2105 and 2107: Which one to choose?

In the history of the domestic automotive industry, it is difficult to find more iconic models than the classic Zhiguli, released in the period from the late 70s to the early 2000s. Exactly. VA 2105 and VAZ 2107 They have become symbols of the era, affordability and reliability that novice motorists and collectors still have to face. Outwardly, these machines seem almost identical, and the untrained eye often confuses them, calling all models "sevens" or "fives" by inertia.

However, if you are planning to buy a retro car for restoration or just want to understand what the design differences between the two versions are, a superficial look will not be enough. The difference 2105 and 2107 lies not only in the shape of bumpers and the presence of moldings, but also in the approach to the layout of the cabin, aerodynamics and even in the nuances of the operation of some engine components. Understanding these differences will help you make the right choice when buying or repairing.

In this article, we will examine in detail the evolution of the “classic”, from the “five”, which was supposed to become a mass workhorse, to the “seven”, positioned as a luxury version. You will learn why the taillights are different, how the dashboard has changed and whether it is worth looking for a seventh model at all, if the price is higher. Technical specifications The appearance will be analyzed in as much detail as possible.

Evolution of design: external differences of the body

The first thing that catches the eye when comparing is the design of the front part of the body. VA 2105The silk, which appeared earlier, received more angular, chopped shapes, designed to correspond to the fashion of the late 70s for rectangular optics. The bumpers here are chrome, without fangs, which made the appearance of the car stricter and easier. At the same time, VAZ 2107The next one received a grille of a different shape, reminiscent of premium sedans of that time, and more massive bumpers with plastic linings and “fangs”.

The rear of the cars also has significant differences that cannot be ignored. The "five" block headlights have a rectangular shape and are located vertically, occupying the entire height of the trunk lid at the edges. The "Seven" also flaunts horizontal lights divided into segments, which visually expands the car and makes it look more modern for the early 80s. It is on this basis that it is easiest to determine which model is in front of you.

⚠️ Note: When buying a body, pay attention to the rapids and spars. Despite the similarity, the geometry of the rear of the roof and the trunk of the 2105 and 2107 differ, so the trunk lids and rear wings are not interchangeable without serious body editing.

Aerodynamics and decorative elements are another area where the difference between 2105 and 2107 is noticeable. The seventh model was often equipped with a plastic body kit, including moldings along the sides and decorative elements on the thresholds, which should indicate the increased status of the owner. In addition, later versions of the 2107 began to install aerodynamic spoilers on the trunk lid, which was never on the 2105 in the factory version.

Interior: From Spartanism to Relative Comfort

The cabin is where the driver spends the most time, and the differences between the models are most acute. VA 2105 It inherited many of the solutions from earlier classics, offering the driver a rigid seat with low backrests and minimal lateral support. The dashboard here is made of black plastic with round instrument wells, which looks quite archaic by the standards of the 80s. The upholstery of the doors is also simple, often dermatinous, without pockets for trifles in basic trim levels.

In turn, VAZ 2107 It was a much more thought-out interior, which at that time was considered a model of comfort for the budget segment. Here appeared a high torpedo with rectangular cells for instruments, which improved visibility and ergonomics. The seats received high backrests with integrated head restraints, which positively affected the safety and convenience of long-distance trips. The steering wheel has also become more modern, although it retains the thin rim characteristic of the whole classic.

The materials in the finishing of the "seven" were also often better quality. While 2105 could have been tougher and more creaky, 2107 used softer compositions, and the center console added extra elements such as a trifle shelf above the glove compartment. Ventilation of the cabin The seventh model was also improved by a modified design of the blower deflectors, although the efficiency of the stove remained comparable in both models.

⚠️ Warning: When buying a car with your hands, be sure to check the condition of the torpedo. Plastic on the old "Zhiguli" over time dries up and cracks, especially in the sun, and finding the original panel in good condition for 2107 is now more difficult and expensive than for 2105.

Engines and specifications

Under the hood of these cars could hide a whole range of engines, and this is where the difference 2105 and 2107 can be both minimal and significant. The basic engine for the "five" for a long time remained the engine of 1.29 liters (VAZ-2105), equipped with a belt drive GRM, which was a novelty for that time. This engine was less noisy than the chain analogues, but required strict control over the condition of the belt.

For VAZ 2107 More powerful versions of engines with a volume of 1.5 and 1.6 liters (VAZ-2103 and VAZ-2106) were more often intended. These units were usually equipped with a chain drive GRM, which was considered more reliable and durable, albeit more noisy. Engine power In the top versions of the "seven" reached 75-77 horsepower, against 64 forces in the base 1.3-liter "five", which provided better acceleration dynamics and the ability to feel more confident on busy tracks.

The food system also varied depending on the year of production. Early models of both types were equipped with carburetors "Ozone" or "Solex", which required regular adjustment. In the late years of production, especially in the 2000s, VAZ 2107 They began to massively install injection systems, which radically changed the characteristics of reliability and fuel consumption. VA 2105 In the injection version was extremely rare and was rather experimental or small-scale modification.

Below is a table comparing the main parameters of the most common modifications:

Parameter	VAZ 2105 (1.3 l)	VAZ 2107 (1.5 liters)	VAZ 2107i (Injector)
Power, HP.	64	71	73
Torque, Nm.	94	104	105
GRM's	Belt	Chain.	Chain.
Acceleration 0-100 km/h	16.0 seconds	15.0 seconds	14.5 sec.

Chassis and handling

Structurally, the suspension of both models remained almost identical, inheriting the scheme from its predecessors: independent on the front, on double transverse levers, dependent on the rear, on longitudinal jet bars. However, the difference 2105 and 2107 may be manifested in the details of the configuration and components of later years of release. VAZ 2107 It was often equipped with stiffer springs and stability stabilizers, which was dictated by a slightly larger weight and orientation to a more dynamic ride.

The braking system has also undergone changes. If the early versions of both cars had drum brakes at the rear and disc brakes at the front (without a vacuum amplifier or with a small amplifier), then the later versions of the car were not designed. VAZ 2107 received more efficient calipers and an increased diameter of brake discs. This allowed to reduce the braking distance, which is critical at modern flow speeds, although on dry asphalt the difference may not be as noticeable as on wet roads.

Steering in both models initially lacked power, making parking and maneuvering at low speeds a physically costly process. However, on the "sevens" of the last years of release, there was sometimes a steering mechanism with a changed gear ratio, making the steering wheel a little more sharp. It is also worth noting that clearance Both models are the same and are about 170 mm, which allows them to confidently overcome the obstacles typical for Russian roads.

⚠️ Attention: The rear suspension on the classic is sensitive to overload. Do not exceed the permissible weight of the cargo, otherwise the jet bars can be deformed, and the bridge will lead, which will lead to the car sideways and uneven wear of the rubber.

Electrical equipment and reliability

The electric circuit of the "classic" is famous for its simplicity and maintainability, but there are nuances here. VA 2105 early VAZ 2107 They used generators with a contact voltage control system that required periodic brush maintenance. Later versions, especially the injector "seven", switched to alternators with built-in regulators and diode bridges, which significantly increased the reliability of the onboard network.

Lighting is another point of difference. The headlights on 2105 and 2107 have different seats and mounts. If the "five" used rectangular block headlights, which often suffered from fogging due to leakiness, the "seven" received more advanced optics with better focusing of the light beam. However, the quality of the plastic lenses on both models in budget versions left much to be desired, requiring replacement or polishing over time.

The wiring in the cabin also has differences in tourniquets. Due to the different shapes of torpedoes and dashboards, wire harnesses are not interchangeable without modifications. This is important to consider when restoring or replacing burnt wiring. Safety locks In older versions, pin type was used, which were often oxidized, whereas in later models they switched to more reliable flag fuses.

Problem with the ignition lock contact group

One of the common diseases of classics, including 2105 and 2107, is the burning of contacts in the ignition lock due to the high current load. This leads to the fact that the starter stops spinning or not all devices work. It is recommended to install additional relays in the starter circuit.

Market value and feasibility of purchase

In the modern market of retro cars and budget vehicles, the difference between 2105 and 2107 is manifested primarily in price. VAZ 2107 It is traditionally more expensive, and this is due not only to the later year of production, but also to the perception of the model as more prestigious and comfortable. Buyers are ready to overpay for the appearance, the best interior and the presence of an injector in later versions.

VA 2105 It can often be found in a more deplorable state or at a much lower price, as it is perceived as a utilitarian option. However, for collectors, it is the well-preserved "five" that may be of greater interest because of its lower prevalence in ideal condition compared to the mass "sevens".

When choosing between these models, the availability of spare parts should also be considered. Nana VAZ 2107 body elements and interior details are easier to find, since the model was produced longer and was in great demand. For the 2105, some lining, headlights or interior parts may prove to be a deficit, especially if it is about original components, rather than analogues.

Frequently Asked Questions (FAQ)

Can I install the engine from 2107 to 2105?

Yes, it's technically possible. The engines of the VAZ-2103 and VAZ-2106 series (1.5 and 1.6 liters) perfectly stand in place of the 2105 engine (1.3 liters). Replacement of attachments will be required, perhaps, the revision of the exhaust system and clutch, since the seats in the cylinder block of the "classic" are unified.

Why 2105 belts and 2107 chains?

This is a design feature of the engines. The 2105 (1.3 L) was originally designed with a belt drive to reduce noise. The 2103 and 2106 engines, which were more often put on the 2107, were developed earlier and had a chain drive, which is considered more reliable at high loads, although it requires lubrication and adjustment.

Are the bumpers 2105 and 2107 interchangeable?

No, bumpers in these models are not interchangeable without a serious revision of the body. The 2105 has them attached directly to the body and have a different shape, and the 2107 has more massive ones, with other attachment points and often with plastic elements ("fangs").

Which model is more reliable in operation?

Both models have a high maintenance capability. However, VAZ 2107 In the later years of production with an injection engine will be more reliable and economical in everyday operation thanks to the engine control system. Both models require frequent adjustment.

Should I buy 2105 for restoration?

Absolutely. A good "five" in its original state is now valued by collectors even higher than the usual "sevens", due to its angular, brutal appearance and less prevalence in its ideal form. It is a great candidate for recovery in the stock form.