A series of power units 4G64, nicknamed "Big Sirius", originates from the 80s. The engine was based on the 4G63, but eventually replaced the 4G54. The efforts of the designers of the Mitsubishi concern were not in vain, the active production and use of the engine continues to this day.
Technical specifications
Initially, an in-line 4-cylinder power unit was created for the Mitsubishi Galant. Now it is not so easy to buy a 4g64 engine from Japan, since it is equipped with cars of several automobile brands at once, and the production of the motor itself has been moved to China. The reason for such widespread use is reliability and rational fuel consumption, because with a fairly powerful volume of 2.4 liters, the engine consumes an average of 8.8 liters per 100 km.
To achieve such indicators, the developers used in his device:
- ductile iron for cylinder block;
- aluminum single-shaft 8-valve cylinder head;
- multi-point fuel supply;
- timing belt drive;
- balance shafts;
- hydraulic compensators.
Today, there are over 20 different car models that have ever had a 4g64 internal combustion engine installed. You can buy it in Moscow or in another city in Russia today by ads on the Internet or at showdowns. An approximate list of cars equipped with this unit is shown in the table.
How to increase the service life of the 4G64 unit
One of the most dangerous 4g64 problems is the problem with the balance shafts. It occurs due to the use of low-grade consumable fuels and lubricants and can lead to a complete loss of engine performance. Insufficient lubrication of the bearings on the shafts leads to their jamming, and, as a result, to the breakage of the timing belt drive and damage to the valves.
The elimination of this breakdown is quite expensive, so many experts, as a rule, recommend buying a Mitsubishi 2.4 4g64 engine for replacement in such a case.
Another reason for a replacement is the inexorable approach of a major overhaul. The presence of non-separable nodes greatly complicates its implementation. In addition, the cost of services of qualified specialists is quite high. In sum, everything translates into an indecent figure, which often equals the price of a used motor.
Import of power units under the contract
When the time comes to change the unit, it will be most profitable, choosing between a conventional used one and an imported ICE 4g64, to buy a contract one. The price of a motor without a run in the Russian Federation is often an order of magnitude higher, but, as practice shows, the service life is longer. And there is also a nice bonus: after receiving the engine in your hands, there is a chance to repair all identified problems, if any, due to warranty obligations from the seller.
Our company will help to quickly select a reliable 4g64 contract motor for everyone who is interested in buying this unit. To apply, fill out a special form on the website or call us by phone, and our specialists will take care of all the rest.
List of cars on which the ICE 4G64 was installed:
| Model | Years of installation | Power | |
| Mitsubishi CANTER flatbed | 2001 | 2010 | 132 |
| Mitsubishi GALANT III (E1_A) | 1985 | 1990 | 140-150 |
| Mitsubishi L 200 (K3_T, K2_T, K1_T, K0_T) | 1986 | 1992 | 132 |
| Mitsubishi L 300 bus (P0_W, P1_W, P2_W) | 1988 | 1997 | 128 |
| Mitsubishi L 300 bus | 1986 | 1997 | 112 |
| Mitsubishi L 300 van (P0_W, P1_W) | 1986 | 1997 | 128 |
| Mitsubishi L 300 van | 1986 | 1997 | 112 |
| Mitsubishi SAPPORO III (E16A) | 1987 | 1990 | 124 |
Mitsubishi 4G64 2.4L engine.
4G64 engine specifications
| Production | Shenyang Aerospace Mitsubishi Motors Engine Manufacturing Co Ltd Kyoto engine plant |
| Engine brand | Sirius |
| Release years | 1983-present |
| Block material | cast iron |
| Supply system | injector |
| Type | in-line |
| Number of cylinders | 4 |
| Valves per cylinder | 2 4 |
| Piston stroke, mm | 100 |
| Cylinder diameter, mm | 86.5 |
| Compression ratio | 8.5 9 9.5 11.5 (see description) |
| Engine volume, cc | 2351 |
| Engine power, hp / rpm | 112/5000 124/5000 132/5250 150/5000 150/5500 (see description) |
| Torque, Nm/rpm | 184/3500 189/3500 192/4000 214/4000 225/3500 (see modifications) |
| Fuel | 95 |
| Environmental regulations | up to Euro 5 |
| Engine weight, kg | ~185 |
| Fuel consumption, l/100 km (for Eclipse III) - city - track - mixed. |
10.2 7.6 8.8 |
| Oil consumption, g/1000 km | up to 1000 |
| Engine oil | 0W-40 5W-30 5W-40 5W-50 10W-30 10W-40 10W-50 10W-60 15W-50 |
| How much oil is in the engine, l | 4.0 |
| When replacing pour, l | ~3.5 |
| Oil change is carried out, km | 7000-10000 |
| Operating temperature of the engine, hail. | - |
| Engine resource, thousand km - according to the plant - on practice |
- 400+ |
| Tuning, HP - potential - no loss of resource |
1000+ - |
| The engine was installed | Mitsubishi Eclipse Mitsubishi Galant Mitsubishi Outlander Mitsubishi Montero/Pajero Mitsubishi RVR/Space Runner Hyundai Sonata Kia Sorento Mitsubishi Chariot/Space Wagon Mitsubishi Delica Mitsubishi L200/Triton Mitsubishi Magna Mitsubishi Sapporo Mitsubishi Starion Mitsubishi Tredia Mitsubishi Zinger Brilliance BS6 Chery V5 Chrysler Sebring Dodge Colt Vista/Eagle Vista Wagon Dodge Ram 50 Dodge Stratus Great Wall Hover Hyundai Grandeur |
Reliability, problems and repair of the Mitsubishi 4G64 2.4 liter engine.
Large Sirius (this family, in addition to our 64th, included: 4G63T, 4G61, 4G62, 4G63, 4G67, 4G69, 4D65 and 4D68) with a working volume of 2.4 liters was developed on the basis of the two-liter 4G63 and replaced the 4G54. The height of the 4G63 cast-iron cylinder block was increased from 229 mm to 235 mm, a crankshaft with a stroke of 100 mm was installed (it was 88 mm), the cylinder diameter was bored out to 86.5 mm (it was 85 mm), the balance shafts remained in place. The compression height of the pistons is 35 mm, the length of the connecting rods is 150 mm.
The cylinder head is aluminum 8-valve single-shaft, the compression ratio on such engines is 8.5, 4G64 SOHC 8V power is 112 hp at 5000 rpm, torque is 183 Nm at 3500 rpm. P Later, the cylinder head was replaced with a 16-valve single-camshaft (SOHC 16V), compression ratio increased to 9.5, power increased to 128-145 hp. at 5500 rpm, torque 192-206 Nm at 2750 rpm. Morelater one shaft was added and the cylinder head became DOHC 16V, compression ratio 9, power increased to 150-156 hp. at 5000 rpm, torque 214-221 Nm at 4000 rpm. At the same time, a version with direct fuel injection GDI was also produced, with a SOHC 16V head, a compression ratio of 11.5 and a power of 150 hp. at 5500 rpm, torque 225 Nm at 3500 rpm. This version was installed on Mitsubishi Galant, Space Wagon, Space Gear, Space Runner.
All these cylinder heads are 4G64 equipped with hydraulic compensators and valve adjustment is not required. The diameter of the intake valves is 33 mm, exhaust 29 mm.
In pthe timing drive uses a belt, a belt replacement is required every 90 thousand km.
4G64 production continues to this day, mainly for Chinese cars, and since 2003 an improved version of the 2.4 engine called 4G69 has been produced.
Problems and disadvantages of Mitsubishi 4G64 engines
Since this engine is nothing more than an enlarged 4G63, the problems with the motors are similar, you can read about them in detail.
Mitsubishi 4G64 engine tuning
DOHC+Camshafts
To increase the power of the 4G64 without a turbine, we need to remove the single-shaft cylinder head and buy a head from the 4th generation Hyundai Sonata (G4JS engine) along with the intake manifold, modify it, remove roughness, and align the channels. In addition, we need to purchase an Evo throttle body, cold air inlet, ARP studs, forged pistons for increased compression ratio (~11-11.5, for example Wiseco), Eagle connecting rods, remove balancer shafts, buy 272/272 camshafts with split gears and reinforced we take springs, a fuel rail from Galant, injectors with a capacity of 440-450 cc, a Walbro 255 pump, a 4-2-1 exhaust manifold (4-1 is possible), an exhaust on a 2.5″ pipe, additional small things and flashing. With all these components, the power of the 4G64 engine will rise to 200+ hp.
4G64T
For an even greater increase in power, the above modifications will not be enough and the motor must be inflated. The easiest way is to buy a cylinder head from Lancer Evolution, with everything attached, with a turbine, intercooler, fan, manifold, exhaust, which needs to be modified for the desired car. In addition, improvements will require oil supply to the turbine, at the same time, you will need ARP studs, 272 turbo camshafts with split gears and reinforced valve springs, forged piston (compression ratio ~ 8.5-9), Eagle connecting rods, you need to remove the balance shafts, buynozzles from Evo 560 cc or more efficient, Walbro 255 pump. After tuning, we get 400+ hp.
For increased torque on the 4G64, it is necessary to replace the crankshaft with 88 mm from Evo or lighter, 156 mm connecting rods (titanium for high power) and bore the cylinders to 87 mm, in total this will give 2.1 liters and very high engine speed. On such a bottom, you can put a Garrett GT42 with everything that comes with it and drive quite well ... in a straight line.
The main adjustments of the Mitsubishi 4G64 / 4G69 engine
Technical characteristics of the Mitsubishi 4G64 GDI engine
Working volume, l - 2.351
Cylinder diameter x piston stroke, mm - 86.5x100
Compression ratio - 8.5
Cylinder firing order - 1-3-4-2
Combustion chamber - Compact type
Valve drive mechanism - With one camshaft
Camshaft Drive - Timing Belt
Valve timing:
Intake valves - Open: 20° BTDC / Close: 64° BTDC
- Exhaust valves - Open: 64° BTDC / Close: 20° AFDC
Rocker Arm - Pilot Type
Hydraulic lifters - Installed
Mitsubishi 4G69 engine model parameters
2378(cm3) four-cylinder in-line gasoline engine with SOHC (4 valves per cylinder, single camshaft driven) valve timing, bore 87mm, stroke 100mm, compression ratio 11.5, maximum power 165L .With. at 6000 rpm, maximum torque 289 Hm at 4000 rpm, mixture formation - multipoint injection (ECI-MULTI).
Checking and adjusting the tension of drive belts for Mitsubishi 4G64 / 4G69 engines
Check that the drive belts are not damaged.
Check the tension by pressing in the center of the span of the belt between the pulleys with a force of 100 N. Measure the deflection of the drive belt.
Rated value:
Generator 7-10 mm
Power steering pump 6-10mm
A/C compressor 6.5-7.5mm
R Mitsubishi 4G64/4G69 engine alternator drive belt tension adjustment:
Loosen the alternator pivot bolt nut.
Loosen the lock bolt.
Turn the adjusting bolt to adjust the tension and deflection of the belt to nominal values.
Tighten the lock bolt.
Tighten the alternator pivot bolt nut.
Turn the engine crankshaft one or more revolutions.
Rated value: 7-10 mm.
Adjusting the tension of the power steering pump drive belt:
Loosen the power steering pump mounting bolts.
By moving the power steering pump, adjust the drive belt tension.
Tighten the mounting bolts in the sequence shown.
Rotate the Mitsubishi 4G64/4G69 engine crankshaft one revolution or more.
Check belt tension.
Rated value:
Used belt - 7 mm
New belt - 5.5 mm
Adjusting the tension of the air conditioning compressor drive belt:
Loosen the tensioner pulley lock nut.
Adjust belt tension.
Tighten the lock nut.
Turn the engine crankshaft one revolution or more.
Check belt tension.
Rated value:
Used belt - 6.5-7.5 mm
New belt - 5-6 mm
Rice. 1. Adjusting the tension of the Mitsubishi 4G64 GDI engine drive belt
20 - Power Steering Pump Drive Belt, 21 - Power Steering Pump, 22 - Upper Radiator Hose, 23 - Timing Belt Upper Cover, 24 - PCV Hose Connection, 25 - Cylinder Head Cover, 26 - Exhaust Mounting Nut manifold and exhaust pipe, 27 - Camshaft sprocket, 28 - Intake manifold strut mounting bolt, 29 - Coolant pipe, 30 - Cylinder head mounting bolt, 31 - Cylinder head assembly, 32 - Cylinder head gasket
Checking the hydraulic compensator of the Mitsubishi 4G64 / 4G69 engine
Immediately after starting the engine or while the engine is running, if an extraneous (rattling) sound is heard that comes from the hydraulic compensator, turn it off and perform the following check.
Check engine oil and add or change oil if necessary.
If the amount of oil is insufficient, then air enters through the oil intake strainer into the lubrication system channel.
If the amount of oil is too high, the oil is agitated excessively as the crankshaft rotates, and a large amount of air enters the oil.
Air and oil will not easily separate if the oil is old (lost its properties - degenerated) and the amount of air in the oil increases.
If air enters the high pressure chamber of the hydraulic compensator, it will be compressed inside it during the opening of the valve, and as a result of this the hydraulic compensator plunger will "sag" and increased valve noise will be heard.
This is the same effect as if the valve clearance is not adjusted (too much clearance).
The operation of the Mitsubishi 4G69 / 4G64 hydraulic compensator will become normal when the air that has entered it is removed.
To bleed air from the hydraulic compensator, start the engine and gently depress the accelerator pedal several times (10 times or less).
If the increased noise has disappeared, then the air has been removed from the high pressure chamber, and the operation of the hydraulic lifter has returned to normal.
First, gradually increase the engine speed from idling to 3000 rpm (within 30 seconds), and then gradually decrease the engine speed back to idling (within 30 seconds).
If the vehicle is parked on a slope for a long time, sometimes the amount of oil in the hydraulic lifter may decrease and air will enter the high pressure chamber when the Mitsubishi 4G64 GDI engine is started.
If the car is parked for a long time, oil will come out of the lubrication system channel.
Therefore, it takes a short period of time to supply oil to the hydraulic compensator (air can sometimes get into the high pressure chamber).
If the noise persists, check the hydraulic lifter according to the following procedure.
Stop the engine.
Set the number one piston to TDC on the compression stroke.
Press the rocker arms and check if the rocker moves down or not.
Slowly rotate the crankshaft 360° clockwise.
Check the rocker arms of the Mitsubishi 4G64 / 4G69 engine valves.
If the valve rocker moves down when pressed, replace the hydraulic compensator.
When replacing a hydraulic lifter, bleed all of the hydraulic lifters, and then follow the initial procedures.
In addition, if excessive resistance is felt when pressing the rocker arm, and the rocker arm does not go down, then the hydraulic compensator is in order and the cause of the malfunction is different.
Checking and adjusting the ignition timing of the Mitsubishi 4G64 / 4G69 engine
Insert a paper clip into the 1-pin connector between the ignition coil primary circuit and the noise suppression resistor.
The connector must not be disconnected.
Insert a paperclip along the tab on the opposite side of the connector latch.
Connect the tachometer test lead to relieve voltage in the primary circuit of the ignition coil to the paper clip installed in the connector.
Do not use MUT or MUT-II. If MUT or MUT-II is connected to the diagnostic connector, the instrument will show the current ignition timing, not the base angle.
Start the Mitsubishi 4G69/4G64 engine and let it idle.
Check that the idle speed corresponds to the nominal value. Rated value: 750±100 rpm.
Turn off the "ignition" (key position "OFF").
Install a stroboscope.
Remove the waterproof plug from the basic ignition timing connector (brown).
Using a wire with a connector, connect the output of the basic advance angle adjustment connector to ground.
Grounding this connector puts the Mitsubishi 4G64/4G69 engine into basic ignition timing mode.
Start the engine and let it idle.
Check the value of the basic ignition timing, which should be within the specified limits. Rated value: 5° to TDC ±2°
If the basic ignition timing does not correspond to the nominal value, then adjust the ignition timing by turning the distributor housing.
The ignition timing will decrease if the ignition distributor is turned clockwise and will increase if the ignition distributor is turned counterclockwise.
After adjusting the ignition timing, carefully tighten the fastening nut so as not to move the ignition distributor.
Stop the engine, disconnect the connector wire from the ignition timing adjustment connector terminal (brown), and install a waterproof plug into the connector.
Start the Mitsubishi 4G64/4G69 engine and check that the ignition timing is correct.
Rated value: approximately 8° BTDC.
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Mitsubishi 4G64 engine
Technical characteristics of the Mitsubishi 4G64 GDI engine
Working volume, l - 2.351
Cylinder diameter x piston stroke, mm - 86.5x100
Compression ratio - 8.5
Cylinder firing order - 1-3-4-2
Combustion chamber - Compact type
Valve drive mechanism - With one camshaft
Camshaft Drive - Timing Belt
Valve timing:
Intake valves - Open: 20° BTDC / Close: 64° BTDC
- Exhaust valves - Open: 64° BTDC / Close: 20° AFDC
Rocker Arm - Pilot Type
Hydraulic lifters - Installed
Mitsubishi 4G69 engine model parameters
2378(cm3) four-cylinder in-line gasoline engine with SOHC (4 valves per cylinder, single camshaft driven) valve timing, bore 87mm, stroke 100mm, compression ratio 11.5, maximum power 165L .With. at 6000 rpm, maximum torque 289 Hm at 4000 rpm, mixture formation - multipoint injection (ECI-MULTI).
Checking and adjusting the tension of drive belts for Mitsubishi 4G64 engines
Check that the drive belts are not damaged.
Check the tension by pressing in the center of the span of the belt between the pulleys with a force of 100 N. Measure the deflection of the drive belt.
Rated value:
Generator 7-10 mm
Power steering pump 6-10mm
A/C compressor 6.5-7.5mm
Mitsubishi 4G64 engine alternator drive belt tension adjustment:
Loosen the alternator pivot bolt nut.
Loosen the lock bolt.
Turn the adjusting bolt to adjust the tension and deflection of the belt to nominal values.
Tighten the lock bolt.
Tighten the alternator pivot bolt nut.
Turn the engine crankshaft one or more revolutions.
Rated value: 7-10 mm.
Adjusting the tension of the power steering pump drive belt:
Loosen the power steering pump mounting bolts.
By moving the power steering pump, adjust the drive belt tension.
Tighten the mounting bolts in the sequence shown.
Rotate the crankshaft one revolution or more.
Check belt tension.
Rated value:
Used belt - 7 mm
New belt - 5.5 mm
Adjusting the tension of the air conditioning compressor drive belt:
Loosen the tensioner pulley lock nut.
Adjust belt tension.
Tighten the lock nut.
Turn the engine crankshaft one revolution or more.
Check belt tension.
Rated value:
Used belt - 6.5-7.5 mm
New belt - 5-6 mm
Rice. 148. Adjusting the tension of the Mitsubishi 4G64 GDI engine drive belt
20 - Power Steering Pump Drive Belt, 21 - Power Steering Pump, 22 - Upper Radiator Hose, 23 - Timing Belt Upper Cover, 24 - PCV Hose Connection, 25 - Cylinder Head Cover, 26 - Exhaust Mounting Nut exhaust manifold and downpipe, 27 - Camshaft sprocket, 28 - Intake manifold strut bolt, 29 - Coolant pipe, 30 - Cylinder head bolt, 31 - Cylinder head assembly, 32 - Gasket
cylinder heads.
The 4G64 motor is a large power unit manufactured by Mitsubishi. A lot of modern engines of the 4G series were developed on the basis of the installation. The applicability of the engine is quite wide and many vehicle models received this unit.
Specifications and design
The 4G64 is a popular Mitsubishi Motors engine from the Sirius family. He replaced the 4G54, which is obsolete. Compared to its predecessor, the height of the cast iron block has been increased by 6 mm.
Mitsubishi with 4G64 engine.
A crankshaft with a stroke of 100 mm (it was 88 mm) was installed in the block, the cylinder diameter was bored out to 86.5 mm (it was 85 mm), the balance shafts remained in place. The compression height of the pistons is 35 mm, the length of the connecting rods is 150 mm.
The cylinder head is aluminum and hides 8 valves. But, over time, it became clear that this was not enough, and the cylinder head received 16 valves. In both cases, hydraulic compensators are installed, which excludes valve adjustment.
A significant disadvantage is the presence of a belt, which, if broken, will lead to bent valves. The timing belt should be changed every 90 thousand kilometers.
Motor 4G64.
Technical characteristics of the 4G64 motor:
Name | Characteristics |
Manufacturer | Shenyang Aerospace Mitsubishi Motors Engine Manufacturing Co Ltd |
Motor brand | |
2.4 liters (2351 cc) |
|
Injector |
|
Power | |
Cylinder diameter | |
Number of cylinders | |
Number of valves | |
Fuel consumption | 8.8 liters for every 100 km in mixed mode |
Engine oil | 5W-30 |
400+ thousand km |
|
Applicability | Mitsubishi Eclipse |
Service
Maintenance of the 4G64 power unit is carried out as standard for the entire line of motors. The service interval, according to the manufacturer's standards, is 10,000 km. To save the engine resource, it is recommended to carry out the oil and filter change procedure every 8,000 km.
Faults and repairs
Like all powertrains, the 4G64 has a number of flaws that appear throughout the entire production line. Let's consider the main ones:
- balancing shafts. Insufficient lubrication can lead to jamming of the shafts, and, accordingly, will break the timing belt. Long live head repair. It is recommended to fill in only high-quality engine oil and carry out maintenance on time.
- Motor vibration. This means that the motor mount has worn out.
- Floats idle. In this case, the problem may occur in one of the nodes: injectors, temperature sensor, dirty throttle and idle speed control.
Conclusion
The 4G64 engine is a fairly powerful and reliable power unit manufactured by Mitsubishi Motors. He loves high-quality parts and consumables, and is quite picky about fuel. Maintenance is recommended every 8000 km.
