Mitsubishi 8A8 engine

The Mitsubishi 8A8 engine is a range of V8 powerplants produced by Mitsubishi Motors since 1999. The only variant to date is the 8A80, a 4.5 L (4,498 cc) with double overhead camshafts and gasoline direct injection (GDI) technology. Financial pressures forced the company to discontinue sales of the Proudia and Dignity, the only vehicles in its range to which it was fitted, after only fifteen months.[2]

Mitsubishi Motors SVG logo 2.svg 8A8 engine
ManufacturerMitsubishi Motors
ConfigurationNaturally aspirated 90° V8
Displacement4.5 L (4,498 cc)
Cylinder bore86 mm (3.39 in)[1]
Piston stroke96.8 mm (3.81 in)[1]
Block materialAluminium[1]
Head materialAluminium alloy
Compression ratio10.7:1
Fuel systemDirect injection
Fuel typeGasoline
Cooling systemWater-cooled
Power output280 PS (206 kW; 276 hp)
Specific power62.2 PS (45.7 kW; 61.3 hp) per litre
Torque output412 N⋅m (304 lb⋅ft)

However, the two vehicles were developed in partnership with the Hyundai Motor Company of South Korea, with whom Mitsubishi has had a longstanding relationship.[3] While Mitsubishi makes the cylinder heads and other GDI-related equipment, Hyundai casts the aluminium block, and other major internal components.[4] Hyundai's version of the Proudia/Dignity, the Equus, proved more successful, and this has been the sole application of the powerplant since 2001. Hyundai replaced the engine with its newly developed Tau V8 in 2008 when the second generation rear wheel drive Equus replaced the first model.[5]

8A80 (1999–2008)Edit

  • Bore pitch — 95 mm (3.74 in)[4]
  • Stroke -- 96.8 mm (3.81 in)
  • Power — 280 PS (206 kW; 276 hp) at 5000 rpm
  • Torque — 412 N⋅m (304 lb⋅ft) at 4000 rpm


See alsoEdit


  1. ^ a b c
  2. ^ "Streamlining of production capacity and model portfolio", Mitsubishi Motors press release, March 28, 2001
  3. ^ "Mitsubishi Motors Supplies Hyundai Motor Co. with GDI Technology for New V8 GDI Engine" Archived 2009-01-12 at the Wayback Machine, Mitsubishi Motors press release, April 28, 1999
  4. ^ a b "Mitsubishi's new flagships", Jack Yamaguchi, Automotive Engineering International Online, March 2000
  5. ^ "Inside Line: Future Vehicles Preview" Archived 2006-07-15 at the Wayback Machine,