Mitsubishi 4G13
Mitsubishi 4G13 engine
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.
