4G63 Engine Review


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The 4G63 motor is one of the Mitsubishi Sirius 4G6 range. The manufacture of this 2.0 L 4-cylinder naturally aspirated gasoline engine started in 1980. Besides, it has a version with a turbocharger, the 4G63T. 4G63 is built on the framework of G63B, an 8V motor with SOHC carburetor, employed for several Mitsubishi automobiles till 1988. 4G63 was featured in a great number of cars, including Mitsubishi, Hyundai, Plymouth, Dodge, and Eagle. Moreover, the motor was updated several times and some new features were added.

The motor cylinder block is made of cast iron. It has two balance shafts, crankshaft and rods of forged steel, pistons, made either of cast aluminum or aluminum with steel pieces. As the motor has several variations, it’s available with different cylinder heads, including 8V SOHC, 16V SOHC, and 16V DOHC. Intake and exhaust camshafts are controlled by the timing belt. So does a single camshaft.

Using rocker arms, the single camshaft sets in motion intake and exhaust valves. But it’s necessary to regulate the valve clearances. In 1987, the brand launched the construction of double overhead camshafts with rocker arms, but no adjustments were required thanks to the automatic valve clearance. The intake valve is 33 mm wide while the exhaust one is 29 mm. The whole range of 4G63 motors utilizes ECI-MULTI, a multi-point fuel injection system with electronic ignition.

Mitsubishi 4G63 Engine Specs

The breakdown of the engine code is as follows:

  • CA – Engine Family
  • 18 – 1.8 Liter Displacement
  • D – DOCH (Dual Overhead Camshafts)
  • E – Multi-Point Fuel Injection
Manufacturer Shenyang Aerospace Mitsubishi Motors Engine Manufacturing Co Ltd
Mizushima Plant
Production 1981-nowadays
Construction Aluminum Head
Type In-line OHV, SOHC
Cam Timing MIVEC intake
Number of cylinders 4
Combustion chamber Pentroof type

Total displacement dm3
Cylinder bore mm 85.0
Piston stroke mm 88.0
Compression ratio 10
Valve timing Intake valve:

  • Opens (BTDC) – 18
  • Closes (ABDC) – 58

Exhaust valve:

  • Opens (BBDC) – 58
  • Closes (ATDC) – 18
Power output h.p at rpm 109/5500
Lubrication system Pressure feed, full-flow filtration
Oil pump type Involute gear type
Auto-tensioner rod projection length mm 12
Camshaft journal outer diameter mm 45
Valve face angle mm 45 degree – 45.5 degree
Valve seat valve contact width mm 0.9 – 1.3
Piston outer diameter mm 85.0
Oil consumption, L/1000 km
(qt. per miles)
up to 1.0
(1 qt. per 750 miles)
Recommended engine oil 0W-40
Engine oil capacity, L 4.0
Oil change interval, km (miles) 7,000-10,000
Engine lifespan, km (miles)
– Official information
– Real

400,000+ (245,000+)

Tuning, HP
– Max HP
– No life span loss


Engine modifications and generations

  1. 4G631 – version with one camshaft and 16 valves (SOHC 16V), the compression ratio – 10, with a capacity of 133 hp at 6000 rev / min, 176 Nm of torque at 4750 rev / min. It fits on Mitsubishi Galant E33, Chariot / Space Wagon and others.
  2. 4G632 – SOHC 16V, a compression ratio of 10, with a capacity of 137 hp at 6000 rev / min, 176 Nm of torque at 4750 rev / min. It fits on Mitsubishi Galant E55 and others.
  3. 4g63-engine4G633 – 8 valve version SOHC 8V, 9 compression ratio, capacity of 109 hp at 5500 rev / min, 159 Nm of torque at 4500 rev / min. It fits on Mitsubishi Galant E33, Chariot / Space Wagon and others.
  4. 4G635 – twin-shaft variation DOHC 16V, 9.8 compression ratio, with a capacity of 144 hp at 6500 rev / min, 170 Nm of torque at 5000 rev / min. It fits on Mitsubishi Galant E33, Eclipse and others.
  5. 4G636 – SOHC 16V, a compression ratio of 10, with a capacity of 133 hp at 6000 rev / min, 176 Nm of torque at 4750 rev / min. Fits on Mitsubishi Galant E33 / EA2A, Chariot / Space Wagon, RVR / Space Runner and others.
  6. 4G637 – DOHC 16V, the compression ratio of 10.5, with a capacity of 135 hp at 5750 rev / min, 176 Nm of torque at 4500 rev / min. Sets at 9 Mitsubishi Lancer, Outlander, and others.

What cars is the 4G63 engine compatible with?

Model Years Produced
Nissan Pulsar NX SE (USA and Canada)
Nissan EXA (Australia and Japan)
Nissan Skyline 1800I (HR31),(Japan) 1985-1991
Nissan Silvia (S13) 1989-1990
Nissan Sunny N13 (UK)
Nissan Sunny B12 Coupe (UK)
Nissan Bluebird T72 (UK)
Nissan Bluebird 1987-1989
Nissan Auster 1985-1990
Nissan EXA (Australia) 1988-1991

4G63 Engine problems

The quality of fuel and oil plays an incredible role in the longevity of the motor. If you fail to change the oil in time, you may face the malfunction of the hydraulic valve lifters. The engine failure may be caused by the wedged bearings of balance shafts, which, in their turn, can be a result of using bad quality oil and the pollution of the oil system. The belt must be also examined regularly. In addition, it’s possible to acquire a balance shaft eliminator kit and place it in an oil pump.

On the whole, 4G63 is a safe motor with an average run of 200,000-250,000 miles or 300,000-400,000 kilometers. The good news is that it’s not hard to find all the necessary details for this engine for sale as well as renovate it.


Mitsubishi 4G63T Engine (Turbo)

The 4G63T engine was built on the framework of 4G63 and was manufactured in 1987-2007. It’s a 2.0L naturally aspirated motor with a turbocharger. It was primarily employed in Mitsubishi Lancer Evolution vehicles till 2006, when it was substituted with 4B11T turbocharged version.

The 229 mm cylinder block is made of cast iron. It features powerful crankshaft and forged rods with the length of 150 mm. The engine has a lower compression index than its predecessor. Oil jets and cooling pistons are other characteristics of the motor. The engine features 16V cylinder head of aluminum with double overhead camshafts controlled by belt.

The Mitsubishi engineers restyled the intake and exhaust systems, including intake and exhaust manifolds and 60 mm throttle body. After the compressed air gets to a turbocharger, it’s cooled by a big intercooler. The more air gets the more fuel is consumed. That’s why an engine keeps heavy-duty fuel injectors 450/390 cc. In comparison, engines without turbochargers keep injectors 240/210 cc.

The 4G63T had three generations as the company aspired to create a more powerful and high-performance motor. It was mainly utilized for Mitsubishi Galant VR-4 and Lancer Evolution automobiles.

4G63T on Mitsubishi Lancer Evo IX:

  • Type – TD05HRA-16G6C-10.5T
  • Compressor inlet – 41.00 mm
  • Compressor inducer – 48.30 mm
  • Compressor exducer – 68.00 mm
  • Turbine wheel – 56.00 mm

4G63T Engine Problems

The major part of the motor troubles coincides with the ones of 4G63. So, it’s important to keep the oil system in order, use only good quality oil and change it in time. Otherwise, you will face with bearings of the balance shafts and, later, with the damaging of the timing belt. As a result, pistons and valves will start to function improperly. To prevent these damages, take care about the oil system and use a balance shaft eliminator kit.

The neglecting of the oil system may also decrease the longevity of hydraulic valve lifters. Their average run is 35,000-40,000 miles.

The motor is rather durable and can run for 200,000-250,000 miles or 300,000-400,000 kilometers. Besides, the engine was often used for tuning cars, especially racing ones.

The 4G63T made the 4G63 motor well-known around the world thanks to the success of Mitsubishi vehicles at rally races. Along with this 2.0L motor, the brand also launched the production of 2.4L 4G64. By 1988, this engine was substituted with the 2.0L 4B11 one. However, some car manufacturers in China still utilize these motors for the construction of new cars.

4G63 Tuning and swap

The easiest and the most affordable way to increase the atmospheric 4G63 power is to put shafts. Our choice falls on camshafts with phase 264/264, we add the cold inlet, Exhaust as 4-2-1, and firmware. This allows the motor to increase its capacity on 15-20 hp.

For turbo tuning of the 4G63 you need to buy a connecting rod and piston group, liners, pan, head, head gasket, turbine, intercooler, intake manifold, rail, injectors, fuel pump, exhaust, ECU, engine mounts, everything from the Evolution, welded an exhaust manifold, assemble and set up, and eventually you obtain power as in EVO.

Alternatively, you can just buy the engine Mitsubishi RVR Turbo, with TD04 and swap it. But you must know that the EVO engine won’t be established easily, – need improvement.

4G63 intake manifold and 4G63 exhaust manifold instruction you can find at 4g63 guide

4G63 Engine parts

Last update on 2021-07-07 / Affiliate links / Images from Amazon Product Advertising API

Dan Hoffman

Dan is a co-founder of Engineswork. He knows everything about internal combustion engines. Ask your questions in comments down below this article - he will be glad to help you anytime.

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