Engine VAZ 21116/11186 1.6l. 87hp

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The modernization of the eight-valve VAZ-21114 engine was brought closer by two major events: the release of Grants to the market and the transition of the entire model range to the next environmental level - Euro-4. And although the old 1.6-liter, despite its advanced age (its roots stretch back to the mid-80s of the last century), did not look like a frail old man, new standards and trends required extensive changes. At the same time, the possibilities for maneuver for motorists, as often happens, were narrowed by financial limits.

Therefore, we went along the already beaten path. After all, several years earlier, a 16-valve engine of the same volume (VAZ-21126) underwent an update, on which some technical solutions were tested. Moreover, they were able to unify not only the approach, but also many details, for example, a connecting rod with liners, a piston pin and rings. The cylinder block, although with its own index, is exactly like that of the VAZ-21126 engine: with additional nozzles for cooling the pistons with oil and plate-honing of the cylinder walls, which reduces the break-in time.

However, it was not possible to copy all the changes exactly: organizing the workflow in an engine with two valves per cylinder is more difficult. Moreover, the requirements for the modernized eight-valve engine turned out to be stricter. Take, for example, the resource - 160 thousand km for the VAZ-21126 and 200 thousand km for the VAZ-21116. Photos with captions will tell you what was changed and why.

Design Features

Important changes that occurred in the 21116 engine include the replacement of the connecting rod and piston group. It was ordered from Federal Mogul under catalog number 1004010. Now the connecting rod and piston group has become lightweight. Thanks to this replacement, the engine power increased, vibration and extraneous sounds from the engine in the cabin decreased. Reduced fuel consumption.

Now the connecting rod and piston group is equipped with the following parts:

• oil rings of sizes 1.2, 1.5, 2 mm;
• connecting rod parts designed for VAZ 21116.

The VAZ engine cooling system was changed. The number of nozzles for cooling the pistons with lubricant has been increased. The cylinder diameter was set at 82 mm and the height at 197.1 mm. The cylinders are plate-honed.

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The gas distribution mechanism was made more reliable and powerful. Instead of a chain, they installed a belt, since when it broke, the valves constantly bent. The lifespan of a timing belt is 200 thousand kilometers.

Attention! The belt was purchased from. It can be found under catalog number 21116-1006040-00. Timing belt width – 22 mm.

Due to changes in the gas distribution mechanism, it was necessary to install a spacer washer under VAZ catalog number 21116-1005317 on the crankshaft. Installing this part allowed the pulleys not to change their position during operation.

Additionally, the following components were introduced:

• automatic tensioner for toothed belt;
• toothed pulley for crankshaft;
• toothed pulley for camshaft.

The weight of the VAZ engine is 112 kg, despite the fact that the cylinder block is cast from cast iron. It is characterized by increased resistance to overheating.

Since the eight-valve engines of the VAZ 21114, this engine is distinguished by smooth operation and automatic control, because an injection system is used. Economy is also excellent. For example. On the highway, fuel consumption is 7.5 liters per 100 km.

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Using computer modeling, we selected the optimal flow section of the gas channels, improving their throughput and reducing inlet losses. Since the power was increased, the engine became more thermally loaded, so it was necessary to include an additional operation in the technological process - heat treatment. By the way, all 16-valve heads pass it. In addition, for the sake of more efficient heat removal, the cross-section of the cooling channels was increased, but only those that really needed it.

Specifications and description

The VAZ 21116 engine is a direct successor to the Kalinovsky engine 11186, modernized and improved. But, the main base of the engine belongs to the legendary Zhigulevsky engine - VAZ 21083.

So, let's look at the main technical characteristics of the 21116 motor:

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It not only frees you from unnecessary operations, but also ensures correct tension, which affects the service life no less than the quality of the belt itself. If you overtighten, the roller and water pump bearings will suffer. The latter, by the way, has also been modernized: a more reliable bearing and oil seal have been installed, and the performance has also been increased (the unit is from a sixteen-valve engine, only with a pulley for a narrow belt).

Advantages and disadvantages

VAZ 21116 is an easy-to-maintain and at the same time reliable engine. Once every 15,000 kilometers it is necessary to change the engine oil. The timing belt should be inspected every 25,000 kilometers, and replaced after 200,000 km.

The advantages include the low cost of the cylinder head and reduced noise level. And major repairs can be carried out by a car owner who has experience in disassembling and assembling engines. This is possible because the engine components are interchangeable. Easy dismantling of mounted elements makes it unnecessary to disassemble the engine part of the vehicle.

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The advantages of the VAZ engine include:

• ease of repair;
• good traction at low speeds;
• there is no need to tighten the timing belt, since the tensioner is in effect. If you try to tension the belt and tighten it yourself, the roller bearings and water pump will fail;
• The timing drive is protected by a plastic impact-resistant casing;
• economical fuel consumption;
• reliability and durability.

However, there are also disadvantages to this unit. Experienced car owners note:

• the need to regulate valve clearances, since there are no hydraulic compensators;
• frequent malfunctions during operation of even a new VAZ engine;
• low environmental friendliness, which does not meet European standards and does not reach modern Euro 4;
• purchase of expensive foreign components.

The unit often has problems with some sensors at idle. This is a childhood disease that was abandoned by engineers from the moment the engine was released. Therefore, it cannot be corrected and you have to accept it.

Nikolay GANYUSHKIN, head of the engine design bureau

The modernization of the eight-valve engine for front-wheel drive models took two years. The main goals were to reduce fuel consumption and increase dynamic performance by reducing mechanical engine losses, and at the same time reducing harmful vibrations and noise. And of course, increased reliability. Euro 4 standards require that the engine maintain its original emissions parameters twice as long - up to 160 thousand km. And we almost doubled the resource: from 120 thousand to 200 thousand km. The connecting rod and piston group of the VAZ-21116, like the sixteen-valve one, is purchased. In the future, we plan to produce some parts ourselves, and we will continue to purchase some from foreign partners from the Federal Mogul group, who intend to localize the production of components in Russia. We also take into account the interests of the Renault-Nissan alliance. If engine production volumes increase, then it would be reasonable to purchase additional equipment and organize the production of connecting rod and piston group parts in Togliatti.

New VAZ-21116 engine: with a light heart

Faults and repairs of internal combustion engines 21116

Experienced mechanics often refer to the following faults:

• floating speed of the VAZ engine. In this case, the electronic throttle valve E-gas suffers. It is usually replaced with a new one;
• knocking noises in a VAZ engine appear when the valves do not operate synchronously. This happens when the VAZ engine valves are rarely adjusted. If the car owner has recently adjusted the valves, and knocking still continues to come from the engine, then experienced mechanics recommend checking the main or connecting rod bearings;
• engine tripping occurs due to the fact that the four-terminal ignition coil has failed. Sometimes the engine may stall due to burnt valves. True, recent breakdowns do not happen often;
• overheating occurs due to clogged cooling system pipes. Carbon deposits accumulate inside the pipes and radiator and prevent the oil from circulating normally. Breakdowns also occur with the thermostat, and the fan fails. Because of this, the motor overheats.

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If the water pump breaks, it is usually the timing belt that is stuck. In this case, the engine valves bend. Therefore, it is important to monitor the operation of the pump. Its timely replacement will save the VAZ car owner from major engine repairs.

During annual preventive maintenance, the following components are replaced:

• spark plugs are changed after 2 years or twenty thousand kilometers;
• oxygen sensor - after one hundred thousand kilometers;
• air and fuel filters are changed simultaneously after 40 thousand km;
• The battery is changed after two years if it has exhausted its lifespan.

After 40 thousand kilometers, they check the gas tank cap, fuel wire, fittings and hoses for cooling and heating the engine, and exhaust manifold.

Experienced car owners and mechanics can increase the power of a VAZ engine to 50 horses. But this will have a bad effect on the resource of the engine. Motor components will be subject to rapid wear. Therefore, for those who want to tune the engine to increase the power of the VAZ, it is recommended to consult with experienced mechanics. Perhaps they will advise modifying the exhaust manifold or replacing the standard pump with a pump from Luzar.

They can install a turbine. In this case, the cost of tuning will increase several times.

Main reasons

Motor device

Car owners of Lada Priora 21126 are interested in knowing the reasons why the valves on their car bend. Auto mechanics claim that on all modern models of this car, as a result of a broken timing belt, the valve motor bends. The first engines for front-wheel drive VAZ 2110, unlike similar units for rear-wheel drive, had a volume of 1.5 liters. Somewhat later, similar designs with a volume of 1.6 liters appeared. with 8 valves and one camshaft. Some car enthusiasts do not know whether the valves on such engines bend. This process does not occur due to the first elements not meeting the pistons at the dead center. After evolution, new 16-valve units with two camshafts appeared. This made it possible to increase power from 76 hp. up to 92 hp, while the engine size has not changed.

Experts say that such units are also unreliable, since when the timing belt breaks, valves and pistons meet even at a dead center, and as a result, the engine bends the second elements on the Priora. Such repairs are expensive. In addition to replacing the valve, sometimes the pistons also have to be replaced.

AvtoVAZ designers, having modified the 16-valve engine, installed it for the first time on the new VAZ 2112. The engine received the abbreviation 124. The distinctive features of the new unit from previous analogues are the presence of an updated piston group. They received “grooves” or so-called “notches”, with the help of which reliable protection is created against timing belt breakage. The VAZ 2112 with this engine is considered a reliable and powerful vehicle.