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ZMZ-24

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Reciprocating internal combustion engine
ZMZ-24 Engine
Gaz-24 Volga engine in a
Overview
Manufacturer
Also called
  • Tigershark
  • World Gas engine
  • WGE
Production1968-1987
Layout
ConfigurationStraight-4
Displacement
  • 2.5 L; 152.6 cu in (2,500 cc)
Cylinder bore
  • 86 mm (3.39 in)
  • 88 mm (3.46 in)
Piston stroke
  • 77 mm (3.03 in)
  • 82 mm (3.23 in)
  • 86 mm (3.39 in)
  • 97 mm (3.82 in)
Cylinder block materialAluminum
Cylinder head materialAluminum
Valvetrain
Compression ratio10.0:1, 10.2:1, 10.5:1
Combustion
Turbochargerno turbocharger
Fuel systemSequential MPFI
Fuel typeGasoline
Oil systemWet sump
Cooling systemWater-cooled
Output
Power output70–95 hp (52–71 kW)
Torque output186 lb⋅ft (252 N⋅m)

The ZMZ-24 was an aluminium-block overhead valve (OHV) inline four design, an evolution of the ZMZ-21A, displacing 2,445 cc (149.2 cu in), and in its initial appearance, produced with chain-driven camshaft and compression ratio of 6.6:1; it produced 70 hp (52 kW; 71 PS) at 4,000 rpm and 123 lb⋅ft (167 N⋅m) at 2,200 rpm. It was also produced as the UMZ 4178.10.

It "quickly became the mainstay of the Soviet engine industry", and would be used in a variety of vehicles.

The improved ZMZ-24D, found in the GAZ-24, ran on 92 RON gasoline (while the ZMZ-24-01 could use commonly available 76 octane, and the ZMZ-24-07 could use liquid propane). The cylinder block was die cast, instead of the slower coquille for the 21A. The engine featured a twin-choke carburettor, with a higher compression ratio, producing 95 hp (71 kW; 96 PS) at 4500 rpm and an even more impressive 186 N⋅m (137 ft⋅lbf) of torque at 2200–2400 RPM.

By 1970, the ZMZ-24 had been renamed the ZMZ-402.10, with a lower-compression 4021.10 version, which remained in limited production until 2006. In this format, it was used in the RAF minibus and ErAZ van.

It also served as the basis for the sixteen-valve 131 hp (98 kW; 133 PS) 2,287 cc (139.6 cu in) ZMZ-4062.10 (seen in some Volgas after 1996), the 145 hp (108 kW; 147 PS) 2,463 cc (150.3 cu in) ZMZ-40552.10 (used in GAZ's commercial vehicles), the 2,690 cc (164 cu in) ZMZ-409.10 of the UAZ Patriot, and the ZMZ-5143 diesel all derive from the ZMZ-24.

Notes

  1. Thompson, Andy. Cars of the Soviet Union (Haynes Publishing, Somerset, UK, 2008), p.62.
  2. ^ Thompson, p.130.
  3. ^ Thompson, p.129.
  4. Thompson, p.128.
  5. Thompson, pp.129-130.

Sources

  • Thompson, Andy. Cars of the Soviet Union. Somerset, UK: Haynes Publishing, 2008.
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