The power unit ZMZ-24D is part of a series of legendary engines for the Volga. The power unit of Zavolzhsky Motor Plant OJSC was developed and introduced. The motor was in operation for a short time, and it was replaced by no less legendary - ZMZ-402.
Story
With the development of the new GAZ-24, it required a new engine 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 - Harry Voldemarovich Evart.
Unlike the old series, the ZMZ-24D engine received a number of improvements. The design of the cylinder block and the cooling system was changed. But a series of the power unit was no longer produced in 1972, since repairs and maintenance were too expensive.
Characteristics
During the Soviet Union, the ZMZ-24D engine was widely used, and cars with this engine can even be found in the CIS now. In addition to the Volga, the power unit was used on the UAZ-469. On the basis of the power plant, UMZ-417 and 421 were developed.
Imagine the characteristics of ZMZ-24D in the table:
Name | Description |
Manufacturer | Zavolzhsky Motor Plant OJSC |
Model | ZMZ-24D |
Fuel | Gas or gas |
Injection system | Carburetor |
Configuration | L4 |
Engine power | 95 l from. (possibility of increasing power) |
Piston mechanism | 4 pistons |
Valve gear | 8 valves |
Piston (diameter) | 92 mm |
Piston (stroke) | 92 mm |
Cooling | Liquid |
Block and head (execution material) | Aluminum |
Resource | 250,000 km |
Cylinder operation | 1-2-4-3 |
Ignition | Contact or non-contact (set by motorists themselves) |
Service
Maintenance of the ZMZ-24D is simple because the engine is structurally simple. Replacement of motor lubricant, and, accordingly, of the oil filter is carried out once per 10,000 km. 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-lubricating materials.
Since the engine has not been produced for a long time, it is recommended that after the overhaul be carried out, the engine should be switched to semi-synthetic oil. Filter change is carried out every scheduled maintenance.
Every second maintenance, it is necessary to change the fuel and air filters. It is also recommended to check spark plugs and armored wires. Valve adjustment is carried out every 30-40 thousand km.
Repairs
Repair of ZMZ-24D and other engines of the series is carried out by analogy. So, even in the worst condition, this power unit can be repaired. Dismantling can even be carried out by a novice motorist in a few hours.
Engine overhaul will require additional special equipment. First you need to test the block head and determine the presence of cracks and holes. If these are present, then it is worth trying to brew them using argon welding. If the problem persists, the cylinder head will have to be replaced.
Block boring is carried out on a special stand. Repair dimensions are 92.5 mm and 93.0 mm. In rare cases, 93.5 mm repair can be applied. If the size of the damage to the piston group is exceeded, then the unit is sleeve-mounted to a standard or repair size.
The crankshaft must be inspected for scratches, cracks or damage. Mandatory grinding of the cams for 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 breakage under load, which will entail the replacement of the engine.
Tuning
Since the car has a minimum of electrics, usually only the mechanical part is tuned. First of all, professionals spend boring the cylinder block. The piston group manufactured by ATF is ideal for installation. She has a light weight.
The second stage is the groove of the crankshaft for sports liners and connecting rods. All together greatly facilitate the weight of the power unit. Next is the finalization stage of the injection. Instead of a standard carburetor, you can install it from a VAZ-2107 or replace the head for a mono-injector.
The next stage of tuning is to replace the ignition system. Initially, the ZMZ-24D has a contact, but motorists replace it either with a contactless one or install a keyless trigger at all. Also, do not forget that it is necessary to change the ignition coil, spark plug and armored wire.
The last step is to install a sports cooling system. In this case, some pipes will have to be selected individually, since it will not be possible to find the Kit-kit on the ZMZ-24D, they simply will not produce it. It is also recommended to install an electric fan for better cooling of the advanced motor, which will heat up more.
Output
Motor ZMZ-24D 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.