ZMZ-24

ZMZ-24 Engine
ZMZ-24 Engine
	Gaz-24 Volga engine in a [[1]]
Overview
Manufacturer	Global Engine Manufacturing Alliance; Chrysler;
Also called	Tigershark; World Gas engine; WGE;
Production	1968-1987
Layout
Configuration	Straight-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 material	Aluminum
Cylinder head material	Aluminum
Valvetrain	Double overhead camshafts with VVT; MultiAir 2;
Compression ratio	10.0:1, 10.2:1, 10.5:1
Combustion
Turbocharger	no turbocharger
Fuel system	Sequential MPFI
Fuel type	Gasoline
Oil system	Wet sump
Cooling system	Water-cooled
Output
Power output	70–95 hp (52–71 kW)
Torque output	186 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

^ Thompson, Andy. Cars of the Soviet Union (Haynes Publishing, Somerset, UK, 2008), p.62.
^ ^a ^b Thompson, p.130.
^ ^a ^b Thompson, p.129.
^ Thompson, p.128.
^ Thompson, pp.129-130.

Sources

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

[1] Thompson, Andy. Cars of the Soviet Union (Haynes Publishing, Somerset, UK, 2008), p.62.

[Thompson,_p.130-2] Thompson, p.130.

[Thompson,_p.129-3] Thompson, p.129.

[4] Thompson, p.128.

[5] Thompson, pp.129-130.

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