The cooling system on any car is important - it helps maintain normal temperature conditions. And last but not least is the thermostat. On older models it is made in the form of a valve with a thermoplate. But when tuning, many drivers install a thermostat from Granta on the VAZ-2114. It works much better, since it begins functioning at much lower temperatures - about 60 degrees. That is why it is called low-temperature. Similar thermostats are installed on new models - Vesta, X-Ray, Largus.
Features of the Grants thermostat
The factory installed thermostats on 14-series cars that were more similar in design and operating principle to those used on 9-series and 10-series cars. These are pump thermostats that operate only when the temperature reaches +90..95 degrees.
The main feature of the Granta thermostat is that it can be installed on a VAZ-2114 without major design changes. But engine performance will be much better, cooling efficiency will be higher. The thermostat's response temperature is approximately 60 degrees, which allows for normal movement in any traffic jams. Even standing for many hours in heavy traffic with the engine running will not cause the antifreeze to boil.
Disadvantages of this method
It is worth noting that when installing a Granta thermostat, you must ensure that the stove faucet is open both in winter and in summer.
The inconvenience is that in order to limit the flow of warm antifreeze when starting the engine into the cabin, in the summer you will have to remove the thermocouple from the thermostat housing, although many do not do this, but simply do not turn on the heater fan. Don't freeze in the salons of your Samaras and good luck with the renovation to everyone!
Content
To speed up engine warming up in winter and improve heating in the car interior, many owners of the 14th model install a grant thermostat on the VAZ 2114. We will talk about what this will do for the car and how to correctly perform such an operation - we will talk in today’s article .
Thermostat from Grant
Features of the replacement
It is necessary to immediately make a reservation that it will be possible to install a thermostat from Granta on a VAZ-2114 only if several changes are made to the design. “Granta” is a relatively modern car, but the VAZ-2114 is a car that was developed in the 70-80s (more than 30 years ago). Therefore, some elements are not interchangeable. And this is quite normal, but not for a Russian person.
There is a way out of any situation. You can install a thermostat from Granta instead of a standard one, and this will require relatively few tools. The advantages are obvious: wear of the engine and its systems is significantly reduced. When metal elements operate at high temperatures, wear occurs more than at low temperatures. The thermostat from Granta simply does not allow the engine to get too hot. On the other hand, the efficiency of the interior heater increases - comfort in winter improves.
Throttle valve heating
Another modification of the “thermos” on the VAZ-2190 is the installation of a heating circuit for the throttle assembly. This is how some car enthusiasts insure themselves against freezing of the throttle valve. To do this, an additional threaded hole is made in the cover of the part, where a fitting is welded through a copper washer to drain the heated liquid. The studs for attaching the “thermos” will also have to be enlarged.
In the end, I would like to note that the engine temperature also depends on the brand of antifreeze used and the viscosity-temperature properties of the oil. Low temperatures in the cabin may be caused by problems in various vehicle systems.
Tools for repair
Before you begin installing the Granta thermostat on the VAZ-2114, you need to partially disassemble the cooling system. And for this you will need the following set of tools:
- Phillips and flathead screwdrivers.
- A set of wrenches - spanners, open-end wrenches, socket heads.
- Silicone sealant.
- Clamps – at least 4 pcs.
- Thermostat from Granta.
If necessary, be sure to purchase new pipes. If the old ones are damaged, then after dismantling they may not be able to be reinstalled. Sometimes rubber is cut with clamps, so tighten as carefully as possible. Be sure to carry out all work on a cooled engine - this way you will ensure safety and the likelihood of getting burns becomes less.
Preparatory work
To install the Lada Granta thermostat on a VAZ-2114, you need to completely remove the old one. You start the repair with the following steps:
- Completely drain the liquid from the cooling system. To do this, alternately unscrew the plugs at the bottom of the radiator and on the engine block. Be sure to place a container under the engine - a cut 10-liter canister or pan. Preferably clean if you plan to reuse antifreeze.
- Free up access to the thermostat by removing the air purification filter.
- Loosen all the clamps that secure the thermostat to the pipes.
- The first to remove are the pipes located below - those that connect the expansion tank to the radiator.
- Unscrew the nuts that secure the thermostat housing after removing all the pipes.
- You can remove the element.
Replacing a pump thermostat with a low temperature one
Many car owners of VAZ 2109, 2110, 2114, etc. models try to replace the standard thermostat with a low-temperature one. This is not easy to do, since the factory does not provide such an option. Therefore, some DIYers install this device from the Lada Granta on older models.
This is done in order to reduce engine wear. When exposed to strong heating, parts gradually begin to deteriorate, and installing a low-temperature thermostat simply will not allow them to heat up too much, thereby preventing their wear.
In parallel with this, the temperature of the coolant will increase, and as a result, the heater in a VAZ 2114, 2110, 2109, etc. car will work much better.
Installing a new element
The procedure is carried out in the reverse order of removal. When replacing a thermostat from Granta on a VAZ-2114, adhere to the same requirements as when installing a conventional one:
- Apply a thin layer of silicone sealant to the surfaces of the thermostat that will be in contact with the pipes. The sealant must work at temperatures up to 130 degrees.
- It is advisable to apply a thin layer to ensure better insulation of the system. Small gaps may appear, so they need to be covered with something.
- Reinstall the thermostat, be sure to place a gasket underneath it and apply a thin layer of sealant to it.
- Wait 20-30 minutes.
- Carefully put on all the pipes and tighten the fastening nuts with slight force.
- Tightening can be done no earlier than after 30-40 minutes, when the sealant has hardened a little. This will prevent it from getting inside the cooling system.
- You can pour liquid into the system no earlier than after 2-4 hours. This time is enough for the sealant to take its working form.
At this point, the installation of the Lada-Grant thermostat on the VAZ-2114 is completed, you can enjoy its operation. But first there are a few more steps you need to complete.
Why install a Granta thermostat on a VAZ-2114?
Thermostat Lada Granta
Any adjustments that are made to the design and interior heating circuit of front-wheel drive VAZ cars are designed to either improve ventilation or improve heating and raise the temperature in the cabin in winter. Almost since the appearance of the first 2108, no changes were made to the cooling system and its architecture , which means that heating the interior remained ineffective.
With the advent of the modernized cooling system of the Lada Granta, the situation has changed for the better and here's why.
Cooling system VAZ-2114
If you look closely at the coolant circulation diagram in a Samara family car, it becomes clear why the heater radiator warms up last. The diagram shows that the cold (small) circle of the heating system does not include a heater radiator; more precisely, the heater radiator is connected in parallel , which certainly does not contribute to the rapid heating of the heater.
At the same time, we also take into account the ability of thermostats to react incorrectly to temperature and leaks in the air ducts, so until the engine warms up and the large full circuit of the cooling system turns on, you can’t even dream of heat in the cabin.
Cooling system for Lada Granta
The thermostat from Granta will allow you to implement an antifreeze circulation scheme similar to Granta’s, and for this you will simply need to install a thermostat from 2190 and purchase some small items.
Nuances when upgrading the VAZ-2114 heater
Let us emphasize that the need to install a thermostat from Granta on the VAZ-2114 and other cars of the Samara family is dictated by the poor performance of the standard stove with the same set of cooling system elements, excluding the thermostat.
Installing a thermostat from Granta will allow you to include the stove radiator in the heating circuit in series, rather than in parallel. Thanks to this, it will begin to warm up and release heat into the cabin from the first minutes after starting the engine, warming up at the same time as it.
Theoretically, the performance of the VAZ-2114 stove, like other Samaras, depends not only on the temperature of the antifreeze, but also on the number of revolutions of the pump, on the degree of its distance from the engine along the circuit , all this reduces the efficiency of its operation. If we successfully tune the stove, we will be able not to warm up the antifreeze in the expansion tank, not to heat it in the main radiator, but to immediately get maximum heat in the cabin.
What is needed to install a Grant thermostat?
If we are convinced that the stove is working very poorly due to an unsuccessful design, we will have to buy some additional elements of the cooling system:
- Grant thermostat with catalog number 21900-1306010-00. It costs about 700-800 rubles.
- New gasket for the thermostat housing.
- Two studs (or bolts, but studs are better) M8x85mm.
Lada Granta thermostat included: gasket for thermostat housing, 2 studs M8x85 mm and tee for return - Lower Grant radiator pipe.
Lower radiator hose - Return tee.
- Sealant, bolt-on clamps, coolant.
Everything should cost no more than 2.5 thousand rubles, but the heating system will work flawlessly . If everything is clear and purchased, we proceed to replacing the thermostat.
Checking the functionality of the thermostat
The first step is to fill the cooling system. To do this, close all drain holes, open the stove tap and fill in antifreeze. As soon as the “gurgling” in the tank stops, start the engine and warm it up to operating temperature - about +95 degrees. Carefully inspect the thermostat itself - there should be no evaporation or antifreeze leaks on it. Monitor its condition for at least a few minutes to make sure the assembly is reliable.
Turn on the stove - you should feel a flow of hot air (and it will be warmer than before). If the thermostat does not work, the air from the heater will come out cold. Only installing a new thermostat will help, since this one has an obvious defect. If you don’t want to spend money on purchasing an assembled thermostat, you can only buy a bimetallic valve.
Features of thermostat installation
According to reviews, the thermostat from Granta on the VAZ-2114 works very well, improving the efficiency of the heating system. But this can only be achieved if all work on installing the device is completed correctly. Be sure to open the heater tap when bleeding the system - this will allow the system to be completely filled with antifreeze. It is also advisable to install the machine so that its rear is lower than the front. Antifreeze will tend to the lowest point, completely filling all pipes. Only when the system is completely filled does the thermostat operate effectively.
The thermostat from Granta is installed on the VAZ 2110 and Priora to warm up the engine faster, especially when driving the “tens”. The thermostat is responsible for the redistribution of liquid flows in the SOD. Experts include frequent leaks and problems with the expansion tank as the disadvantages of this system on the VAZ 2110. Such malfunctions can be eliminated using tuning. The device of the SOD is preliminarily studied.
Why replace the thermostat
The cooling system of a car of almost any brand includes the same components, namely:
- expansion tank;
- tank plug (responsible for releasing pressure);
- radiator;
- electric fan;
- thermostat.
At the same time, the connection diagram of these elements into one single circuit may be different, which causes peculiarities in the operation of the cooling system of a particular car.
Thus, on front-wheel drive VAZ cars, this system has not undergone major changes since 2108, and only during the development of Grant did the designers decide to make significant changes.
If you look at the diagram, it immediately becomes obvious that the basic cooling system 2114 does not include coolant passing through the heater radiator in a small circle.
Cooling system VAZ 2114
This, together with the not entirely correct operation of the thermostat, leads to the fact that a lot of time passes from the moment the engine is started until the comfortable temperature inside the cabin reaches a comfortable temperature. The thermostat from grants 2114 will help correct this situation.
An installed Granta thermostat will help build the operation of the cooling system similar to that of the Lada Granta. In this case, the heater radiator will be connected in series, and not in parallel, and will begin to receive the heat given off by the coolant immediately from the moment the engine starts.
Cooling system of Lada Granta
In addition, the modernized cooling system, thanks to greater heat dissipation, will help avoid possible overheating and boiling of the liquid in the expansion tank.
Technical points
Regardless of the vehicle brand, the ODS consists of the following elements:
- Water pump.
- Electric fan.
- Radiator.
- Expansion tank with plug.
- Thermostat.
On a cold engine, the valve of the latter device closes the pipe going to the radiator. In this case, coolant circulation is observed in a small circle (without a radiator). On the “ten”, the radiator, intake manifold, BDK, and liquid chamber are involved in a small circle. At a temperature of 87°C, movement of the thermostat is observed. This opens the main pipe. The liquid begins to circulate in a large circle. If the temperature reaches 102°C, then the pipe opens completely. The valve stroke is allowed within 8 mm.
Refinement of a budget car
You can install a thermostat from Granta to Priora. To do this, you will need to buy pipes, a gasket, a tee, a temperature sensor, studs, and antifreeze. Since the Granta, unlike the Priora, has a radiator located further from the engine, a long pipe will be required for tuning.
You can splice standard pipes. To do this, use the SOD pump pipe from the “ten”. A straight section with fasteners is cut off from it. Experts attribute the advantages of such tuning to the rapid warming up of the interior and engine; the operating temperature of the internal combustion engine fluctuates within 92°C.
In order to correctly modify the ODS on the VAZ 2110 and Priora, it is recommended to use a book on the operation of these vehicles.
If necessary, it is recommended to consult with auto mechanics.
Modernization of the "tens"
First, the old thermostat is removed from the “tens”:
- loosening the clamps of the radiator outlet and inlet hoses;
- dismantling the device.
The next stage is a comparative analysis of Granta SOD and VAZ 2110. On the first vehicle, the stove is connected in series, and on the second - in parallel. On the Lada Granta, the performance of the heating device does not depend on the pump speed. At the same time, the antifreeze in the expansion tank and radiator does not warm up.
The thermostat replacement process is carried out after purchasing the following parts:
- gaskets;
- lower pipe;
- washers;
- clamps;
- antifreeze;
- ABRO sealant.
The thermostat is installed on the VAZ 2110 after draining the antifreeze. To plug the hose coming from the throttle valve, use an M10 bolt and clamps. The next stage is connecting the hoses and installing the temperature sensor.
Tuned SOD system on a VAZ 2110: the stove inlet is connected to the thermostat, and the drain is connected to the saxophone. The damper heating is not activated. If necessary, connect a hose from the stove radiator to the throttle, which goes to the expander. Then pour antifreeze into the SOD and start the engine. During the warming up process, it is recommended to monitor the temperature of the antifreeze and the tightness of the connections. If there are no violations, then the tuning was successful.
Experts include the following advantages of such a replacement:
- warmth in the cabin;
- stable temperature under different operating modes.
The “new stove” will start blowing warm air at 55°C, and at 70°C hot air will come out of the stove (at idle and while the vehicle is moving). When driving, the engine temperature level will be within 85°C. At the same time, the power unit does not overheat in traffic jams, and the temperature is within 100°C. This helps the fan start.
Additional tuning
To make the thermostat work better, the bypass will need to be modified. A thermostat with 6 holes ensures quick heating of the air in the cabin (due to the reduction of the channel). The volume of liquid that circulates through the valve depends on the diameter of the bypass. As the channel decreases, the flow through the heating device increases. The interior of the “tens” becomes warmer.
When narrowing a thermostat with 5 holes, problems may arise with flushing the thermal element. To narrow the channel to the desired diameter, an aluminum plate is required. It is mounted inside the bypass. To do this, use rivets or cold welding. A new hole is drilled in the plate.
The tuned thermostat consists of a housing with an additional sixth hole (for the pipe), the pipe itself, threads, throttle washer, vehicle head, thermoelement and adjusting bolt. The pipe is screwed in and cold welded.
An additional pipe is installed parallel to the standard one on the stove (to allow the return flow from the heating unit to enter the measuring cavity of the vehicle). To increase the coolant current on a small circle, you will need a throttle washer. This eliminates pressure drop.
The adjusting bolt should rest against the leg of the element. This will allow you to regulate the opening temperature of the vehicle from the outside. Since the standard TS-82s are cold, additional modernization will be required. Experts advise converting carburetor TS-82s into injection ones. To do this, you need to drill and tap a thread for the DTOZH.
A tee is used for tuning. On the “ten” it does not need to be deployed. A thermostat with 6 holes, unlike the previous element, is easier to tune. After reducing this bypass, the coolant temperature will depend on the radiator temperature.
Replacement
Before upgrading the cooling system, you need to purchase a set of spare parts. You will need the following:
- Two steel pins 85 mm long. with metric thread size "M8".
- Original pipe from Granta for connecting to the lower “bathtub” of the radiator.
- Plastic or steel tee for connecting pipes. You can take it from a UAZ car.
- Original "Grant" thermostat with gasket included.
- Set of connecting clamps.
- Sealant.
- Tool set.
- Container for draining antifreeze.
Next is the replacement process:
- Before starting, you must allow the power unit to cool down.
- Open the tap of the lower “bathtub” of the radiator, first placing a clean container under it.
- Wait for the antifreeze to drain.
- Completely remove the air purification filter.
- Loosen the screws of the clamps and remove the pipes from the old thermostat.
- Remove the thermostat from its seat by unscrewing 2 nuts “13”.
- Screw two nuts onto each stud and unscrew. Before unscrewing, it is good to clean the joints from dirt and oxidation.
- Clean the thermostat seat well to prevent oxidation.
- Treat the threads of the new studs with grease and screw them into place of the old ones until they stop.
- Apply sealant to the seat, install a new gasket on top and treat it with sealant.
- Install and secure the thermostat with two nuts.
- Place the Grant pipe on the saxophone tube and secure it with a clamp.
- Place the second end of the pipe onto the tube of the lower “bathtub” and clamp it with a clamp.
- Treat the pipe openings with sealant, put them on the thermostat tubes and secure with clamps.
- Connect the expansion tank drain and the radiator drain using a tee.
- Plug the damper heating pipe. It can be connected to the expansion tank by cutting an additional tee into the line.
- Reinstall the air purification filter.
- After about an hour, you need to set the car on a lift and fill in antifreeze. This position will help fill the engine and radiator without causing air pockets.
- Check the operation of the cooling system.
A very important nuance of the operation of the new system lies in the heating radiator tap. It is strictly forbidden to block it. Now, after modernization, a closed tap will completely disrupt the heating system. There is an option to dismantle the shut-off valve for the summer period. This cannot be done, as the heating will be disrupted. It's better to simply not turn on the heater fan.
Installing a new thermostat and cooling system upgrade has the following benefits:
- On the Lada Granta, the thermostat has no restrictions; the system maintains antifreeze pressure regardless of the temperature (up to 100 degrees) and the rotation period of the water pump. Thus, the problem with antifreeze leakage at the connections of the pipes disappears.
- The car interior warms up much faster. At a temperature of 50–55 degrees, warming up begins, and after 70, full blowing with hot air.
- After opening the shut-off valve, heating of the interior is maintained.
- The engine warms up faster, operates more stably while maintaining power reserves.
When choosing a thermostat, it is worth taking into account temperature fluctuations in the region where the car is used. For places with severe frosts, it is better to choose a device with an opening temperature threshold of 92 degrees. For warmer regions, a thermostat with an opening threshold of 85 degrees is suitable. Do not forget about the errors of some thermostat models. At a specified temperature of 85 degrees, they often open at 80. This affects the engine warming up even in the summer.
