How much does a VAZ classic engine block weigh?

Engine VAZ 2103-1000260. Characteristics of the VAZ 2103 engine.

The engine is four-stroke, carburetor, in-line, with an overhead camshaft. The engine cooling system is liquid, closed type, with forced circulation of liquid. The engine has a combined lubrication system: pressure and splash.

Engine Features.

The VAZ 2103 engine can be used for installation on VAZ 2103, 2106, 2121, 21053, 2107 cars.

The VAZ 2103 and VAZ 2106 engines are structurally identical. The differences between them are due to different cylinder diameters. The cylinder diameter for 2103-1000260 is 76.00 mm.

The cylinder block is made with a center-to-center distance of 95 mm. Cylinder diameter - 76.00 mm. For the cylinder, the accepted dimensions between overhauls are 76.40 mm and 76.80 mm. The block height, the distance from the center of the crankshaft to the top surface of the block, is 215.9 mm (see “Cylinder block”)

The cylinder block is cast from special cast iron. Five classes are defined for the block cylinder diameter sizes. The classes are designated by Latin letters: A, B, C, D, E. Each subsequent class differs from the previous one by 0.01 mm. On the bottom surface of the block next to the hole of each cylinder its class is indicated.

The cylinder head 21011-1005011-10 of the engine is cast from aluminum alloy and is common to all cylinders. The head height is 112.5 mm, the combustion chamber measures 79x51 mm and has a volume of 33.2 cm3. Inside the chamber there is a milled step 2 mm high.

The VAZ 2103 engine is equipped with a camshaft 2101-1006010-20. A distinctive feature of the shaft is one untreated neck, shaped like a regular hexagon. It is located between the cams of the second cylinder.

For the timing drive, a double-row bush-roller chain 2103-1006040 with 116 links is used. A 944mm long V-belt is used to drive the generator and water pump. with a section (10x8).

The crankshaft mod.21213 is installed. It is interchangeable with crankshaft mod. 2103 but has improved characteristics. According to its parameters, it corresponds to the crankshaft 2103 and provides a piston stroke of 80 mm (crank radius - 40 mm).

The engine is equipped with model 2101 pistons and pins. The piston is made of aluminum alloy. The outer surface is covered with a layer of tin. There is no recess on the piston bottom. The piston must be selected in the same class as the cylinder class. There are three dimensional accuracy categories defined for the piston pin bore. Markings on the piston bottom allow you to determine whether it belongs to a certain class (letter) and pin hole category (number).

The piston rings installed on the engine are marked as a set - 2101-1000100-10, for a normal size of 76mm. The piston rings are made of cast iron. The top compression ring has a barrel-shaped chrome-plated outer surface. The lower compression ring is of the scraper type, subjected to hardening by phosphating. The oil scraper ring for the VAZ-2103 piston is not chrome plated. The oil scraper ring is equipped with an expander spring. On VAZ rings, the spring is wound with variable pitch and subjected to grinding along the ends and outer diameter.

Connecting rod mod. 2101. Length of connecting rod 136 mm. Each connecting rod has its own connecting rod cap, together with which it was processed. To eliminate errors during assembly, the connecting rod and connecting rod cap are marked with the number of the cylinder in which they are installed.

Carburetor 2107-1107010-20 is installed together with a distributor that has a vacuum ignition timing regulator.

The engine can be equipped with a classic or non-contact ignition system. With a contact ignition system, an ignition distributor 30.3706 with a B117A ignition coil is used. The contactless ignition system (BZS) uses a coil - 27.3705.

Generator G-221 (42 A). For starting, a starter 35.3708 with an end commutator is used.

Source

Description

Created in 1972, the VAZ-2103 engine represents the third generation of the VAZ classic. In fact, it is a modification of the first-born of the plant - VAZ-2101, but in comparison with it it has significant differences.

Initially, the engine was intended to equip the developed VAZ-2103 car, but subsequently the scope of application expanded.

During its production, the internal combustion engine was repeatedly modernized. It is characteristic that all modifications of this unit had improved technical capabilities.

The VAZ-2103 engine is a four-cylinder naturally aspirated gasoline engine with a volume of 1.45 liters and a power of 71 hp. s and a torque of 104 Nm.

Installed on VAZ cars:

• 2102 (1972-1986);
• 2103 (1972-1984);
• 2104 (1984-2012);
• 2105 (1994-2011);
• 2106 (1979-2005);
• 2107 (1982-2012).

The cylinder block is cast from cast iron. Not sleeved. The height of the block has been increased by 8.8 mm and is 215.9 mm (in the VAZ-2101 it is 207.1 mm). This improvement made it possible to change the engine volume upward. As a result, we have higher internal combustion engine power (77 hp).

A special feature of the crankshaft is the increase in crank size by 7 mm. As a result, the piston stroke became 80 mm. The shaft journals are hardened for increased strength.

The connecting rod is taken from the VAZ-2101 model. Length – 136 mm. It is necessary to take into account that each connecting rod has its own cover.

Pistons are standard. Made from aluminum alloy. The skirt has a tin plated finish.

They have three rings, two upper ones are compression rings, the lower one is oil scraper. The first top ring is chrome plated, the second is phosphated (to increase strength).

Aluminum cylinder head. The camshaft and valves are located on it. The VAZ-2103 design does not provide hydraulic compensators. The thermal clearance of the valves has to be adjusted manually (with nuts and a feeler gauge) after 10 thousand kilometers of the car.

The camshaft has a peculiar feature. Between the cams of the second cylinder there is a non-working neck. It is unprocessed and has a hexagon shape.

The timing drive is a double-row toothed bush-roller chain. It must be borne in mind that when it breaks, the valves bend. A V-belt is used to rotate attachment units.

The ignition system is classic (contact: breaker-distributor, or distributor). But later it was replaced by electronic ignition (non-contact).

Fuel supply system. To prepare the working mixture, a carburetor with a vacuum ignition timing regulator is used. On the Internet you can find a statement that later engine models were equipped with an injector instead of a carburetor.

This is an erroneous statement. The VAZ-2103 has always had a carburetor. An injection power system was introduced on the basis of the VAZ-2103, but this engine already had a different modification (VAZ-2104).

General conclusion: the VAZ-2103 is superior to previous modifications in all respects.

Engine characteristics 2103

Years of manufacture – (1972 – present time) Cylinder block material – cast iron Power system – carburetor/injector Type – in-line Number of cylinders – 4 Valves per cylinder – 2 Piston stroke – 80 mm Cylinder diameter – 76 mm Compression ratio – 8.5 Engine displacement 2103 – 1452 cm3 Engine power 2103 – 71 hp. /5600 rpm Torque - 104 Nm / 3400 rpm Fuel - AI93 Fuel consumption - city 9.4l. | track 6.9 l. | mixed 8.9 l/100 km Oil consumption - 700 g per 1000 km Weight of the VAZ 2103 engine - 121 kg Overall dimensions of the 2103 engine (LxWxH), mm - 565x541x665 Oil for the VAZ 2103 engine: 5W-30 5W-40 10W-40 15W-40 How much oil is in the 2103 engine: 3.75 l. When replacing, fill in about 3.5 liters.

What engines did the “fives” come with?

Throughout its history, the VAZ 2105 came off the assembly line with five different engines:

• 2101;
• 2105;
• 2103;
• 2104;
• 21067;
• BTM-341;
• 4132 (RPD).

They differed not only in technical characteristics, but also in the type of design, type of fuel consumed, as well as the method of supplying it to the combustion chambers. Let's look at each of these power units in detail.

The VAZ 2105 engine has a transverse arrangement

More about the design and characteristics of the VAZ-2105: https://bumper.guru/klassicheskie-modeli-vaz/poleznoe/vaz-2105-inzhektor.html

Engine VAZ 2101

The first unit installed on the “five” was an old “penny” engine. It did not have any special power qualities, but it had already been tested and proved to be excellent.

Table: main characteristics of the VAZ 2101 engine

Engine VAZ 2105

The “five” had its own power unit specially developed. It was an improved version of the VAZ 2101 engine, characterized by a larger cylinder volume with the same piston stroke.

Table: main characteristics of the VAZ 2105 engine

Engine VAZ 2103

The “three-piece” engine was even more powerful, however, not due to an increase in the volume of the combustion chambers, but thanks to a modified crankshaft design, which made it possible to slightly increase the piston stroke. A crankshaft of the same design was installed on the Niva. VAZ 2103 engines were equipped from the factory with both contact and non-contact ignition systems.

Table: main characteristics of the VAZ 2103 engine

Engine VAZ 2104

The power unit of the fourth Zhiguli model, which was installed on the VAZ 2105, differed in the type of injection. Here, not a carburetor was used, but electronically controlled injectors. The engine has undergone some changes regarding the installation of components for injection supply of the fuel mixture, as well as several monitoring sensors. In all other respects, it was practically no different from the carburetor “three-piece” engine.

Table: main characteristics of the VAZ 2104 engine

Engine VAZ 21067

Another unit that equipped the “five” was borrowed from the VAZ 2106. In fact, this is a modified version of the VAZ 2103 engine, where all modifications were reduced to increasing power by increasing the diameter of the cylinders. But it was this engine that made the “six” the most popular car due to its reasonable ratio of the amount of fuel consumed and the power developed.

Table: main characteristics of the VAZ 21067 engine

Engine BTM 341

BTM-341 is a diesel power unit that was installed on classic VAZs, including the “five”. Basically, such cars were exported, but they could also be found here. The BTM-341 engines were neither particularly powerful nor low in fuel consumption, which is apparently why diesel Zhigulis did not take root in the USSR.

Table: main characteristics of the BTM 341 engine

Engine VAZ 4132

Installed on “five” and rotary engines. At first, these were prototypes, and then mass production. The VAZ 4132 power unit developed twice as much power as all other Zhiguli engines. For the most part, “fives” with rotary engines were provided to police units and special services, but ordinary citizens could also purchase them. Today it is rare, but you can still find a VAZ with a 4132 engine or similar.

Table: main characteristics of the VAZ 4132 engine

Malfunctions and repairs of the VAZ 2103 engine

Engine VAZ 2103 1.5 l. carburetor in-line 4-cylinder with an overhead camshaft, the timing belt of the 2103 engine has a chain drive. The VAZ 2103 engine block is tall, more on that below. The service life of the 2103 engine, with careful operation and timely maintenance, exceeds the 125 thousand km established by the factory and reaches 180-200 thousand km. The main differences between the 2103 engine and the 2101 engine are the increased block height by 8.8 mm from 207.1 mm to 215.9 mm to allow the installation of a crankshaft with an increased piston stroke, thanks to which the engine volume has increased to 1.5 liters. As noted in previous articles, Lada engines have a problem with camshaft wear. Due to the fact that the chain drive does not have a tensioner, the chain needs to be tightened, the engine also needs constant (every 10 thousand km) adjustment of the valve clearances, this will be indicated by a loud knocking sound in the VAZ 2103 engine when the engine is idling, audible from a standstill driver with the hood closed. Many people have a question, why adjust the valves, the answer is simple - power will decrease, fuel consumption will increase, the valve will burn out and many other pleasures of life. Adjustment of the VAZ 2103 engine valves must be done either by a master or with his own hands. Among other problems, Weber and Ozone carburetors constantly require CO adjustment and cleaning. It often happens that the VAZ 2103 engine gets hot, look for the problem in the pump, 99% this is it. Often when the engine in a 2103 misfires, there can be a lot of reasons, most often a burnt-out valve; in any case, you need to measure the compression and show the car to a mechanic. Many VAZ 2103 engine malfunctions repeat the problems of the 2101, due to their close relationship. For a more complete picture and so as not to miss anything, read about the 2101 engine here. Nevertheless, according to popular opinion, the 2103 engine is the most reliable and unpretentious among the classic line of engines, and given the prices for spare parts for the VAZ 2103 engine, you don’t have to wonder why the classics are still driving along our streets.

Operation of the treshka engine

In general, engine operation does not cause any particular problems. Timely completion of routine maintenance, oil changes, adjustment of the VAZ 2103 carburetor, and the use of high-quality motor fuel ensure a long period of engine operation. The operation of the engine also has its own specifics that must be taken into account.

One of the specific features of the 2103 engine is that the timing chain drive does not have a chain tensioner. This leads to the need for periodic inspection, and in some cases, restoration of normal operation is required. The regulatory frequency of such an audit is 10,000 km. With some experience, you can make this adjustment yourself. Here is a step-by-step action plan:

• completely unscrew the tensioner cap nut;
• using your finger to control the position of the tensioner rod, turn the crankshaft 1-1.5 turns in the direction of its rotation;
• as soon as the tensioner rod is sunk, the spring will automatically adjust the chain tension through the shoe;
• tighten the cap nut.

Another important regulatory procedure when operating a VAZ 2103 engine is adjusting the thermal valve clearances. The need to repair the valve arises when there is a distinct knocking sound in the engine at low speeds. Adjustment is carried out in the following order:

1. Align the marks on the gear and camshaft housing.
2. Use a wide feeler gauge of 0.15 mm to adjust the 8th and 6th valves.
3. Rotate the crankshaft 180 degrees and adjust valves 4 and 7.
4. Rotate the crankshaft another 180 degrees to align valves 1 and 3.
5. Rotate the crankshaft 180 degrees again to adjust valves 5 and 2.

You can turn the crankshaft by rolling the car forward in fourth gear.

Tuning the VAZ 2103 engine

Boost engine 2103

There are a lot of methods for modifying the VAZ 2103 engine, like all classics, from boring to a compressor with turbines, but let’s start in order. How to boost the VAZ 2103 engine, the cheapest and simplest tuning of the VAZ 2103 engine was and remains boring the cylinders by 3 mm under a 79 mm piston from a VAZ 21011 or from a VAZ 2106, the output is 1.6 liters. Sharpening further, at 82 mm, will not work due to the too thin walls of the block. To further increase the volume, you need to increase the piston stroke to 84 mm. Increasing the volume in this way reduces the maximum operating speed; a low-end engine is not the best choice for racing, but still. To increase the power of the VAZ 2103 engine by piston stroke, install a VAZ 2130 crankshaft, and also use TRT pistons, the connecting rods are seated to 134 mm. The disadvantages of TPT pistons are their lower strength compared to standard ones, the thermal load on the ring and the likelihood of piston burnout.

Engine boring 2103

- larger diameter piston, standard stroke 1.6 liters. 79x80

75 hp Maximum torque

115 Nm at 3000 rpm With this configuration we get exactly the 2106 engine - larger diameter piston, standard stroke 1.7 liters. 79x84

80 hp Torque engine, non-racing configuration.

How to boost a VAZ 2103 engine by refining the cylinder head

The three-wheel engine uses the VAZ 2101 cylinder head, the main disadvantage of which is that it was developed for small-volume units. Accordingly, the flow sections of the channels do not correspond to the increased volume; this must be corrected by boring and polishing the channels. Polishing and boring the VAZ 2103 cylinder head channels and manifold will significantly reduce intake resistance, engine power increases by 10% throughout the entire range. How to polish and which shafts to select is described in the article “Tuning a VAZ 2101”, due to the identity of the engines, all this applies to the engine of the Lada troika. The modification of the 2103 engine does not end there; a correctly selected camshaft for the 2103, as well as a modified head, can produce more than 100 hp.

Camshaft on VAZ 2103

The rule for choosing a camshaft is simple: in a lower configuration, when the piston stroke is large and it is larger than the cylinder diameter, you need to take a lower shaft with a phase of up to 270, a larger valve lift. Such an engine will turn out to be quite high-torque, urban and will drive much better than the standard, while the high speeds will disappear. Which camshaft to choose for the lower ends, Estonets 1, Nivovsky 213 or something similar in parameters will do. For the top configuration, we accordingly select a wide-phase top shaft with a large valve lift. The standard head without modifications will accept the Mastermotor 48 camshaft, OKB Engine 480 and the like. More wide-phase ones will require additional work. The disadvantages of shafts with a wide phase are traction at the bottom; the angrier the shaft, the worse the ride at the bottom and the more uneven the idle, but by losing the bottom we gain high power at the top. It’s up to you to decide which direction to move and whether it’s worth moving at all; the basic and most popular principles of boosting the 2103 engine were presented to you as simply and easily as possible.

What engine can be installed on a VAZ 2105 instead of the standard one?

The “Five” can be easily equipped with a power unit from any other “classic”, be it a carburetor VAZ 2101 or an injection VAZ 2107. However, connoisseurs of real tuning prefer engines from foreign cars. Power plants from a “close relative” – Fiat – are best suited for these purposes. Its models “Argenta” and “Polonaise” are equipped with engines that fit into our VAZs without any problems.

The engine from Fiat can be installed on the “five” without modifications

Fans of more powerful engines can try to install a power unit from a Mitsubishi Galant or Renault Logan with a volume of 1.5 to 2.0 cm3. Here, of course, you will have to change the mounts for the engine itself and for the gearbox, however, if everything is done correctly, the result will surprise you. But it is important not to overdo it, because each body is designed for a certain load, including engine power.

Well, for those who want to drive a unique car, we can advise equipping their “five” with a rotary power unit. The cost of such an engine today is 115–150 thousand rubles, but no modifications will be required to install it. It will fit perfectly on any “classic” VAZ.

Police and special services vehicles were equipped with rotary engines.

Also check out the design of the VAZ 2105 generator: https://bumper.guru/klassicheskie-modeli-vaz/generator/generator-vaz-2105.html

Technical characteristics of the engine 2103

In the third ICE 2103, the manufacturer AvtoVAZ returned the original cylinder diameter of 76 mm and increased the volume of the combustion chamber, so the technical characteristics of the engine are as follows:

By default, the manufacturer recommends the use of fluids from this table and the parameter values ​​contained in the motor description.

Design features

The engine diagram has the following nuances:

• camshaft from 2101 – one journal between the cams of the second cylinder is unprocessed (hexagon);
• cylinder head – inside the combustion chamber there is a 2 mm stage made by milling;
• drive - timing chain, pump and generator - 8 x 10 mm belt, 944 mm long;
• crankshaft from 2101 – 40 mm crank radius;
• The volume in the engine has been increased compared to the previous version 2101 - the block height is 8.8 mm larger, the piston stroke has increased.

For the domestic “classic” VAZ, there are general standards for what kind of oil to pour into the engine - 5W30/5W40 or 10W40/15W40. The cooling system here is combined (spraying and lubricant supply under pressure).

In this internal combustion engine, the intake manifold has a longer baffle to improve the stability of idle speeds, so the part is not suitable for earlier versions of engines. The exhaust manifold remained unchanged, allowing tuning through the use of a direct-flow muffler to increase the car's drive power.

What cars was it installed in?

The 2103 engine was created for the corresponding AvtoVAZ model, and later began to be installed on other cars of this manufacturer:

• VAZ 21023;
• VAZ 21043;
• VAZ 21053;
• VAZ 21061;
• VAZ 2107;
• VAZ 2121.

Due to technical features, the 2103 engine is always located longitudinally, so it is not used in front-wheel drive models.

Maintenance schedule

The official manual explains the design of the internal combustion engine and the timing of replacing consumables when servicing the engine:

Thanks to its simple design, oil changes and even major repairs can be done yourself. In Soviet times, car enthusiasts practiced engine modernization, the options for which are discussed below.

Malfunctions: signs, causes and solutions

The following breakdowns are typical for the 2103 engine manufactured by VAZ:

Attention: When the timing chain breaks, the engine bends the valve, so the tension and general condition of the links should be periodically checked.

Tuning options

The most popular tuning types are:

• boring the cylinder diameter by 3 mm to increase the volume (for serial piston 2101 or 2106);
• increasing the piston stroke to 84 mm and using a crankshaft from 2130;
• replacing connecting rods with parts 134 mm long.

Thus, the 2103 engine is qualitatively superior to the two previous modifications of the internal combustion engine of the AvtoVAZ manufacturer. The owner of a Zhiguli did not need to think about which oil to use, since the instruction manuals 2101 - 2103 are as similar as possible.

Source

Place in the VAZ engine line

The entire classic AvtoVAZ line is a redesigned engine of the Fiat 124 model. The alteration was by no means cosmetic; already model 2101 (1970) was noticeably different from the prototype. The camshaft was moved to the upper part of the engine, the piston diameter was increased by 3 mm, and its stroke was reduced by 5.5 mm. At the same time, the engine became more responsive due to its short stroke.

Next came the 21011 engine, the cylinder diameter of which was increased by another 3 mm to a value of 79 mm. Due to this, the engine displacement has increased and the power has increased slightly. In 1972, the VAZ 2103 was released - the first four-eyed model of the Zhiguli. It was equipped with a new and most powerful engine at that time with 71 horsepower. The cylinder diameter was returned to 76 mm, and the piston stroke was increased by 14 mm. The working volume was 1452 cubic cm. This engine for a long time enjoyed the reputation of being the most durable. Even a mileage of 250 thousand km is not an incomprehensible amount for it with proper care and normal operation.

The successor to the 2103 engine (engine 2106) differs from it only in the cylinder diameter increased to 79 mm.