ZMZ-24

ZMZ-24 Engine
Gaz-24 Volga engine in a GAZ-24
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 system2bbl Carburetor
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.[1] It was also produced as the UMZ 4178.10.[2]

It "quickly became the mainstay of the Soviet engine industry",[3] 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).[4] 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.[3] In this format, it was used in the RAF minibus and ErAZ van.[5]

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.[2]

Notes

  1. ^ Thompson, Andy. Cars of the Soviet Union (Haynes Publishing, Somerset, UK, 2008), p.62.
  2. ^ a b Thompson, p.130.
  3. ^ a b 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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