The G family of
Mazda engines is a family of large
inline-four piston engine
A reciprocating engine, more often known as a piston engine, is a heat engine that uses one or more Reciprocating motion, reciprocating pistons to convert high temperature and high pressure into a Circular motion, rotating motion. This article ...
s that was commercialized from 1989 to 2014. The series started at 2.6 L for the
Mazda B-Series
The Mazda B series is a series of pickup trucks that was manufactured by Mazda. Produced across five generations from 1961 to 2006, the model line began life primarily as a commercial vehicle, slotted above a kei truck in size. Through its p ...
truck from 1988. Prior to that, a 2.6 L
Mitsubishi
The is a group of autonomous Japanese multinational companies in a variety of industries.
Founded by Yatarō Iwasaki in 1870, the Mitsubishi Group traces its origins to the Mitsubishi zaibatsu, a unified company that existed from 1870 to 194 ...
engine had been used.
G54B
The 2.6 L Mazda G54B was actually a
Mitsubishi engine. It displaces and was used in the
B2600 pickup from 1986 to 1988, until Mazda developed their own suitable engine.
G6
Mazda replaced the G54B with its own 2.6 L G6 engine which displaces . Bore and stroke are .
The G6 was produced until 1993 and made 121 hp (90 kW), 149 lb⋅ft (202 N⋅m) for North American models. The G6E which replaced it was used in other markets around the world.
Compression Ratio: 8.4
Valve train: 12V SOHC
Applications:
* 1989–1993
Mazda B2600i
* 1998–2006
Mazda B2600
* 1989–1996
Mazda MPV
* 2007-2014
Mazda BT-50
G5
The 2.5 L G5 was an evolution of the G6. It produces at 4000 rpm.
Applications:
* 1995
Mazda B2500
* 1996-1999
Mazda MPV
GY
The GY is not at all related to the Mazda G-series four-cylinder engines and is listed in this article strictly by engine code association. GY is the Mazda engine code for a
Ford Duratec V6 engine which, due to an OEM deal with Ford, was built by Mazda in Japan for limited use in the 1999-2001 Mazda MPV. This Duratec
V6 engine
A V6 engine is a six- cylinder piston engine where the cylinders and cylinder blocks share a common crankshaft and are arranged in a V configuration.
The first V6 engines were designed and produced independently by Marmon Motor Car Company, ...
was in turn based on the original
Mazda KL from 1991. By the late 1990s (during the Mazda/Ford partnership) Ford executives had ordered Mazda to cease development of V6 engines and instead focus on a new range of four-cylinder engines for both companies' benefit, which would become the MZR/Duratec lineup of inline-four engines. The order to discontinue their own V6 development included the
Mazda K engine
The Mazda K-series automobile engine is a short stroke 60° 24-valve V6 with belt-driven DOHC and all-aluminium construction. Displacements range from 1.8 L to 2.5 L. They all use a 27-degree DOHC valvetrain with directly actuated hydr ...
, leaving Mazda the only option of employing later Ford V6s, which were considerably cheaper to manufacture.
Applications:
* 1999-2001
Mazda MPV (second generation)
See also
*
Mazda engines
References
{{DEFAULTSORT:Mazda G Engine
G
Straight-four engines