The Mitsubishi 6G7 or Cyclone V6 engine is a series of V6 piston engines from Mitsubishi Motors

Mitsubishi Motors

is a multinational automaker headquartered in Minato, Tokyo. In 2009 it was the fifth-largest Japan-based automaker and the 17th-largest in the world measured by production...

. Five displacement variants have been produced with both single- and double- overhead camshaft layouts. MIVEC

MIVEC

MIVEC is the brand name of a variable valve timing engine technology developed by Mitsubishi Motors...

variable valve timing

Variable valve timing

In internal combustion engines, variable valve timing , also known as Variable valve actuation , is a generalized term used to describe any mechanism or method that can alter the shape or timing of a valve lift event within an internal combustion engine...

 has also been implemented in some versions, and the 2.5 and 3.0 L versions were also available with gasoline direct injection

Gasoline direct injection

In internal combustion engines, gasoline direct injection , also known as petrol direct injection or direct petrol injection, is a variant of fuel injection employed in modern two-stroke and four-stroke gasoline engines...

. Modern versions feature a one-piece cast crankshaft

Crankshaft

The crankshaft, sometimes casually abbreviated to crank, is the part of an engine which translates reciprocating linear piston motion into rotation...

 and cast aluminum intake manifold.
The 6G71 is a 1,998 cc version with a bore and stroke of 74.7 by 76 mm (2.9 by 3 in).