DIY 2114 cylinder head repair

In detail: do-it-yourself cylinder head repair 2114 from a real master for the site my.housecope.com.

The cylinder head is a cover designed to enclose the cylinder block. It is also indispensable for some other functions that are no less important in the operation of the vehicle's power plant.

During operation of the engine, an air-gas mixture is supplied to the head itself, and exhaust gases are removed thanks to the exhaust manifold.

The cylinder head is a fairly durable working unit, so it does not need to be repaired or completely replaced so often. On cars manufactured in the territory of the Russian Federation, the cylinder head has to be removed due to cylinder leakage or when the gasket is worn out.

And sometimes the cylinder head is removed for rework. Removing this unit on a vehicle with any number of valves is fairly easy, although some skill may be required.

In this regard, if you needed to remove the cylinder head yourself for the first time, then it is best to do this under the control of a person who has previously faced a similar task.

In order to repair or replace the cylinder head, you will definitely need some tools that are not so often found in a novice car enthusiast. Namely:

A set of keys.
Screwdriver.
Torque wrench.
Socket heads.
Torx.

Disconnect the negative terminals from the storage battery.
The piston of the first cylinder is set to the top dead center position.
All the coolant is drained off.
The fuel pressure decreases.
The exhaust pipe is disconnected from the manifold.
The cylinder head cover is being dismantled.
All pipes, electric wires and hoses are removed. But before doing this, you need to remember or note what and where it was originally connected. This is done in order to avoid possible confusion during reinstallation.
There are three bolts on the camshaft belt cover that must be unscrewed and the cover itself removed.
The timing belt is removed and completely retracted.
It is imperative to secure the shafts against possible rotation.
The pulley is attached to the camshaft with bolts that must be unscrewed and then removed.
The nut securing the rear camshaft cover is unscrewed.
Unscrew the remaining screws and completely remove the cover.
Slightly loosen the tension of the ten bolts holding the head.
Then each individual bolt is unscrewed in turn and removed along with the washers.
The head is released and removed.
If the head is attached directly to the gasket, insert a screwdriver or any other long tool. Further, this tool must be used as a lever in order to slightly raise the head, and then completely remove it.
Very carefully, so as not to scratch the surface of the head, it is necessary to remove the remnants of the old gasket. It is best to use a special liquid for this.
We put a new gasket in place.
We make sure that the shafts are in the top dead center position, and all valves on the first cylinder are completely closed.
We put back the bolts.
Using a torque wrench, start tightening the bolts one by one.
We put in place all the removed equipment.
We adjust the valve drive clearances and tension the camshaft belt.

Video (click to play).

As you can see, repairing the cylinder head on a VAZ-2114, which has 8 valves, is a fairly simple, albeit slightly laborious task, which means that everyone who has at least a little idea about this unit can cope with it.

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The cylinder head should be well cleaned of carbon deposits from the surfaces of the combustion chambers and exhaust valves. Also remove residual oil from the oil passages.

On the necks and supports of the camshaft and in the holes where the valve pushers of the Lada Samara 2 are located, there are no chips or damage.

To be sure, check that the antifreeze does not get into the oil channels, for this it is necessary to plug all the holes in the coolant circulation. With the help of a sediment, at a pressure of 0.5 MPa, pump water into the jacket of the coolant circulation, while within 3 minutes there should be no hint of water leakage from the cooling jacket.

When checking the tightness of the cylinder head using compressed air, it is also necessary to plug all the coolant circulation jackets with special plugs. Pick up a tank, heat the water in it from 60 to 80 degrees and immerse the head in a tank of water. After 5 minutes, blow air into the head with a spray. The air pressure should be between 0.15 and 0.2 MPa. No bubbles should form on the surface of the water for 2 minutes.

Valve seats
I - new saddle
II - saddle after repair
a - intake valve seat
b - exhaust valve seat

Grinding the seats is possible if the chamfers are slightly scratched or damaged.

The procedure for grinding the chamfers of the saddles.

- Before starting milling, insert the stem into the valve sleeve. Different cutters are used for the outlet and outlet valve seats. Route 15 ° chamfer first

- then mill the chamfer 20

- Grind the 45 ° chamfer, observing the diameters of 34 and 30.5 mm. Chamfer grinding is performed with canonical wheels.

Only after the grinding contour has been positioned on the chamfer can the machine be switched on. After finishing grinding, rinse and blow the chamfers with compressed air.

In order to check the gap between the rods and bushings, it is necessary to measure the diameter of the rod and the bore of the bushing.

The clearance for the valve outlet bushings is 0.022 to 0.055 millimeters, for the valve outlet bushings it is 0.029 to 0.062 millimeters. The maximum allowable clearance is 0.3 mm.

Pressing out the guide bushings

If the gap exceeds 0.3 millimeters, it is necessary to replace the VAZ 2113 valve, if the gap is not eliminated, it is necessary to replace the bushing. To replace the bushing, use the shipment to press in and out the bushing.

Press in the guide bushings with the fitted retaining ring until it stops in the cylinder head body.

After the bushing is pressed in, grind the valve seats.

Always install new valve seals. Valve seals are installed using a special shipment.

Inspect the valve, if the stem is not damaged and there are no cracks on the surface of the poppet, then the valve can be reused.

Limits for grinding valve chamfers
I - inlet valve
II - exhaust valve

If the valve has small scratches, the valve can be sanded.

Data for checking the outer spring

Basic data for checking the internal valve spring

To check the deformation of the springs, use the loads

If the pushers are not scratched, they can be reused, otherwise replace the pushers with new ones.

Cylinder head retaining bolt

The length of the bolts should not be more than 13.55 centimeters, if the length exceeds the indicated dimensions, they should be replaced with new ones.

Shims

It is allowed to install adjusting washers on the cylinder head if no wear or scratches are found on them.

The cylinder head is removed for its repair, to replace the head gasket, as well as during engine overhauls.

We prepare the car for work and disconnect the wire terminal from the negative terminal of the battery
Drain the coolant from the engine
Removing the air filter
Remove the intake manifold and the exhaust manifold from the engine. If necessary, the cylinder head can be removed as an assembly with parts of the power supply system and the exhaust manifold.
Remove the cylinder head cover
On engines with phased fuel injection, disconnect the wire block from the camshaft position sensor
Disconnect the wiring tips from the coolant temperature sensor For convenience, disconnect the wiring harness block from the knock sensor and move the sensor wiring harness to the side.
Disconnect the tip of the wire from the coolant temperature gauge sensor
Using a 13 mm socket wrench, unscrew the nut securing the "ground" wire to the engine and remove the wire tip from the stud.
Using a 13 mm socket wrench, unscrew the two nuts securing the branch pipe.
We remove the pipe from the pins of the cylinder head and, without disconnecting the hoses, take it to the side.
Remove the sealing gasket from the studs.
Remove the camshaft pulley
We unscrew the nut and bolt of the upper fastening of the rear cover of the timing belt
We remove the oil level indicator.
Using a Torx E14 socket wrench with a narrow head, unscrew the ten bolts securing the cylinder head. Some of the cylinder head bolts can only be loosened with a socket wrench with a narrow head. If such a key is not available, remove the camshaft and then remove the cylinder head bolts.
Pulling the rear cover of the timing belt slightly to the side, remove the cylinder head.
Remove the cylinder head gasket
We take out two guide bushings.

We wash the cylinder head from dirt and deposits with kerosene or diesel fuel.
We remove the remaining oil and coolant from the threaded holes of the cylinder block (for the bolts of the block head).
We clean the resting planes of the head and cylinder block from the remnants of the old gasket, degrease the planes with a solvent. Always use a new gasket when installing the cylinder head. Oil should not come into contact with the surface of the gasket.
We install the guide bushings of the head into the bore of the cylinder block.Tightening sequence of the cylinder head bolts
We put a gasket on the cylinder block, while the guide bushings must go into the corresponding holes in the gasket.
We install the head on the cylinder block. Slightly moving the head from side to side, we ensure that the guide sleeves enter the corresponding holes in the head. Reuse of the cylinder head bolts is only allowed if their length does not exceed 135.5 mm.
We measure the length of the bolts with a caliper or bench ruler. Replace bolts longer than 135.5 mm.
Before tightening, we dip the threaded part of the bolts into engine oil, then let the oil drain, after waiting about half an hour.
We install bolts with washers in the holes of the head.
Using a torque wrench, tighten the head mounting bolts (in the sequence shown in the photo) in four steps: - tighten the bolts to a torque of 20 Nm (2 kgfm);

- tighten the bolts with a torque of 69.4–85.7 N · m (7.1–8.7 kgf · m);

- once again turn the bolts 90 °.

11. Further assembly is carried out in the reverse order.

Probably, many motorists were faced with the fact that it was time to change the cylinder head gasket on the VAZ-2114. This procedure is time-consuming and not everyone can do, but if you wish, you can cope with this process yourself. Of course, you will need to remove the head of the block itself and perform a number of operations that require some knowledge of the structure of the engine.

The video will tell you how to replace the head gasket, and also tell you about some of the subtleties and nuances.Near cylinder head gasket (engine removed)In order to understand the process and principle of replacing engine gaskets, you need to know the structure and sequence of parts in the main power unit.So, consider the device of the VAZ-2114 motor:Engine circuit and deviceSo, when you understand the main structure of the engine, you can go directly to the process of replacing the gasket. But first you need to decide on the tools. So, what is needed to complete the procedure: a torque wrench, a set of open-end and spanner wrenches, a set of heads and a ratchet, nozzles from the Torx set, screwdrivers, coolant for topping up, a new gasket, rags, containers for draining liquids.Now that everyone has acquired, you can proceed directly to the replacement procedure:We de-energize the car by removing the negative terminal from the batteryWe carry out the removal of the timing caseWe expose TMV points according to the schemeWe release the fuel pressure by unscrewing the pipesDisconnect the front pipe from the manifoldDismantle the valve coverWe carry out dismantling of the throttle assemblyDismantle the air filterRemove the fuel rail with injectors assemblyHaving unscrewed the fastening nut, we dismantle the camshaft gear Image - Do-it-yourself cylinder head repair 2114

We dismantle the thermostat

We carry out dismantling of the cylinder head together with the gasket

Cleaning the surface from the remnants of the gasket

Note! Along the way, you can inspect the condition of the pistons and combustion chambers for carbon deposits and soot. If necessary, "throw in" the oil scraper rings.

Installing a new gasket.

Installing a new gasket

Do not forget that the timing belt must be tightened with a certain effort, in detail about this in the material: "we tighten the timing belt on the VAZ-2114 with our own hands."

In addition to the original spare part, there is a set of analogs that can be installed on the VAZ-2114. Some of them are of high quality, and the service life is much longer than the original. So, let's consider what options for gaskets exist for the 14th series of Lada cars.

21083-1003020 - catalog number of the original head gasket. It fits perfectly into the seats and is recommended for installation by the manufacturer. It is produced at the AvtoVAZ plant and the retail price is 600 rubles.

In addition to the original part, there is a sufficient number of analogs that are certified, and as practice shows, are installed on cars. So, let's consider which cylinder head gaskets can be installed instead of the original:

Elring cylinder head gasket

When changing and choosing a cylinder head gasket, it is always necessary to look at the quality of the product. But not everyone knows what properties it should have. Consider the basic requirements for this spare part:

Long service life.
Elastic deformation.
Resistant to hot gases.
Water and oil resistant.
Resistance to chemical reactions and influences.

If the selected head gasket meets all standards, then it can be installed on the vehicle.

So, when all the points have been considered, it remains to list the signs of failure of the cylinder head gasket:

A large amount of white smoke comes out of the muffler.

White smoke from the muffler - a sign of a malfunction of the cylinder head gasket

Emulsion on the filler cap

Replacing the head gasket on a VAZ-2114 is quite difficult, since it is necessary to know the design features of this engine, as well as to have experience in carrying out such operations on similar engines.

The choice of the gasket should be approached seriously and carefully, since the normal operation of many nodes depends on its condition. If the process described in the article seemed difficult enough and the motorist is not able to carry out the operation on his own, it is recommended to contact a car service, where they will help and do everything quickly and efficiently.

The cylinder head gasket (cylinder head) is undoubtedly an important part of any car - the VAZ 2114 is no exception - because it is thanks to it that 3 systems remain sealed at once: gas distribution, cooling and lubrication (oil). Hence, it is quite natural that this element is a disposable part, so in case of some kind of malfunction, do not even try to fix it, but immediately replace it.

Bubbles are a sign of leaks, and since the cylinder head gasket must ensure this tightness, most likely, it is in it.

Exhaust gases escape through the cylinder head gasket.

The situation is rare, but possible, especially for those motorists who like to tighten the fastening nuts.

This sign indicates that antifreeze has entered the engine cylinders. Perhaps this hit occurs just through the gasket of their heads. I advise you to read the article: White smoke from the exhaust pipe.

When checking the oil level, a white emulsion like foam is found on the dipstick.

This can happen again due to leaks in the cooling system, which can be the result of a damaged cylinder head gasket or (less often) the presence of a crack in the block itself.

Reduced engine power and increased fuel consumption.

They can be a sign of a variety of breakdowns, including breakdown of the gasket between the cylinders.

The coolant (coolant) is oily.

Like all of the above signs, it does not require an unquestioning replacement of the cylinder head gasket, but calls for a thorough diagnosis.

1. De-energize the car by removing the negative terminal from the battery.

2. Fix the piston of the 1st cylinder in the TDC position.

4. Make sure the supply pressure is low enough. To do this, look at the rear end of the fuel rail for an element that looks like a wheel tire spool with a cap. Unscrew this cap, press on the spool and drain the fuel into a container prepared in advance. Screw the cap back on.

Attention! Be extremely careful and attentive with this item. The first couple of hours after stopping the car, do not even touch the spool, you will burn yourself - the fuel will fly out in the form of a sprayed torch and is quite hot!

5. Disconnect the muffler pipe from the exhaust manifold. To do this, unscrew the nuts securing the bracket with the pipe under the bottom of the car. After removing the bracket, removing the corresponding nuts, remove the clamp and release the front pipe.

6. Remove the cylinder head cover by simultaneously disconnecting the intake and exhaust manifolds, the throttle assembly and the receiver.

7. Loosen the clamp of the air inlet to the throttle pipe and disconnect the plug from the mass air flow sensor, remove the pipe from the throttle assembly with an air intake hose and an air filter.

8. Using a screwdriver and a “10” hex socket, disconnect the hoses coming from the air outlet, loosen all clamps and unscrew all fastening screws together with washers.

9. Disconnect the harness pads from the sensors: throttle position, oil level and pressure, coolant temperature, knock and crankshaft position - as well as the idle speed control and injector harness.

10. Remove the lugs of the explosive wires from the spark plugs.

11. Pull the harness out from under the receiver.

12. After unscrewing the fastening nuts, remove the timing cover, and then the belt itself.

13. Having fixed the camshaft toothed pulley from scrolling, unscrew its fastening bolt together with the washer.

14. Carefully, without touching the oil seal, remove the pulley from the camshaft.

15. Having removed the mounting bolts, dismantle the rear cover of the camshaft drive.

17. Using the hexagon, loosen the cylinder head bolts in sequence - half a turn. And then, in the same sequence, unscrew them to the end. Such slowness and order will exclude the possibility of deformation of the cover.

18. Remove the cylinder head and using a screwdriver, using this tool as a lever, disconnect the cylinder head from the gasket.

nineteen.Clean all surfaces and elements released during the repair, remove oil from the threaded holes.

20. Place a new gasket on the dowel sleeves (the hole for the oil passage in it should take place between the 3rd and 4th cylinders).

21. Make sure that the camshaft and crankshaft are still in the TDC position. To do this, inspect 1 cylinder. Both valves must be closed.

22. Fasten the cylinder head together with the gasket with the retaining bolts, pre-lubricated with a small amount of engine oil. Tighten the bolts in 4 stages as follows:

Stage 1 - with a force of 20 N • m (2 kgf • m);
Stage 2 - with a force of 69.4–85.7 N • m (7.1–8.7 kgf • m);
Stage 3 - rotate 90 degrees;
Stage 4 - finally put the squeeze, turning another 90 degrees.

23. Reassemble all removed items in reverse order.

As you can see, replacing the VAZ 2114 cylinder head gasket is a rather laborious and complicated process, so if after reading this article you still have even the slightest doubts and / or questions, it is better to entrust this work to professionals.