Льигатель Mazda MZR LF 2.0 (Ford 2.0 Duratec HE)

The Mazda MZR LF engine (analogue of Ford 2.0 Duratec HE) is installed on Mazda 3, 5, 6, MX-5 III, etc. The gasoline engine is considered reliable, but not without its drawbacks.

Technical characteristics

An aluminum block with a head made of the same material has 4 cylinders in-line. The gas distribution mechanism (timing) - from two shafts with 16 valves: 2 each at the inlet and outlet, the design is called DOHC.

Other parameters:

• fuel-air mixture injection system - injection system with electronic control;
• piston stroke / cylinder diameter, mm - 83,1 / 87,5;
• timing drive - chain with an asterisk Ø48 mm;
• drive belt for engine auxiliary units - one, with automatic tension and length of 216 cm;
• engine power, hp from. - 145.

Engine displacement, cc	1998
Maximum power, hp	139 – 170
Maximum torque, N * m (kg * m) at rpm.	175 (18) to 4000 179 (18) to 4000 180 (18) to 4500 181 (18) to 4500 182 (19) to 4500
Fuel used	Petrol Regular (AI-92, AI-95) Petrol Premium (AI-98) Gasoline AI-95
Fuel consumption, l / 100 km	6.9 – 9.4
engine's type	in-line, 4-cylinder, DOHC
Add. engine information	multiport fuel injection, DOHC
Maximum power, h.p. (kW) at rpm	139 (102) to 6500 143 (105) to 6500 144 (106) to 6500 145 (107) to 6500 150 (110) to 6500
Compression ratio	10.8
Cylinder diameter, mm	87.5
The piston stroke, mm	83.1
The mechanism for changing the volume of cylinders	no
CO2 emission in g / km	192 – 219
Number of valves per cylinder	4

Consumption of 95 gasoline in mixed mode - 7,1 l / 100 km. One-time refueling with 5W-20 or 5W-30 engine oil - 4,3 liters. It takes 1 g per 500 thousand km.

Room location and modifications

The MZR L-series engine family includes 4-cylinder models with a volume of 1,8 to 2,3 liters. Combines them with a block of aluminum with cast iron cylinder liners, timing chain.

Known modifications:

1. L8 with regulated additional air supply - 1,8 dm³.
2. LF - the same, with a volume of 2,0. Subspecies: LF17, LF18, LFF7, LF62 differ in attachments. Models LF-DE, LF-VE are equipped with a variable intake manifold.
3. L3 with controlled air duct: damper in the air filter chamber - volume 2,3 l.
4. L5 - 2,5 liters with a cylinder bore increased to 89 mm and a piston displacement of 100 mm.

Where is the engine number

The factory marking of the MZR LF engine, as on the L8, L3 models, is stamped on the cylinder head block. You can find the license plate on the left side of the engine in the direction of the vehicle, closer to the corner part in a plane parallel to the windshield.

Disadvantages and the ability to increase power

MZR LF - the motor is unpretentious, there are no special problems with its operation. There are few cons:

• increased oil consumption - manifests itself with a mileage of 200 thousand km;
• a decrease in the performance of a gas pump - detected when accelerating: the engine does not work at full power;
• thermostat resource - up to 100 thousand km;
• timing chain - stretches already at a run of 250 thousand km, although it should withstand 500.

The increase in power is possible in two directions - by the method of chip tuning and mechanical tuning. The first method allows you to increase the torque and crankshaft revolutions by about 10%, which will provide 160-165 hp. from. It is carried out by flashing (correcting) the control unit program in a tuning company. A greater effect is achieved by the reconstruction of the air intake system with the replacement of some parts. In this case, the power increases by 30-40% and reaches 200-210 hp.