ZMZ-24D engine: characteristics, description, repair

2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42

The ZMZ-24D power unit is part of a series of legendary engines for the Volga. The power unit of OAO Zavolzhsky Motor Plant was developed and implemented. The motor was not in operation for long, and it was replaced by no less legendary - ZMZ-402.

History

With the development of the new GAZ-24 car, a new engine was required for it, since the GAZ-21 power unit did not meet the requirements. The development was entrusted to the designer of the Gorky Automobile Plant - Garry Voldemarovich Evart.

Unlike the old series, the ZMZ-24D engine received a number of improvements. The design of the cylinder block, cooling system was changed. But the powertrain series was discontinued in 1972 because repairs and maintenance were too expensive.

Features

During the period of the Soviet Union, the ZMZ-24D engine was widely used, and cars with this engine can even now be found in the CIS. In addition to the Volga, the power unit was used on the UAZ-469. Based on the power plant, UMZ-417 and 421 were developed.

Let's imagine the characteristicsZMZ-24D in the table:

Name	Description
Manufacturer	JSC Zavolzhsky Motor Plant
Model	ZMZ-24D
Fuel	Petrol or gas
Injection system	Carburetor
Configuration	L4
Engine power	95 l. With. (possibility of increasing power)
Piston mechanism	4 pistons
Valve mechanism	8 valves
Piston (diameter)	92mm
Piston (stroke)	92mm
Cooling	Liquid
Block and head (material)	Aluminum
Resource	250,000 km
Cylinder order	1-2-4-3
Ignition	Contact or contactless (installed by motorists themselves)

Maintenance

Maintenance of the ZMZ-24D is simple, since the engine is structurally simple. Replacing engine lubricant, andrespectively, and the oil filter is carried out once per 10,000 km of run. In order to increase the resource of the power plant, it is recommended to reduce the period to 8000 km and use only high-quality gas lubricants.

Since the engine has been out of production for a long time, it is recommended to transfer the engine to semi-synthetic oil after the overhaul. The filter is changed every scheduled maintenance.

The fuel and air filters need to be changed every second service. It is also recommended to check spark plugs and armored wires. Valve adjustment is carried out every 30-40 thousand km.

Repair

Repair of ZMZ-24D and other motors of the series is carried out by analogy. So, even in the worst condition, this power unit can be repaired. Even a novice car enthusiast can disassemble in a few hours.

Overhaul of the engine will require additional special equipment. First you need to pressurize the head of the block and determine the presence of cracks and holes. If such are present, then it is worth trying to brew them using argon welding. If it was not possible to eliminate the malfunction, then the cylinder head will have to be replaced.

The boring of the block is carried out on a special stand. Repair dimensions are 92.5 mm and 93.0 mm. In rare cases, a 93.5 mm repair can be applied. If the extent of damage to the piston group is exceeded, then the block is lined for a standard or repairsize.

The crankshaft should be inspected for scratches, cracks or damage. It is mandatory to grind the cams under the liners. Repair sizes 0.25, 0.50 and 0.75 mm. In some cases, a repair size of 1.00 is used. In this case, there is a possibility of a crankshaft breaking under load, which will entail replacing the engine.

Tuning

Since the car has a minimum of electrics, usually only the mechanical part is subjected to tuning. First of all, professionals bore the cylinder block. An ATF piston group is ideal for installation. She is light weight.

The second stage is the turning of the crankshaft for sports liners and connecting rods. All together will significantly lighten the weight of the power unit. The next step is to refine the injection. Instead of a standard carburetor, you can install from the VAZ-2107 or replace the head with a mono-injector.

The next stage of tuning is the replacement of the ignition system. Initially, the ZMZ-24D has a contact one, but motorists replace it either with a contactless one, or even install a keyless trigger mechanism. Also, do not forget that it is necessary to change the ignition coil, candles and armored wires.

The last step is to install a sports cooling system. In this case, some nozzles will have to be selected individually, since it will not be possible to find a Kit kit on the ZMZ-24D, it is simply not produced. It is also recommended to install an electric fan for better cooling of the advancedmotor, which will warm up more.

Conclusion

The ZMZ-24D motor is a classic of the Soviet automotive industry. The engine turned out to be powerful and reliable, but frequent and expensive repairs forced the designers to modify the power unit, which later received a different marking.