Mitsubishi 4G13 engine


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

Specs

Manufacturer Mizushima plant
Also called Orion
4G1
Production 1983-2007
Cylinder block alloy Cast-iron
Configuration Inline-4
Valvetrain SOHC
3 valves per cylinder
4 valves per cylinder
Piston stroke, mm (inch) 82 (3.23)
Cylinder bore, mm (inch) 71 (2.8)
Compression ratio 9.5
10.0
Displacement 1299 cc (79.3 cu in)
Power output 55 kW (75 HP) at 6,000 rpm
62.5 kW (85 HP) at 6,000 rpm
68.5 kW (93 HP) at 6,000 rpm
Torque output 108 Nm (80 lb·ft) at 4,000 rpm
108 Nm (80 lb·ft) at 4,500 rpm
113 Nm (83 lb·ft) at 4,500 rpm
Redline 6,500
HP per liter 58
65
72
Fuel type Gasoline
Weight, kg (lbs) 113 (249)
Fuel consumption, L/100 km (mpg)
-City

-Highway
-Combined
Mitsubishi Lancer
9.1 (25.8)
5.4 (43.4)

6.9 (34.1)
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


250,000 – 300,000 (150,000 – 180,000)
Tuning, HP
-Max HP
-No life span loss

100+

The engine is installed in Mitsubishi Carisma
Mitsubishi Mirage
Mitsubishi Lancer
Mitsubishi Dingo
Mitsubishi Space Star
Hyundai Excel
CMC Veryca
Proton Saga
Proton Satria
Brilliance BS2
Emgrand EC7
Emgrand GL
Heyue Tongyue
Zotye Nomad

Mitsubishi 4G13 engine reliability, problems and repair

Now we will tell you about a typical simple Japanese engine from the 80s that belongs to the Mitsubishi Orion family. The engine was created for small cars like Mitsubishi Colt, Carisma, Lancer, Mirage, etc. It has a cast-iron cylinder block with a bore of 71 mm and a stroke of 82 mm, which results in the displacement of 1.3 l.

The cylinder block is covered by an aluminum SOHC cylinder head with 12 or 16 valves, depending on the model. This head does not have hydraulic lifters, therefore valve adjustment should be done after every 60,000 miles (100,000 km). For a hot engine, valve clearances should be 0.15 mm for intake and 0.25 mm for exhaust. For a cold engine, the clearance of the intake valve should be 0.07 mm, of the exhaust valve — 0.17 mm.
The camshaft is rotated by the timing belt, its service life is about 60,000 miles (100,000 km), after which it needs replacement. If you don’t do it in time, you are running the risk to get bent valves.
It is a very old engine; therefore, a carburetor is used in its first models. More modern modifications use the fuel injection system.
The 4G13 has the following firing order: 1-3-4-2.

The 4G13 engine has several related engines: the 1.6 4G18 and the 1.5 4G15.

The MMC Company stopped using the 4G13 in 2007 and now they install the newer 4A90 engine. Despite this fact, other manufacturers continued using this engine in their cars for a long time.

Mitsubishi 4G13 engine problems and malfunctions

It is the same 4G15, but with smaller capacity, therefore, the problems in these engines are the same (idling problem, vibration, high oil consumption, etc.). HERE you will find a detailed description of these problems.

Mitsubishi 4G13 engine tuning

How to make your 4G13 faster

Your engine is probably not in the best state, and before the installation of performance parts, it needs an overhaul. To get a bit extra power, you have to buy individual throttle bodies, do port and polish, buy the Piper cam (270/275 deg., lift 9.35/9.2 mm), an adjustable cam pulley, high compression pistons, a fuel pump, bigger fuel injectors, a 4-2-1 header, a 2-inch exhaust system, the Greddy E-Manage, and a lightweight flywheel. You can assemble and adjust all these mods, but you will waste a lot of money, and won’t get power because the displacement is very small. It is better to buy a 4G15 DOHC turbo in the very beginning: in the long run, it will be faster.

Turbo

Another way of boosting the power of your engine is forced induction. You can do the same thing that we wrote in an article about 4G15 HERE. However, you will have to use a smaller turbocharger, for example, Mitsubishi TD04 or an even smaller one – TD03. With TD04 you can get up to 250 HP, but it will only work starting from the mid-range rpm. An MMC TD03 turbocharger can give no more than 200 HP, but it will start working earlier.


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