Production 1970s–present | Also called Orion | |
 | ||
The Mitsubishi Orion or 4G1 engine is series of inline-four internal combustion engines introduced by Mitsubishi Motors in the 1970s, along with the Astron, Sirius, and Saturn. It was first introduced in the Colt and Colt-derived models in 1978. Displacement ranges from 1.2 L to 1.6 L.
Contents
4G11
The 4G11 displaces 1.2 L (1244 cc) with a bore and stroke of 69.5 mm x 82.0 mm.
Applications:
4G12
The 4G12 (also known as the G11B) displaces 1.4 L (1410 cc) with a bore and stroke of 74.0 mm x 82.0 mm. 4G12 was the first to feature Mitsubishi's MD (modulated displacement) technology, a form of variable displacement. The 4G12 was not offered by Mitsubishi with fuel injection. This engine is fairly outdated compared to its counterparts that were used in the later Lancers.
Applications:
4G12T
Turbocharged version of the 4G12, uses a TC06 turbocharger.
4G13
The SOHC 4G13 displaces 1.3 L 12 valves (1298 cc) (73 hp) with a bore and stroke of 71.0 mm x 82.0 mm. In the Gulf Countries, 90 PS gross at 6000 rpm is claimed.
Applications:
4G15
The SOHC 4G15 displaces 1.5 L (1,468 cc) with a bore and stroke of 75.5 mm x 82.0mm. A version of the 4G15 was produced with gasoline multi port injection. It has approximately 92 hp (69 kW) on the 1993 Mirage model. The DOHC 4G15 produces 110 hp with 137 Nm of torque. Another DOHC version was combined with GDI fuel injection and delivers100 hp and 137Nm of torque. There is also a DOHC 16 valve variant 110ps at 6,000rpm which is uncommon. A DOHC MIVEC turbo variant of the engine is also still in production to date (4G15T), serving in the Mitsubishi Colt series, offering 163 hp (122 kW) on the latest Colt Version-R (with exhaust enhancement). The most powerful version yet of this engine is found in the Colt CZT Ralliart (special model from Switzerland) with a total output of 197 hp. The 4g15 is known as one of the longest lived Japanese engines ever produced. There was a recorded instance of the engine exceeding 997,000 miles (1,604,515.97 km) in a 1998 Mitsubishi Mirage sedan.
Applications:
4G16
The 4G16 displaces 1.2 L (1,198 cc) from a 68.2 mm bore and 82.0 mm stroke. This engine was mainly offered in European markets, where it suited local tax regulations.
Applications:
4G17
The 4G17 displaces 1.3 L (1,343 cc). It is a SOHC 12-valve engine. Bore is 72.2 mm and stroke is 82 mm. Output of a carbureted version is 78 PS (57 kW) at 6,000 rpm and 10.9 kg·m (107 N·m) torque at 3,500 rpm.
Applications:
4G18
The SOHC 4G18 displaces 1.6 L (1,584 cc) with a bore and stroke of 76.0 mm x 87.3 mm. It is a 4-valve per cylinder engine, fuel injected. Output is 105 PS net at 6,000 rpm (Middle East specifications), 122 PS gross at 6,000 rpm (Gulf Countries specification), 98 PS net with 150 Nm (European specifications). It uses a COP (Coil-On-Plug, also known as Plug-top coil) ignition rely on one coil to fire two cylinders, one of which was by spark plug wire.
Applications:
4G19
The DOHC MIVEC 4G19 displaces 1.3 litres and features four valves per cylinder. It produces 66 kW (90 PS) at 5,600 rpm and 121 N·m of torque at 4,250 rpm. It was introduced in 2002, powering the then-new Mitsubishi Colt.
Applications: