Mitsubishi 4G18 engine


  1. Specifications
  2. Overview, problems
  3. Performance tuning

Specs

Manufacturer Mizushima plant
Also called Orion
4G1
Production 1998-2012
Cylinder block alloy Cast-iron
Configuration Inline-4
Valvetrain SOHC
4 valves per cylinder
Piston stroke, mm (inch) 87.3 (3.44)
Cylinder bore, mm (inch) 76 (2.99)
Compression ratio 9.5
10.0
10.5
Displacement 1584 cc (96.7 cu in)
Power output 72 kW (98 HP) at 6,000 rpm
73.5 kW (100 HP) at 6,000 rpm
73.5 kW (102 HP) at 6,000 rpm
79 kW (107 HP) at 6,000 rpm
82 kW (112 HP) at 6,000 rpm
90 kW (122 HP) at 6,000 rpm
Torque output 150 Nm (111 lb·ft) at 4,000 rpm
133 Nm (98 lb·ft) at 4,500 rpm
140 Nm (103 lb·ft) at 2,750 rpm
138 Nm (102 lb·ft) at 3,000 rpm
149 Nm (110 lb·ft) at 4,500 rpm
156 Nm (115 lb·ft) at 4,500 rpm
Redline 6,500
HP per liter 62
63
64
68
71
77
Fuel type Gasoline
Weight, kg (lbs) 115 (254)
Fuel consumption, L/100 km (mpg)
-City

-Highway
-Combined
Mitsubishi
8.5 (27.7)
5.5 (42.8)

6.6 (35.6)
Turbocharger  Naturally aspirated
Oil consumption , L/1000 km
(qt. per miles)
up to 1.0
(1 qt. per 600 miles)
Recommended engine oil 5W-20
5W-30
10W-40
Engine oil capacity, L (qt.) 3.3 (3.5)
Oil change interval, km (miles) 5,000-10,000
(3,000-6,000)
Normal engine operating temperature, °C (F)
Engine lifespan, km (miles)
-Official information
-Real


200,000 – 250,000 (120,000 – 150,000)
Tuning, HP
-Max HP
-No life span loss

150+

The engine is installed in Mitsubishi Colt
Mitsubishi Lancer
Mitsubishi Kuda
Mitsubishi Space Star
Proton Waja
Brilliance BS2
Brilliance BS4
BYD F3
Emgrand EC7
Foton Midi
Hafei Saibao
Hafei Saima
Haima Haifuxing
Landwind X6
MPM Motors PS160
Soueast Lioncel
Tagaz Aquila
Zotye Nomad
Zotye T600
Zotye T700

Mitsubishi 4G18 engine reliability, problems and repair

In this article, we will talk about the largest Mitsubishi Orion engine with the displacement of 1.6 liters, designated as 4G18. It has a cast-iron cylinder block with a bore of 76 mm and a stroke of 87.3 mm. This allows increasing capacity to 1.584 liters.

This cylinder block is covered with a SOHC 16-valve head with hydraulic tappets in almost all modifications, so there’s no need for valve adjustment. It also has a timing belt with a service life of 60000 miles (90,000 km). If it breaks off, the valves will be destroyed. Replace it on time.
This engine is as simple as any other Mitsubishi Orion — it doesn’t have a MIVEC system and other modern accessories.
The firing order is 1-3-4-2.

In 2010, the MMC Company started producing the next generation of this engine, which was named Mitsubishi 4A92.

Mitsubishi 4G18 engine problems and malfunctions

The main problems of the 4G18 engines are the same as those of the 1.5 liter 4G15 (won’t start, vibration, etc.). You can learn more about them HERE.
However, the 4G18 also has its problem — high oil consumption. This happens because piston rings wear fast. They last for about 60,000 miles (90,000 km). The cooling system is not perfect, either, which leads to failure of valve stem seals or the formation of cylinder wall scratches.
High oil consumption is a classic problem of all 4G18’s.

Engine number location

The number is located on the exhaust side under the manifold.

Mitsubishi 4G18 engine tuning

Turbo

This engine is almost the same as the 4G15, so you can take advantage of the advice for boosting power from THIS ARTICLE. The result will be the same. However, instead of a performance upgrade, it would be better to buy a turbocharged 4G15 MIVEC and get a ready powerful engine.


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