. At the bottom of the cylinder block there are five crankshaft main bearing supports with removable caps, which are attached to the block with special bolts. The holes in the cylinder block for the bearings are machined with the covers installed, so the covers are not interchangeable and are marked on the outer surface to distinguish them (the covers are counted from the flywheel side). On the end surfaces of the middle support there are sockets for thrust half-rings that prevent axial movement of the crankshaft.

The crankshaft main and connecting rod bearing shells are made of steel, thin-walled, with an anti-friction coating applied to the working surfaces. Crankshaft with five main and four connecting rod journals. The shaft is equipped with four counterweights cast integrally with it. To supply oil from the main journals to the connecting rods, there are channels whose outlet holes are closed with plugs. At the front end (toe) of the crankshaft are installed: drive sprocket oil pump, a timing gear drive toothed pulley and an auxiliary drive pulley. In the hole of the toothed pulley there is a protrusion that fits into a groove on the toe of the crankshaft and secures the pulley from turning. The drive pulley for auxiliary units is similarly fixed on the shaft.

Cylinder head of Renault Logan 1.6 engine

Cylinder head Renault Logan 1.6- from aluminum alloy, common to all four cylinders. It is centered on the block with two bushings and secured with ten screws. A non-shrinking metal gasket is installed between the block and the head. There are five camshaft supports (bearings) located at the top of the cylinder head. The supports are made one-piece, and the camshaft is inserted into them from the timing drive side. The camshaft is driven by a toothed belt from the crankshaft.

In the outer support journal of the camshaft (from the flywheel side) there is a groove into which a thrust flange fits, preventing axial movement of the shaft. The thrust flange is attached to the cylinder head with two screws. The valve rocker axis is attached to the camshaft supports with five bolts. The rocker arms are kept from moving along the axis by two brackets, which are secured with bolts securing the rocker arm axis. Screws are screwed into the rocker arms, which serve to adjust the thermal clearances in the valve drive 5.

The adjusting screws are prevented from being loosened by locknuts. The valve seats and guides are pressed into the cylinder head. Oil deflector caps are placed on top of the valve guides. The valves are steel, located in two rows, inclined to the plane passing through the cylinder axes. At the front (along the direction of the car) there is a row of exhaust valves, and at the rear there is a row of intake valves. Plate intake valve more than graduation.

The valve is opened by a rocker arm, one end of which rests on the camshaft cam, and the other, through an adjusting screw, on the end of the valve stem. The valve closes under the action of a spring. Its lower end rests on the washer, and its upper end rests on a plate, which is held in place by two crackers. The folded crackers have the shape of a truncated cone on the outside, and on the inside they are equipped with thrust flanges that fit into the groove on the valve stem

Engine oil pump Renault Logan 1.6

Oil pump Renault Logan 1.6 has a rather archaic design inherited from older engine models such as the Renault ExJ. Chain pump drive. The pump drive sprocket is mounted on the crankshaft under the front cover of the cylinder block. The sprocket has a cylindrical belt along which the front crankshaft oil seal operates. The sprocket is installed on the crankshaft without interference and is not secured with a key. When assembling the engine, the pump drive drive sprocket is clamped between the timing pulley and the crankshaft shoulder as a result of the package of parts being tightened with the auxiliary drive pulley bolt. Torque from the crankshaft is transmitted to the sprocket only due to the friction forces between the end surfaces of the sprocket, toothed pulley and crankshaft.

Timing drive for Renault Logan 1.6 engine

Timing mechanism drive diagram Renault Logan 1.6 You can see it a little higher in the photo. Failure of the timing belt (timing belt) (break or cut of teeth) will lead to valves sticking into the pistons due to mismatch of the rotation angles of the crankshaft and camshaft and, as a result, to expensive engine repairs. That is when the timing belt breaks on Renault Logan 1.6, the valve bends! Therefore, in accordance with the regulations Maintenance We check the condition of the belt every 15 thousand kilometers. Since spark plugs also need to be changed after 15 thousand km, it is better to combine these works, because it will be easier to turn the crankshaft when checking the belt. The surface of the toothed part of the belt should not have folds, cracks, undercuts of teeth and separation of fabric from rubber. back side The belt should not have wear that exposes the cord threads and no signs of burning. There should be no delamination or fraying on the end surfaces of the belt. The belt must be replaced if traces of oil are found on it. Regardless of the condition of the Renault Logan 1.6 timing belt, it is necessary replace every 60 thousand km.

Technical characteristics of the Renault Logan 1.6 engine

• Working volume – 1598 cm3
• Number of cylinders – 4
• Number of valves – 8
• Cylinder diameter – 79.5 mm
• Piston stroke – 80.5 mm
• Timing drive - belt
• Power hp (kW) – 86 (64) at 5500 rpm. per minute
• Torque – 128 Nm at 3000 rpm. per minute
• Maximum speed– 175 km/h
• Acceleration to the first hundred – 11.5 seconds
• Fuel type - AI-92 gasoline
• Fuel consumption in the city – 10 liters
• Fuel consumption in the combined cycle – 7.2 liters
• Fuel consumption on the highway – 5.7 liters

The engine was assembled at the Romanian Automobile Dacia plant, which is where the French organized the assembly. Until recently, it was from Romania that the engine was imported to the Moscow Avtoframos plant, where it was installed in the first generation Renault Logan and Sandero.

Just recently, I myself went to showrooms and websites with a headache in search of a car to replace my 2000 GAZ-3110. The Volga served me faithfully for 3 years and started even at minus 38 with almost half a turn. Before her, I also drove our cars: VAZ-2106, IZH-ODA 1.6, VAZ-2111, and they all turned out to be good-quality and durable cars. I was very fond of Toyota, but it turned out to be a little expensive. On February 10th of this year I received a present for Valentine's Day and the whole family became the owner of a brand new Logan at maximum speed, and even with a 16-valve engine, which is a novelty for Logans... Nonsense!!! (I even had a Volga with 16 valves, although it was ancient).

Why Logan? I didn’t consider it at all as a car to buy, but it’s updated appearance, financial restrictions, reliability and spaciousness in the cabin did their job. Actually, 473 rubles is already a considerable amount and you can buy a used one, as many advised. However, I needed a NEW one!! suspension and indestructible, like the Volga, so that it can withstand the onslaught of the lack of roads in the city. With my “modest” dimensions of 185/95, I fit comfortably enough only in it. And then, after the spacious Volga, you no longer want to get into a cramped car.

During the month of operation, the car covered 2.5 thousand km. Up to 1000 km, apparently, there was an electronic limiter, because... The engine didn’t spin particularly well, although you can move comfortably in the city without bothering your neighbors in the workshop by revving it up to 2500-3000 rpm. Mine was really no different from the test Logan with an 8-valve engine. At some point after 1000 km the engine woke up and began to sing. After 2000 km it started spinning. What to say? For me, a car with this engine is just a fairy tale. It accelerates up to a hundred, and further up to 145 km/h (I haven’t accelerated it further yet, and there’s no need) with ease and ease, and I’m very pleased with it.

You get used to short speeds quickly. You can use two gears around the city: 1st and 3rd (or 4th, depending on your driving style). At lower levels the car is very high-torque. On the highway you can ride and overtake comfortably in one 5th gear. The steering wheel is sharp, 2.5 turns from rebound to release. Fuel consumption according to the computer: in the combined cycle 8.5-9.2 l/100 km, purely in the city (active driving + traffic jams) - it has not yet been higher than 11.2, taking into account all the warm-ups, purely on the highway - 6.2 l at a speed of 80-110 km /h. Please take into account that Logan is still more of a city car and it is not advisable to race it, although it can easily go 170 km/h.

You can also write about the shortcomings, but they are insignificant, subjective and fit into the price/quality ratio of this car. Many people write that the brushes are bad. Maybe, but with others it won’t be much better in winter (already tested). The point here is that the brush resting zone is not blown with warm air and everything there quickly freezes (this is how it is designed). So get ready to jump out at traffic lights for cleaning or find heated brushes;) There are no breakdowns and, hopefully, no breakdowns are expected for the next 150 thousand mileage, but then we’ll see.

The bottom line is this. Who needs a reliable, well-made workhorse, playful, economical and quite comfortable, for relatively little money, then you can take a closer look at the updated Logan. Appearance has always been a subjective category, but it turned out that you don’t look a “gift” horse in the mouth :) My whole family is happy with this acquisition and it makes me happy.

Review of Renault Logan 1.6 l, 16 valves, 5-speed manual transmission. "Prestige" version.

My auto story:

1) VAZ 2105 1.5 4-speed manual transmission (own) – 40,000 km;

2) Renault Symbol 1.4 5-speed manual transmission (service) – 12,000 km;

3) VW Polo 1.4 8 cells. 5-speed hatchback (service) – 105,000 km;

4) Skoda Octavia 1.6 16 cells 5-speed manual transmission (service) – 23,000 km;

5) Renault Symbol 1.4 16 cl. 5-speed manual transmission (service) – 26,000 km;

6) Renault Logan 1.6 16 cl. 5-speed manual transmission (own) - 44,500 km as of today.

I bought a car in February 2011 from Lucky Motors in Yekaterinburg. First installment 77,000 rub. + 15,000 rub. per month for 3 years (RUB 498,000).

Additionally, I bought rubber floor mats for the interior, a plastic tray for the trunk, and installed a cabin filter (RUB 2,000).

Now the odometer shows 46,000 km.

I'm very pleased with the car. A lot of reliable comfortable car Russian assembly For Russian roads no show off.

Chose New car based on a budget of 400,000 rubles. Watched:

1. Renault Logan.

2. Hyundai Accent.

3. Lada Priora.

4. Skoda Fabia.

5. Nissan Almera Classic.

There was also a desire to take the Skoda Octavia 1.8 TSI 7-DSG for 900,000 rubles. and got deeply into debt, but sober calculation won.

I chose Renault Logan (collected reviews) for:

1. Reliability (according to taxi drivers in Ekata, Kurgan and Tyumen, cars go 200,000 km without repair. They start in any frost).

2. Spaciousness (when I was without a car - I drove as a passenger in Logan - I liked the visibility and comfort of the rear sofa. It is also important for me - children have a very good view from the seats).

3. Tall ground clearance 155 mm, it’s important for me to go to the dacha on a broken dirt road (this is where the emphasis dropped, in principle...).

4. Build quality (the service mechanics said that the Lada was welded and assembled poorly and did not advise taking it, but the Logan was “excellent”).

5. I also looked at the efficiency and environmental friendliness of Logan - Euro 4, the declared consumption in the city is 9.4 l/100 km (1.6 16 cl), the same as that of the 1.4 8 valve engine.

“Prestige” package because:

1. This is the maximum speed, and it has everything that the designers intended for it.

2. The most modern engine in the line is 1.6 16 valves 102 hp. With. 145 N/m at 3700 rpm (my colleague used Logan 1.4 - he said that sometimes when overtaking on the highway there is a little lack of elasticity 80-120 km/h).

4. Better interior trim.

5. The most elegant appearance.

6. Maximum safety (watched all crash test videos on euroncap).

The color is white because:

1. Heats less in the sun in summer.

2. The brightest car at dusk is white, this is safety.

3. Any small car looks smarter in white.

Advantages of the car

1. Very spacious interior– for a family: mom + dad + 2 children + mother-in-law – perfect. The rear seat can accommodate 2 child seats and a mother-in-law (165 cm, 75 kg). The trunk fits 2 children's bicycles with side wheels!, or a gasoline lawn mower, or a bunch of things, the arches of the trunk lid are a little in the way, but you can get used to it. But the lid opens very wide.

2. The cabin is quite quiet when driving up to 100 km/h. Additional sound insulation (Prestige version) was not required, although before buying the car I read reviews about noise and planned to do it. The budget for additional sound insulation is 17,000–25,000 rubles. at the Renault Autoworld showroom. Lucky Motors said that they wouldn’t deal with such nonsense at all...

3. Excellent suspension and geometry: ground clearance under load of 155 mm and wheelbase of 2630 mm. I comfortably pass speed bumps, holes and potholes. I drove on broken roads country road with ruts, puddles 30 cm deep and gullies with four passengers - it was easy to drive through. I only asked passengers to get out a couple of times. On the way to the dacha - a 2 km dirt road - I fly as if on asphalt. It’s a pity to look at the owners of Mazda 3, Ford Focus and other low cars for a million when they try to follow me over potholes, poor fellows. Once upon a time from me TOYOTA Highlander the last generation along a broken country road (the road for trucks from 44 km of the EKAD to Ganina Yama) is lagging behind - it’s a pity expensive car. And when later on the asphalt Toyota caught up with me and began to pass me on the left - the driver almost leaned out of the right window to see who was driving there in “that Logan”... and then, when he drove around, he slammed on the gas with irritation and fire... I laughed.

4. Gasoline consumption: In summer, city/highway – 8.9 l/6.7 l per 100 km. In winter, city/highway 11 l/7.8 l per 100 km. In the city I like to accelerate sharply, but on the highway I drive 90–110, overtake trucks, rev the engine up to 5000 rpm. I have been using the ER friction winner in the engine from the very first kilometers - I like it; one feels that the engine turns easier and gasoline consumption decreases by 0.5–1 liters per 100 km on the highway.

5. Excellent visibility from the front seats, and for children from child seats in the rear seats.

6. Live motor. Run-in until 28,000 km (with ER), after that it went more lively. The torque is especially felt when I'm driving alone. If it is fully loaded, it is difficult to overtake on the highway, only if with a large margin. I fill up with 98 gasoline in the summer. The engine accelerates the car faster than on the 95th and 92nd. In winter, if it’s colder than -25 degrees, it’s 92 degrees, so that it starts better in cold weather. The engine starts with half a turn at –32 degrees, no automatic winding or VEBASTO. I also use a special blanket (Autoheat) in winter. The engine cools down more slowly with it.

7. Comfortable seating, especially in the rear seats - like on a sofa (compared to the Skoda Octavia and Volkswagen Golf 6 - you sit there like in a basin).

8. Convenient rear doors. It's convenient to sit the children back and load, for example, the TV.

9. Good headlight: low beam - the angle of the headlights is adjustable and high beam hits 150–200 m. Sufficient for driving 90–110 km/h on a night highway.

10. Clear and convenient service. I do maintenance every 15,000 km according to the regulations, more often. 1, 2 and 3 maintenance – 8,000 rubles. I change the cabin filter myself, it costs up to 450 rubles, I try to change it once every 2 months. In the summer I use coal. 4 maintenance services for 60,000 km with timing belt replacement at the Lucky Motors showroom were promised to be done for 17,000 rubles.

11. Managed like small car(compared to the Skoda Octavia, this is a real ship).

12. Doesn’t get blown away from a narrow highway (2 lanes for traffic without a median) by the oncoming air flow from a truck when moving 110 km per hour and by an oncoming truck at 90 km/h (compared to the VW Polo - it was carried away by you had to hold on).

Disadvantages of the car

1. People don’t respect you on the road if you hesitate a little, but when you drive fast and show all the lane changes, it’s normal.

2. Snow and dirt accumulate behind the seal along the upper edge of the doors. The snow freezes and turns into ice, you have to sweep it away so that it doesn’t fall into the cabin when you open the doors.

3. In humid (frosty) weather, the rear windows fog up (freeze).

4. There is no lumbar support in the driver's seat. All adjustments are stepped, sometimes it is difficult to find a comfortable position. At long trips your back gets tired.

5. There are no standard hooks for the securing net in the trunk.

6. Insufficient visibility to the rear when parking - it is better to order parking sensors (about 8,000 rubles), or a rear view camera, or park in narrow spaces only in front. I hit the bumper twice (without consequences), but only in the first days of use. Then you get used to it, and the dimensions are read very well.

7. It seemed to me that the interior cools down very quickly when you turn off the engine in winter, but this is subjective.

8. Aerodynamics - after 80 km/h the oncoming air flow begins to whistle. You have to get used to this. Drag coefficient 0.36 (like a brick)

9. Dealer service is a bit expensive.

10. Low beam lamps burn out very often. (Need additional protection). I am already installing lamps with double the service life. I turn on the low beam no earlier than 1 minute after starting the engine. I close the hood very carefully. And still the lamp lasts for a maximum of 3 months. "Avtoframos" - do something with the light already!!!

11. Rear seats do not fold down. Dear developers!!! Make folding seats already, all my classmates have folding ones. IN family car Sometimes you need to carry a crib or an adult bicycle or something else completely oversized!!!

12. The angle of the backrest does not change rear seat. If a 5-year-old child falls asleep in a chair, his head falls forward. It is necessary that the backrest leans back and the baby rides almost lying down.

General impression

I recommend Logan to practical family people without an inferiority complex. Remember that the car has a limited ability to transform the interior. I don’t recommend it to young guys - you’ll regret the purchase.

The Renault Logan 1.6 8 valve engine appeared in our country along with the first generation Renault Logan. Initially, the K7M gasoline power unit produced 87 horsepower, but today the same engine has a power of 82 hp. There is no error in this difference. The fact is that in 2005 the engine complied with Euro-2 environmental standards, and today it complies with Euro-5 standards. The power unit was made more environmentally friendly, but the reconfiguration deprived Logan’s engine of several horsepower.

Technical characteristics of the Renault Logan 1.6 8 valve engine

Working volume – 1598 cm3 Number of cylinders – 4 Number of valves – 8 Cylinder diameter – 79.5 mm Piston stroke – 80.5 mm Timing drive – belt Power hp (kW) – 87 (64) at 5500 rpm per minute Torque – 128 Nm at 3000 rpm. per minute Maximum speed – 175 km/h Acceleration to the first hundred – 11.5 seconds Fuel type – AI-92 gasoline Fuel consumption in the city – 10 liters Fuel consumption in the combined cycle – 7.3 liters Fuel consumption on the highway – 5.8 liters The engine has a long service life and is completely unpretentious . The main thing is to change the timing belt on time, which is perhaps the most important

weakness

Pros of the K7M engine Renault Logan 1.6 8 valves

Idling ; ✔ there are no hydraulic compensators in the design, so it is necessary to constantly adjust the valves (after 20-30 thousand km); ✔ there is a possibility of valves bending if the timing belt suddenly breaks; ✔ crankshaft seals often leak; ✔ low reliability of the cooling system; ✔ very noisy and prone to vibrations. If all

Engine Renault Logan 1.6 8 cl. gasoline, four-stroke, four-cylinder, in-line, eight-valve, overhead camshaft. The operating order of the cylinders is: 1–3–4–2, counting from the flywheel. Supply system- MPI distributed fuel injection. The engine, gearbox and clutch form the power unit - a single unit mounted in the engine compartment on three elastic rubber-metal supports. The right support is attached to the bracket on the top cover of the timing belt, and the left and rear ones are attached to the gearbox housing. The engine cylinder block is cast from cast iron, the cylinders are bored directly into the block. The nominal diameter of the cylinder is 79.5 mm. At the bottom of the cylinder block there are five crankshaft main bearing supports with removable caps, which are attached to the block with special bolts. The holes in the cylinder block for the bearings are machined with the covers installed, so the covers are not interchangeable and are marked on the outer surface to distinguish them (the covers are counted from the flywheel side). On the end surfaces of the middle support there are sockets for thrust half-rings that prevent axial movement of the crankshaft. Earbuds The main and connecting rod bearings of the crankshaft are steel, thin-walled with an anti-friction coating applied to the working surfaces. Crankshaft with five main and four connecting rod journals. The shaft is equipped with four counterweights cast integrally with it. To supply oil from the main journals to the connecting rods, there are channels whose outlet holes are closed with plugs. At the front end (toe) of the crankshaft there are installed: an oil pump drive sprocket, a timing gear drive pulley and an auxiliary drive pulley. In the hole of the toothed pulley there is a protrusion that fits into a groove on the toe of the crankshaft and secures the pulley from turning. The drive pulley for auxiliary units is similarly fixed on the shaft.

Renault Logan engine lubrication combined. Under pressure, the main and connecting rod bearings crankshaft and camshaft bearings. Other engine components are splash lubricated. The pressure in the lubrication system is created by a gear oil pump located at the front of the oil pan and attached to the cylinder block. The oil pump is driven by a chain drive from the crankshaft.

The timing drive on Renault Logan 1.6 8 valves is carried out according to the following scheme (image just above) - torque from the crankshaft pulley is transmitted to the camshaft pulley, rotating the coolant pump pulley. The belt is tensioned with a special roller, which changes along with timing belt. If the belt breaks, the valve bends. Therefore, in accordance with the vehicle maintenance regulations, we check the condition of the belt every 15 thousand km. The surface of the toothed part of the belt should not have folds, cracks, undercuts of teeth and separation of fabric from rubber. The reverse side of the belt should not have wear, exposing the cord threads, or signs of burning. There should be no delamination or fraying on the end surfaces of the belt. The belt must be replaced if traces of oil are found on it. Regardless of the condition of the Renault Logan timing belt, it must be replaced every 60 thousand kilometers.

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Engine Renault Logan 1.6 8 valves repair (video)