For both passenger cars and trucks, they have a long service life. 417, the UAZ engine is also considered a durable unit. When creating it, the designers created the necessary conditions for carrying out one or even several major overhauls. Thanks to excellent power indicators and other technical and operational characteristics, carburetor engine 417 is widely popular among car manufacturers and car owners.

Technical characteristics of the uaz 417 engine

The modern UMZ-417 engine is produced instead of the UMZ-414. The differences between them are very few, they are as follows:

1. UMP 417 has an increased compression ratio: 7 instead of the usual 6.7.
2. The camshaft is of a different design.
3. Intake valves with a diameter of 47 mm are used instead of 44 and 36 mm.
4. The exhaust valves have a diameter of 39 mm instead of 36.
5. The carburetor consists of two chambers.
6. Used by air filter other modification.

UMZ 417 engine technical characteristics:

List of major modifications of the 417 engine

Advantages and disadvantages of the UMZ 417 engine

The production of this unit began in 1989 and to this day it continues to be produced at the Ulyanovsk Motor Plant. Due to the use of aluminum alloys for the manufacture of body parts, the UMZ 417 engine has a relatively low weight. It has the following advantages:

• increased efficiency;
• reliability;
• good endurance;
• sufficient power, etc.

All of these factors are quite suitable for unpretentious domestic SUVs.

However, along with multiple advantages, the 417th engine also has certain disadvantages:

1. Overheating of the motor during operation.
2. Unfamiliar knocks.
3. Vibration.
4. Increased wear of working units and parts.

Most often, the following elements fail:

• bearings;
• camshaft cams;
• springs;
• sealing parts, oil seals, gaskets;
• washers, etc.

Advice: In order to avoid breakdowns leading to costly overhauls, it is recommended to periodically check the condition of the working units and engine systems internal combustion.

What is the difference between UAZ 417 and ZMZ 402 motors

It often happens that craftsmen replace a failed UAZ 417 engine with a ZMZ 402. This becomes possible due to the high unification of these motors.

It is known that the 417 and 402 engines are very similar to each other, but there are also some differences:

1. When installing cylinder liners in the body of block 417, rubber rings are used, while ZMZ 402 has copper gaskets here, which provide better fixation.
2. The ZMZ flywheel has a smaller diameter.
3. The ZMZ-402 block body is equipped with stiffeners. The UMP 417 unit has ribs only on model parts latest issues... Here the number of ribs ranges from 3 to 4 pieces.
4. The ZMZ engine uses glass-shaped oil filters. The UMP has a filter borrowed from the VAZ 2101. The second solution is more convenient for replacing the entire device.
5. The engines have different coolant supplies to remove heat from the working cylinders.
6. AT motor ZMZ valves with large poppet diameters are used. Compared to the UAZ 417 engine, there is a better supply of air-fuel mixtures to the combustion chamber.
7. The exhaust system of ZMZ 402 engines is equipped with two exhaust manifolds, separate from each other, serving cylinders: 1-4, 2-3. Thanks to this solution, the power unit develops a power of 100 liters. from. when running on gasoline A-93, and 90 liters. from. - on the AI-80, respectively.

What is the reason for the rapid wear of the UAZ 417 engine

Among the main factors in the first place is the use of engine oil of inappropriate quality or failure to meet deadlines service internal combustion engine. The next problem is considered to be late seeking qualified help in the event of minor flaws in work. power unit... It is known that at the slightest knock and even after it stops, the defect does not disappear.

Repair of the UAZ 417 engine is divided into types:

1. Urgent care.
2. Partial renovation.
3. Major overhaul.

In the first case, the flaws that have appeared in the operation of the motor are eliminated. This is enough to temporarily prolong its viability. Such assistance is provided to the motor if a breakdown occurs on the way so that the car can be delivered to the nearest service center for subsequent diagnostics and elimination of identified malfunctions.

In case of partial repairs, the motor is checked at special stands. After that, selective dismantling of worn out units and parts is carried out in order to replace them with new parts.

Important: Overhaul is one of the most time consuming procedures. For its implementation, highly qualified auto mechanics are involved, familiar with the features of the device and the characteristics of the UMZ 417 engine.

Stages of overhaul of the 417th engine

Power unit overhaul operations are carried out in a specific sequence:

• machine diagnostics in order to identify a defect;
• removing the engine from the car;
• washing and cleaning of parts, units;
• breakdown analysis;
• replacement of parts with irreversible breakdowns with new parts;
• installation of the engine in its original place.

Diagnostics is one of the most demanding labor-consuming process. The more accurately the diagnosis is made, the faster and better the engine repair will be. Upon completion of the repair of the 417 UAZ carburetor engine, mandatory adjustments are made to the following units:

1. Ignition breaker. At the same time, its position is adjusted and a certain angle is set.
2. Number of revolutions crankshaft in mode idle move.
3. Emission toxicity level.

Maintenance of UAZ 417 engines

The list of maintenance work on the internal combustion engine includes the following items:

1. Checking the level and condition of the engine oil.
2. Changing the lubricant.
3. Filter elements.
4. Spark plugs.
5. Timing belt.
6. Timing guide rollers.

According to experienced specialists, the engine oil should be changed in accordance with the requirements set out in service book vehicle... It says that the oil in the engine changes after the next run of the car of 10,000 kilometers, this will require 5.8 liters of working material. This document also lists the grades of recommended lubricating fluids:

• М-8В SAE 15W-20;
• M-6z / 12G SAE 20W-30;
• M-5z / 10g1;
• M-4з / 6B1 SAE 15W-30.

The UAZ 417 engine has a standard oil filter under the name NAMI VG-8-R-1. Along with changing the engine oil, it is recommended to change the filter elements. The oil filter should not be cleaned, but replaced with a new, similar or imported sample. The candles for the UAZ 417 engine are also subject to replacement.

Important: Before changing the engine oil, check its level and general condition. This is necessary to determine how worn out the metal surfaces of the working parts of the internal combustion engine. At the same time, the expediency of carrying out overhaul power unit.

Opportunities for tuning the UAZ 417 engine

Many car owners want to improve own car in terms of design design, as well as improving power indicators. Most often, tuning is done in order to change the technical characteristics of the motor.

Among the most expedient measures, the first place is occupied by the option of replacing the existing power unit with an imported analogue. For the modernization of UAZ vehicles, the 2L-T engine from Toyota is best suited.

During the Soviet era, UAZ cars were very popular. The power units of the Ulyanovsk () or Zavolzhsky (ZMZ) engine plants were installed on them. The most famous of them - the UMZ 417 UAZ carburetor engine of the UAZ-469 models (in everyday life - "goat" or "bobby") and UAZ-452 (in the driver's jargon - "loaf") - has been produced since 1989 in various modifications, some of them are still in operation.

Specifications

The engine is installed on UAZ-452, UAZ-469.

Description

The UMZ 417 engine is a classic four-cylinder power unit with an in-line arrangement of cylinders, the pistons of which rotate one common crankshaft.

The motor is equipped with a carburetor, a contact ignition distributor and an OHV-type gas distribution mechanism with a single lower camshaft.

The body and cylinder head of the UMP 417 are made of aluminum. The casings, made of cast iron, are fitted into the block through rubber rings, which reduces its strength and is one of the main design flaws of this power unit.

In general, the design of the UMZ 417 engine is similar to the design and is further development UMP 414.

UMP 417 differs from engine 414:

• increased compression ratio;
• another camshaft;
• enlarged intake valves.

In some modifications, the UMP 417 was equipped with crankshaft from the later 421 motor, which was installed without the use of stuffing box packing.

As for the power unit produced by the Zavolzhsky Motor Plant (ZMZ 402), there are even fewer differences.

The main difference is that the cylinder liners are set through copper gaskets, which made the cylinder block stronger.

A significant disadvantage that affects performance characteristics motor, is the use of a type 4-1 exhaust manifold, which reduces its power at medium and high speeds.

All other components - camshafts and crankshafts, pistons, connecting rods, rings, pushers and rods - are the same. There are differences that are cosmetic in nature and do not affect the operation of the power unit.

Among a large number modifications of the UMZ 417 engine are considered the main ones:

1. UMP 417.10 - was installed on UAZ 3151 vehicles (gasoline A-76);
2. UMP 4175.10 - operated on Gazelle vehicles. It has increased power (98 hp) and has a compression ratio of 8.2, which is necessary to use A-92 gasoline;
3. UMZ 4178.10 is the most common modification with a two-chamber carburetor, which allows:

• Use the cylinder head from the UMZ 421 engine, which has enlarged exhaust valves with a diameter of 39 mm (UMZ 4178.10-10). The crankshaft in this modification is equipped with an oil seal instead of stuffing box packing.
• To aggregate the motor, for example, with a power steering (UMZ 4178.10-03) or a diaphragm clutch (UMZ 4178.10-52).

Maintenance

Maintenance of power units produced by UMP is not complicated and comes down to regular:

• changing engine oil - after 10 thousand kilometers;
• adjusting the thermal clearances of the timing valves - after every 15 thousand kilometers.

Malfunctions

Tuning

Carburetor power units are rarely tuned to increase their power. This is due to the fact that its significant increase is possible only when replacing carburetor system power supply to injection (distributed injection).

The cost of such an alteration is commensurate with the purchase and installation of an UMZ 421 injection motor, which is subsequently subjected to tuning.

However, the UMZ 417 engine can be subjected to a simple alteration, which will allow it to slightly increase its power. This requires:

1. Balance the cylinder-piston group;
2. Increase the compression ratio in the cylinders to 9.2 by milling the cylinder head to a height of 95 mm.
3. Replace regular camshaft on the narrow-phase "OKB Engine".
4. Cut the exhaust ports to 39 mm and install the appropriate timing valves.
5. Replace the exhaust manifold with a manifold from the 421 engine.
6. Change the outlet pipe to a 51 mm pipe.

After performing the above operations, the engine power will increase to 100 hp. from.

Raise the power of the power unit by another 10 liters. from. it is possible, if additionally:

• polish the combustion chambers until a mirror-like surface is obtained;
• to lighten the heavy piston group and crankshaft with their subsequent balancing.

ENGINE UMZ 4178

The engine has a vertical in-line cylinder arrangement.

Engine type - four-stroke, carburetor.

The power supply system is with forced fuel supply.

Designed for installation on all UAZ models.

The engine has fluid system cooling, closed, with forced circulation.

The lubrication system is pressure and splash.

Crankcase ventilation is closed.

Manufactured by JSC "Volzhskie Motors"

Aluminum alloy engine block. The cylinders of engines 4178 and 4179 are made in the form of removable wet liners, cast from special cast iron. The upper part of the liner is sealed by clamping the liner collar between the block and the block head through a gasket, and the lower part - through a ring made of oil and petrol resistant rubber.

Aluminum alloy cylinder head with plug-in seats and valve guides. A gasket made of asbestos cloth impregnated with graphite is installed between the block and the head. Gasket thickness - (compressed) 1.5 mm. To avoid adhesion of the gasket to the block and the head, it is rubbed on both sides with graphite powder before putting it in place. The gasket for engines 4178 and 4179 is symmetrical, engine 4218 is asymmetrical.

Specifications:

• Number of cylinders 4
• Working volume of cylinders, l 2.445
• Cylinder diameter, mm 92
• Compression ratio 7.0: 1
• Rated power at a crankshaft speed of 4000 min-1, kW (hp) 67.6 (92)
• Maximum torque at a crankshaft speed of 2200-2500 min-1, N * m (kgf * m) 171.6 (17.5)
• The order of operation of cylinders 1-2-4-3
• Piston stroke, mm 92
• CO content at idle,% 1.5
• Fuel A-76

1 - fine fuel filter; 2 - oil filler cap; 3 - oil level indicator; 4 - rocker cover; 5 - cylinder head; 6 - sensor distributor; 7 - starter; 8 - clutch housing; 9 - lower part of the clutch housing; 10 - fuel pump; 11 - engine mount bracket

1 - drain cock of the cylinder block; 2 - cylinder block; 3 - exhaust manifold; 4 - intake pipe heating damper; 5 - inlet pipeline; 6 - carburetor; 7 - generator; 8 - oil pressure indicator sensor; 9 - sensor warning light emergency oil pressure; 10 - oil filter; 11 - plug drain hole oil pan 33 2 Cars UAZ-3741, UAZ-3909, UAZ-2206, UAZ-3303

Mounting the engine on UAZ vehicles

1 - protective cap; 2 - washer; 3-top pillow; 4 - socket; 5 - lower. pillow; 6 - spacer sleeve; 7 - washer; 8 -bolt

Tighten the nuts securing the cylinder head after running in the car and after 1000 km of run after each head removal. Tighten the nuts only on a cold engine. To ensure a uniform and tight fit of the cylinder head to the gasket, tighten the nuts in the sequence shown in the figure, in two steps: the first time - preliminary, with less effort, the second - finally. Tighten nuts evenly using a torque wrench.

The order of tightening the nuts of the cylinder head

The UMZ 417 engine was intended for installation in soviet cars high cross-country ability Ulyanovsk automobile plant, such as UAZ 469 and UAZ 452 “Loaf”.
Features. The UMZ 417 motor has replaced. The engine got a new cylinder head similar to Car cylinder head GAZ-24 (). The compression ratio increased from 6.7 to 7.0. The changes also affected the gas distribution mechanism - a different camshaft and new intake valves were installed (the head diameter was increased to 47 mm). A cylinder head with round windows for a manifold, on early engines a manifold for a single-chamber carburetor. Two-chamber carburetor on engines with an index of 4178.
Motor problems have long been known - poor quality of parts and assembly, problematic cooling system (the motor is prone to overheating), oil leaks from everywhere, even through the block.
The resource of the UMZ-417 engine is about 150 thousand km.
The engine has a number of modifications (see below).

Engine characteristics UMZ 417 UAZ 469, 452 Loaf

Design

Four-stroke four-cylinder gasoline carburetor with a contact ignition distributor, with in-line cylinders and pistons that rotate one common crankshaft, with a single lower camshaft. The engine has a closed-type forced circulation liquid cooling system. Lubrication system - pressure and spray.

The cylinder block is aluminum with cast iron liners. At UMZ-417, the liners are planted through rubber rings, in contrast to the ZMZ-402, which fit through copper gaskets. Unfortunately the rubber rings reduce the strength of the 417 motor block. The block has no stiffeners. Only on later engines did 3-4 ribs appear. The UMZ-417 unit has a mount for an oil filter from a VAZ-2101.
If we continue to talk about the similarities and differences between the UMZ-417 and ZMZ-402 engines, then we can say that the crankshaft, camshaft, connecting rods, pistons, rings, pushers and rods are the same. The liners are different due to the different fit. The flywheel of the 417th is larger in diameter and heavier, respectively, the bell is also larger in size. At ZMZ, the packing is put into the groove in the block and the crankshaft cover, and at UMP it is screwed and crimped with stamped steel plates, which ultimately has a bad effect on the tightness of the structure.
At UMP 417, coolant is taken and supplied to the cylinder head, as a result of uneven engine cooling. The ZMZ 402 pump is more reliable than the 417th, it has an oil seal, not fiber. But this only applies to the old-style pump! Now on new pumps for the 417th motor, an oil seal is used.
It is important to mention that the exhaust manifold on the UMP 417 has a 4-1 design, which crushes the engine at medium and high speeds.

Modifications

1. UMP 417.10 - designed for installation on UAZ-3151 vehicles (76 gasoline, 92 hp).
2. UMP 4175.10 - has an increased compression ratio of 8.2 for 92 gasoline. Power 98 HP Used on Gazelle cars.
3. UMP 4178.10 - a manifold for a two-chamber carburetor is used.
4. UMP 4178.10-10 - installed cylinder head from with increased exhaust valves up to 39mm. Complete with crankshaft oil seal instead of packing. The pump is fixed to the block. designed for UAZ vehicles.

Service

Oil change in the UMP 417 engine. Oil change interval - 10 thousand km. The oil volume of a dry engine with an oiled cooler is 5.8 liters. When changing, 0.5 to 1 liter of oil remains in the lubrication system and the radiator. Oil filter from VAZ 2101. The oil recommended by the manufacturer - M-8-B SAE 15W-20, M-6z / 12G SAE 20W-30, M-5z / 10g1, M-4z / 6B1 SAE 15W-30.
Adjustment of valves It is necessary to adjust the clearances every 15 thousand km.