Engine of the 417th model: features, specifications

2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:41

UMZ 417 is an engine that was specially designed for SUVs produced by the Ulyanovsk Automobile Plant: UAZ-469 and UAZ-452. This unit replaced the motor of the 414th model.

General information about the engine

The UMZ-417 engine (photo below) has a classic vertical, in-line arrangement of a group of cylinders. By its type, the engine belongs to four-stroke installations with a carburetor forced fuel supply system. Engine cooling is also organized traditionally for internal combustion engines and is a closed circuit filled with liquid, the circulation of which is provided by a special pump. Engine oil is supplied to the units of the unit under pressure, with further spraying.

UMP-417 engine: specifications

• Number of cylinders (pcs.) – 4.
• Volume (see cube) – 2445.
• The diameter of one cylinder is 92.0 mm.
• Piston stroke - 92.0 mm.
• Compression value is 7, 0.
• Total number of valves (pcs.) - 8 (a pair for each cylinder).
• Timing type - OHV.
• Motor power(subject to a crankshaft rotation speed of 4 thousand rpm) - 92 liters. s.
• Torque value - 172Nm @ 2200rpm
• Recommended type of gasoline - A 76.
• Fuel consumption (l. / 100 km): city mode - 14.5, suburban highway - 8.4, mixed mode - 10.6.
• Refilling volume of oil - 5, 8 l. (first bay, subsequent - 5 l.)
• The rate of oil consumption for waste is 100 g per 1 thousand km.
• Motor weight (kg.) – 166.
• Working resource - 150 thousand km.

Engine features compared to predecessors

First of all, it should be noted that the engine of the 417th model, which UAZ began producing in 1989, is practically an analogue of the power unit from the Volga region - ZMZ-402, the production of which began back in 1981. It is installed on cars of the Volga and Gazelle series. And the differences between one and the other are not too significant.

Therefore, to say that the UMZ-417 received a completely new cylinder head, in comparison with the UMZ-414, can only be a stretch, since it is similar to the head of the ZMZ-402, but in comparison with the "old" UAZ engine compression ratio increased from 6.7 to 7.

Real changes have affected the gas distribution mechanism. First of all, a new camshaft and exhaust valves were installed (the diameter of the cap increased from 44 mm to 47 mm), while the inlet ones remained the same (36 mm). In addition, the shape of the exhaust manifold was also changed, which was now a 4-1 scheme, that is, four pipes from the cylinders converged into one.

The block itself is cast from aluminum, the sleeves are madefrom cast iron. In the engine of the 417th model, they are planted through gaskets made of oil-resistant rubber - this is one of the weak points of this motor, since the overall strength of the block is reduced. By the way, the ZMZ-402 has copper gaskets on the sleeves. In addition, UMZ-417 early releases were not provided with stiffeners, they appeared later.

Another difference between UMP and ZMZ is that there is a special mount on the body for the VAZ oil filter (VAZ-2101).

The crankshaft and camshaft, pistons with rings, valve lifters and rods for the engine of the 417th model are the same as for the ZMZ-402. Their cylinder liners are different, since the fit due to the gaskets is different. The flywheel of the UMP engine is larger in diameter and heavier in weight, the bell, respectively, also has increased dimensions.

Another weak point of the engine is the packing: if in ZMZ it is laid in special grooves in the cylinder block and crankshaft cover, then at UMP it is screwed onto the axle and crimped from above with steel plates, which reduces the tightness of the joint.

UMP-417 engine: owner reviews

If we analyze the reviews of the owners of UAZs, on which the 417th engine is installed, then in general they note the unique reliability of the unit. The motor can keep working even after severe overheating. Its real working life significantly exceeds that declared by the plant, while the engine is unpretentious and can work quite normally both on bad gasoline and low-quality oil.

But there are also disadvantages:

• If the ZMZ engine has a water pump that pumps antifreeze into the cylinder block and takes it from the cylinder head, then the UMP is supplied and taken from the head, as a result, the engine cools unevenly and often overheats.
• Since the exhaust manifold is made according to the 4-1 scheme, then at medium and high speeds the engine, as they say, “does not pull”.
• For the declared power, too much gas consumption.
• Oil leaking through leaky connections, and even through the block itself (poor body casting, resulting in large pores, leads to the formation of microchannels through which oil can enter both outside and into the coolant).
• Lack of quality spare parts.
• The need to adjust the thermal clearances in the valves.

Engine modifications

UMZ-417.10 - installed on the UAZ-3151. Power - 92 liters. With. The motor is designed for gasoline grade A 76.

UMZ-4175.10 - has increased compression - 8, 2. Power - 98 hp. With. Gasoline - AI 92. Installed on cars from the Gazelle series.

UMZ-4178.10 - as an improvement, I received a new intake manifold, for a two-chamber carburetor.

UMZ-4178.10.10. - designed for the UAZ line. For modernization, a block head from UMZ-421 was used in it, and the asbestos crankshaft packing was replaced with an oil seal.

Engine Service

It is known that timely maintenance of the engine can significantly increase its working life. Therefore, the oil in the engine, in order to extend its life, should be changed every 10 thousand km. 5.8 liters enter the crankcase and oil cooler, the non-draining residue during the subsequent change is 0.5-1 liter. Along with the oil, the filter also changes (suitable for VAZ-2101).

The valve clearances should be adjusted after every 15,000 km.