Mitsubishi Saturn engine

Mitsubishi Saturn engine
Overview
ManufacturerMitsubishi Motors
Also called4G3
Production1969–1999
Layout
ConfigurationStraight-4 & Straight-6
Displacement1.2–2.0 L (1,239–1,994 cc)
Cylinder bore73 mm (2.87 in)
74.5 mm (2.93 in)
77 mm (3.03 in)
79 mm (3.11 in)
80.6 mm (3.17 in)
Piston stroke74 mm (2.91 in)
77 mm (3.03 in)
86 mm (3.39 in)
Cylinder block materialCast iron
Cylinder head materialAluminium
ValvetrainSOHC & DOHC, 2 valves x cyl.
Compression ratio9.5:1
Combustion
TurbochargerOn G32B & 4G32T
Fuel systemMikuni-built Solex carburetor
Central-point EFI
Fuel typeGasoline
Cooling systemWater-cooled
Output
Power output37–115 hp (28–86 kW)

The Mitsubishi Saturn or 4G3 engine is series of overhead camshaft (OHC) straight-four internal combustion engines introduced by Mitsubishi Motors and saw first service in the 1969 Colt Galant. Displacement ranges from 1.2 to 1.8 L (1,239 to 1,755 cc), although there was also a rare 2-litre (1,994 cc) inline-six version built from 1970 until 1976. The early versions have chain driven valvetrain while the later versions are belt driven and equipped with balance shafts.