Repair and service of passenger cars. Repair and service of passenger cars Which cars are installed

Mitsubishi 4G64 2.4 liter engine.

4G64 engine specifications

Production	Shenyang Aerospace Mitsubishi Motors Engine Manufacturing Co Ltd Kyoto engine plant
Engine brand	Sirius
Years of release	1983-present
Cylinder block material	cast iron
Supply system	injector
A type	inline
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 displacement, cubic cm	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 standards	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, gr. / 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 pouring, l	~3.5
Oil change is carried out, km	7000-10000
Engine operating temperature, deg.	-
Engine resource, thousand km - according to the plant - on practice	- 400+
Tuning, hp - potential - without 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 bore was bored to 86.5 mm (it was 85 mm), the balance shafts remained in place. Compression piston height 35 mm, connecting rod length 150 mm.
The cylinder head is aluminum 8-valve single-shaft, the compression ratio on such engines is 8.5, power of 4G64 SOHC 8V is equal to 112 hp at 5000 rpm, torque is 183 Nm at 3500 rpm. Plater, the cylinder head was replaced by a 16 valve with one camshaft (SOHC 16V), the compression ratio was increased to 9.5, the power increased to 128-145 hp. at 5500 rpm, torque 192-206 Nm at 2750 rpm. Yetlater they added one shaft 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 4G64 cylinder heads equipped with hydraulic lifters and valve adjustment is not required. The diameter of the intake valves is 33 mm, the exhaust valves are 29 mm.
In nthe timing drive uses a belt; 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.

Mitsubishi 4G64 engine problems and malfunctions

Since this engine is nothing more than an enlarged 4G63, then the problems of 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) together with an intake manifold, modify it, remove roughness, and combine the channels. In addition, we need to get an Evo throttle body, cold intake, ARP studs, forged pistons for an increased compression ratio (~ 11-11.5, for example Wiseco), Eagle connecting rods, remove balance shafts, buy 272/272 camshafts with split gears and reinforced springs, a fuel rail from Galant, injectors with a capacity of 440-450 cc, a Walbro 255 pump, an exhaust manifold 4-2-1 (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 rises 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, an intercooler, a fan, a manifold, an exhaust, which needs to be modified for the desired car. In addition, the oil supply to the turbine will require improvements, at the same time, you will need ARP pins, 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, buyinjectors from Evo 560 cc or more efficient, Walbro 255 pump. After tuning we get 400+ hp.
For the increased torsion of the 4G64, it is necessary to replace the crankshaft with 88 mm from Evo or a lightweight, 156 mm connecting rods (titanium for high power) and bore the cylinders to 87 mm, in total this will give 2.1 liters and a very high engine speed. On such a bottom, you can put the Garrett GT42 with everything that comes with it and go pretty well ... in a straight line.

Basic adjustments of the Mitsubishi 4G64 / 4G69 engine

Technical characteristics of the Mitsubishi 4G64 GDI engine

Working volume, l - 2.351

Bore x stroke, mm - 86.5x100

Compression ratio - 8.5

The order of the cylinders - 1-3-4-2

Combustion chamber - Compact type

Valve Actuator - Single Camshaft

Camshaft drive - Toothed belt

Gas distribution phases:

Intake valves - Opening: 20 ° before TDC / Closing: 64 ° after BDC
- Exhaust valves - Opening: 64 ° before TDC / Closing: 20 ° after TDC

Valve Rocker - Guide Type

Compensators - Installed

Mitsubishi 4G69 engine model parameters

4-cylinder in-line petrol engine with a displacement of 2378 (cm3), with SOHC valve timing (4 valves per cylinder, driven by one camshaft), bore 87 mm, stroke 100 mm, compression ratio 11.5, maximum power 165 l .from. at 6000 rpm., maximum torque 289 Nm at 4000 rpm., the method of forming the working mixture - multi-point injection (ECI-MULTI).

Checking and adjusting the tension of the drive belts of Mitsubishi 4G64 / 4G69 engines

Check that the drive belts are not damaged.

Check the tension by pressing in the center of the belt span between the pulleys with a force of 100 N. Measure the drive belt deflection.

Nominal value:

Generator 7-10 mm
Power steering pump 6-10 mm
Air conditioning compressor 6.5-7.5 mm

R adjusting the tension of the alternator drive belt of the Mitsubishi 4G64 / 4G69 engine:

Loosen the alternator pivot bolt nut.

Loosen the locking bolt.

Turn the adjusting bolt to adjust the belt tension and deflection to the nominal values.

Tighten the locking bolt.

Tighten the alternator pivot bolt nut.

Crank the engine one or more revolutions.

Nominal value: 7-10 mm.

Adjusting the tension of the power steering pump drive belt:

Loosen the power steering pump mounting bolts.

Adjust the tension of the drive belt while moving the power-assisted steering pump.

Tighten the mounting bolts in the sequence shown.

Crank the Mitsubishi 4G64 / 4G69 engine one revolution or more.

Check the belt tension.

Nominal value:

Used belt - 7 mm
New belt - 5.5mm

Adjusting the tension of the air conditioning compressor drive belt:

Loosen the tensioner pulley lock nut.

Adjust the belt tension.

Tighten the lock nut.

Crank the engine one revolution or more.

Check the belt tension.

Nominal value:

Used belt - 6.5-7.5 mm
New belt - 5-6 mm

Figure: 1. Adjusting the tension of the drive belt of the Mitsubishi 4G64 GDI engine

20 - Power steering pump drive belt, 21 - Power steering pump, 22 - Upper radiator hose, 23 - Upper timing belt cover, 24 - Positive crankcase ventilation hose connection, 25 - Cylinder head cover, 26 - Exhaust nut manifold and exhaust pipe, 27 - Camshaft sprocket, 28 - Intake manifold strut mounting bolt, 29 - Cooling system 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 from the hydraulic compensator, muffle it and perform the following check.

Check the 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 channel of the lubrication system.

If the amount of oil is too high, the oil is shaken excessively when 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, the hydraulic compensator plunger will "sink" and an increased noise of the valves will be heard.

This is the same effect as if the valve clearance is not adjusted (clearance too large).

The operation of the hydraulic lifter of Mitsubishi 4G69 / 4G64 will become normal when the air trapped in it is removed.

To remove air from the hydraulic lifter, start the engine, and gently press the accelerator pedal several times (10 times or less).

If the increased noise disappeared, then the air was removed from the high pressure chamber, and the operation of the hydraulic compensator returned to normal.

First, gradually increase the engine speed from idle to 3000 rpm (within 30 seconds), and then gradually decrease the engine speed back to idle (within 30 seconds).

If the car 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 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 increased noise persists, then check the hydraulic lifter according to the following procedure.

Stop the engine.

Set the piston of the first cylinder to TDC of the compression stroke.

Step on the rocker arms and check if the rocker arm moves downward or not.

Rotate the crankshaft slowly 360 ° clockwise.

Check the rocker arms of the Mitsubishi 4G64 / 4G69 engine.

If the rocker arm moves down after pressing, replace the hydraulic compensator.

When replacing the hydraulic lifters, bleed all lifters and then follow the initial procedures.

In addition, if excessive resistance is felt when the rocker arm is pressed 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 primary circuit of the ignition coil and the suppression resistor.

The connector must not be disconnected.

Insert a paperclip along the terminal 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 a 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 device will show the current ignition timing, and not the base angle.

Start the Mitsubishi 4G69 / 4G64 engine and let it idle.

Check that the idle speed is correct. Nominal value: 750 ± 100 rpm.

Switch off the "ignition" (key position "OFF").

Install a stroboscope.

Remove the waterproof plug from the base timing adjustment connector (brown).

Using a wire with a connector, connect the lead of the connector for adjusting the base angle of the advance to ground.

Grounding this connector will put the Mitsubishi 4G64 / 4G69 engine into base ignition timing.

Start the engine and let it idle.

Check the value of the basic ignition timing, which should be within the specified limits. Nominal value: 5 ° to TDC ± 2 °

If the base 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 retaining nut so as not to move the ignition distributor.

Stop the engine, disconnect the wire from the connector from the timing control connector (brown) and install the waterproof plug in the connector.

Start the Mitsubishi 4G64 / 4G69 engine and check that the ignition timing is within the rated value.

Nominal value: approx. 8 ° to TDC.

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Mitsubishi 4G64 engine

Technical characteristics of the Mitsubishi 4G64 GDI engine

Working volume, l - 2.351

Bore x stroke, mm - 86.5x100

Compression ratio - 8.5

The order of the cylinders - 1-3-4-2

Combustion chamber - Compact type

Valve Actuator - Single Camshaft

Camshaft drive - Toothed belt

Gas distribution phases:

Intake Valves - Opening: 20 ° before TDC / Closing: 64 ° after BDC
- Exhaust valves - Opening: 64 ° before TDC / Closing: 20 ° after TDC

Valve Rocker - Guide Type

Compensators - Installed

Mitsubishi 4G69 engine model parameters

4-cylinder in-line petrol engine with a displacement of 2378 (cm3), with SOHC valve timing (4 valves per cylinder, driven by one camshaft), bore 87 mm, stroke 100 mm, compression ratio 11.5, maximum power 165 l .from. at 6000 rpm, maximum torque 289 Nm at 4000 rpm, the method of forming the working mixture is multipoint injection (ECI-MULTI).

Checking and adjusting the tension of drive belts of Mitsubishi 4G64 engines

Check that the drive belts are not damaged.

Check the tension by pressing in the center of the belt span between the pulleys with a force of 100 N. Measure the drive belt deflection.

Nominal value:

Generator 7-10 mm

Power steering pump 6-10 mm

Air conditioning compressor 6.5-7.5 mm

Adjusting the tension of the alternator drive belt of the Mitsubishi 4G64 engine:

Loosen the alternator pivot bolt nut.

Loosen the locking bolt.

Turn the adjusting bolt to adjust the belt tension and deflection to the nominal values.

Tighten the locking bolt.

Tighten the alternator pivot bolt nut.

Crank the engine one or more revolutions.

Nominal value: 7-10 mm.

Adjusting the tension of the power steering pump drive belt:

Loosen the power steering pump mounting bolts.

Adjust the tension of the drive belt while moving the power-assisted steering pump.

Tighten the mounting bolts in the sequence shown.

Turn the crankshaft one revolution or more.

Check the belt tension.

Nominal value:

Used belt - 7 mm
New belt - 5.5mm

Adjusting the tension of the air conditioning compressor drive belt:

Loosen the tensioner pulley lock nut.

Adjust the belt tension.

Tighten the lock nut.

Crank the engine one revolution or more.

Check the belt tension.

Nominal value:

Used belt - 6.5-7.5 mm
New belt - 5-6 mm

Figure: 148. Adjusting the tension of the drive belt of the Mitsubishi 4G64 GDI engine