Lamborghini V8

Lamborghini V8

Overview
Manufacturer	Lamborghini
Production	1971-1988
Combustion chamber
Configuration	90° V8 petrol engine
Displacement	2.0: 1,995 cc (121.7 cu in), 2.5: 2,463 cc (150.3 cu in), 3.0: 2,997 cc (182.9 cu in), 3.5: 3,485 cc (212.7 cu in)
Cylinder bore	2.0: 77.4 mm (3.05 in) 2.5/3.0/3.5: 86.0 mm (3.39 in)
Piston stroke	2.0/2.5: 53.0 mm (2.09 in) 3.0: 64.5 mm (2.54 in) 3.5: 75.0 mm (2.95 in)
Cylinder block alloy	Cast aluminium alloy
Cylinder head alloy	Cast aluminium alloy
Valvetrain	2 valves per cylinder, 2.0/2.5/3.0: single overhead camshaft, 3.5: double overhead camshaft
Combustion
Fuel type	Petrol/Gasoline
Oil system	Wet sump
Cooling system	Water cooled
Output
Power output	2.0: 136 kW (185 PS; 182 bhp) @ 7,800 rpm 2.5: 164 kW (223 PS; 220 bhp) @ 7,500 rpm, then 190 kW (258 PS; 255 bhp) 3.0: 186 kW (253 PS; 249 bhp) @ 7,500 rpm, or 194 kW (264 PS; 260 bhp) @ 7,500 rpm, or 198 kW (269 PS; 266 bhp) @ 7,800 rpm 3.5: 190 kW (258 PS; 255 bhp) @ 7,000 rpm
Specific power	2.0: 68.2 kW (92.7 PS; 91.5 bhp) per litre 3.5: 54.5 kW (74.1 PS; 73.1 bhp) per litre
Torque output	3.0: 273 N·m (201 lbf·ft) @ 5,750 rpm

The Lamborghini V8 is a ninety degree (90°) V8 petrol engine designed by Lamborghini in the 1970s for their less-expensive vehicles.^[1] It was only the second internal combustion engine ever developed by the company, and first saw production for the 1971 Lamborghini Urraco.^[2] It was designed by Gian Paolo Dallara. The all-aluminium alloy engine was introduced as a 2.5 litre variant, displacing 2,463 cubic centimetres (150.3 cu in), but was expanded, by increasing the piston stroke to a 3.0 litre variant for 1975 - now displacing 2,997 cubic centimetres (182.9 cu in).

A 2.0 litre reduced stroke version was also introduced in 1975 for sale in Italy, displacing 1,994 cubic centimetres (121.7 cu in), because of Italian legislation which imposed punitive taxes on cars whose engines displaced more than 2.0 litres.

This V8 engine was also used in two other models, the Lamborghini Silhouette in 1976-1977 in which it kept the 3.0 litre displacement,^[2] and the slightly updated replacement in 1982, the Lamborghini Jalpa, which saw the engine increased in size to 3.5 litres, displacing 3,485 cubic centimetres (212.7 cu in),^[2] for ease in meeting ever-tighter emissions requirements.

Specifications

engine configuration: 90° V8 engine; wet sump lubrication system
engine displacement etc.: 2.0: 1,995 cubic centimetres (121.7 cu in); bore x stroke: 77.4 by 53.0 millimetres (3.05 in × 2.09 in) (stroke ratio: 1.46:1 - oversquare/short-stroke), 249.4 cc per cylinder; 2.5: 2,463 cubic centimetres (150.3 cu in); bore x stroke: 86.0 by 53.0 millimetres (3.39 in × 2.09 in) (stroke ratio: 1.62:1 - oversquare/short-stroke), 307.9 cc per cylinder; 3.0: 2,997 cubic centimetres (182.9 cu in); bore x stroke: 86.0 by 64.5 millimetres (3.39 in × 2.54 in) (stroke ratio: 1.58:1 - oversquare/short-stroke), 374.7 cc per cylinder; 3.5: 3,485 cubic centimetres (212.7 cu in); bore x stroke: 86.0 by 75.0 millimetres (3.39 in × 2.95 in) (stroke ratio: 1.15:1 - oversquare/short-stroke), 435.7 cc per cylinder
cylinder block and crankcase: cast aluminium alloy
cylinder heads and valvetrain: 2.0/2.5: cast aluminium alloy, two valves per cylinder, 16 valves total, chain driven single overhead camshafts; 3.0/3.5: cast aluminium alloy, two valves per cylinder, 16 valves total, chain driven double overhead camshafts
aspiration: Naturally aspirated
fuel system: 2.0: 4 twin-barrel down-draught Weber 40 IDF 1 carburettors; 2.5: 4 twin-barrel down-draught Weber 40 IDF 1 or Solex C40P117 carburettors; 3.0: 4 twin-barrel down-draught Weber 40 DCNF carburetors; 3.5: 4 twin-barrel down-draught Weber 42 DCNF carburetors
ignition system and engine management: ????
exhaust system: ????
2.0 rated motive power & torque outputs and applications: 136 kilowatts (185 PS; 182 bhp) @ 7,800 rpm; — Lamborghini Urraco
2.5 rated motive power & torque outputs and applications: 164 kilowatts (223 PS; 220 bhp) @ 7,500 rpm; — Lamborghini Urraco; 190 kilowatts (258 PS; 255 bhp) —
3.0 rated motive power & torque outputs and applications: 273 newton metres (201 lbf·ft) @ 5,750 rpm; 186 kilowatts (253 PS; 249 bhp) @ 7,500 rpm; — Lamborghini Urraco; 194 kilowatts (264 PS; 260 bhp) @ 7,500 rpm; — Lamborghini Silhouette; 198 kilowatts (269 PS; 266 bhp) @ 7,800 rpm; — Lamborghini Urraco
3.5 rated motive power & torque outputs and applications: 190 kilowatts (258 PS; 255 bhp) @ 7,000 rpm; — Lamborghini Jalpa

References

Wikimedia Commons has media related to Lamborghini engines.

↑ Lamborghini Urraco & the V8s Urraco, Bravo, Silhouette, Athon, Jalpa. Jean-Francois Marchet, Osprey autohistory, 1983
1 2 3 "Lamborghini Urraco, Silhouette & Jalpa". CarsFromItaly.net. Retrieved 9 January 2010.

External links

Lamborghini.com official website

Automobili Lamborghini S.p.A.—a wholly owned subsidiary of Audi AG

Current production vehicles	Aventador Centenario Huracán

Future production vehicles	Urus

Production engines	V8 V10 V12

Past production vehicles	350 GT 400 GT Countach Diablo Espada Gallardo Islero Jalpa Jarama LM002 Miura Murciélago Reventón Sesto Elemento Silhouette Urraco Veneno

Concept vehicles	Bertone Genesis 350 GTV 400 GT Monza Alar Athon Bravo Calà Cheetah Concept S Estoque Egoista Faena Flying Star II LM001 LMA002 LM003 LM004 Marco Polo Marzal Miura concept Portofino Urus Zagato Raptor

Motorsport	Lamborghini Super Trofeo

People	Ferruccio Lamborghini (Founder) Gian Paolo Dallara (Technical director 1963–1968) Giotto Bizzarrini (Engine designer 1960s) Bob Wallace (Test driver 1963–1975) Valentino Balboni (Test driver 1968–2008)

Other	History of Lamborghini List of Lamborghini automobiles Lamborghini (video game) Automobili Lamborghini (video game) Lamborghini American Challenge (video game) Museo Lamborghini Italdesign Giugiaro Forged composite

Lamborghini road car timeline, 1963–1989 next »
		1960s							1970s										1980s
		3	4	5	6	7	8	9	0	1	2	3	4	5	6	7	8	9	0	1	2	3	4	5	6	7	8	9
Owner		Ferruccio Lamborghini										Georges-Henri Rossetti (51%) / René Leimer (49%)					Receivership						Jean Claude Mimran / Patrick Mimran				Chrysler
Front/RWD	V12		350 GT
					400 GT		Islero		Jarama
							Espada
Mid/RWD	V8														Silhouette					Jalpa
	V8											Urraco
	V12				Miura								Countach
Front/4WD	V12																								LM002

« previous Lamborghini road car timeline, 1990 to date
		1990s										2000s										2010s
		0	1	2	3	4	5	6	7	8	9	0	1	2	3	4	5	6	7	8	9	0	1	2	3	4	5
Owner		Chrysler Corp.				Megatech		V'Power			Audi AG
Mid-engine	V10														Gallardo											Huracán
	V10																						SE
	V12	Diablo											Murciélago										Aventador
	V12																			Reventón					Veneno
Front/4WD	V12	LM002

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