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|Mazda G engine|
|Production||From 1989 to 2001|
|Displacement||2.6 L (2,606 cc)|
|Cylinder bore||92 mm (3.62 in)|
|Piston stroke||98 mm (3.86 in)|
|Valvetrain||SOHC 3 valves x cyl.|
|Power output||102 hp (76 kW; 103 PS)|
|Specific power||39.1 hp (29.2 kW; 39.6 PS)|
The G family of Mazda engines is a family of large inline-four piston engines that was commercialized from 1989 to 2001. The series started at 2.6 L for the Mazda B-Series truck from 1988. Prior to that, a 2.6 L Mitsubishi engine had been used.
Mazda replaced the G54B with its own 2.6 L G6 engine which displaces 2.6 L (2,606 cc). Bore and stroke are 92 mm × 98 mm (3.62 in × 3.86 in). The G6 was produced until 2006.
Compression Ratio: 8.4
Valve train: 12V SOHC
The 2.5 L G5 was an evolution of the G6. It produces 102 hp (76 kW; 103 PS) at 4000 rpm.
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 2.5 L (2,494 cc) 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 was in turn based on the original Mazda KL 2.5 L (2,495 cc) 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, leaving Mazda the only option of employing later Ford V6s, which were considerably cheaper to manufacture.
- 1999-2001 Mazda MPV (second generation)
- Mastrostefano, Raffaele, ed. (1990). Quattroruote: Tutte le Auto del Mondo 1990 (in Italian). Milano: Editoriale Domus S.p.A. p. 492.