K7M 740 Renault K7M 740

Атмосферний 4-циліндровий двигун, відомий своєю простотою та надійністю, але з обмеженими можливостями для тюнінгу.

Brand: Dacia Type: Petrol Configuration: Inline-4 Production Years: 1998 - 2008 Production: Flins, France
14 Brand engines
6 Modifications

Technical Specifications

Engine Displacement 1.4 L (1,690 cc)
Configuration Inline-4
Number of Cylinders 4
Valves per Cylinder 8
Power 90 - 110 л.с.
Torque 130 - 150 Н*м
Cylinder Bore 82.00 mm
Piston Stroke 90.00 mm
Compression Ratio 9.5:1
Firing Order 1-3-4-2
Fuel System Multi-point Fuel Injection
Aspiration Naturally Aspirated
Intercooler No
Maximum RPM 6,000 rpm
Max Torque RPM 3,500 rpm
Valve Train DOHC
Timing Drive Belt
Timing belt replacement interval 60,000 km
Block Material Cast Iron
Head Material Aluminum
Engine Weight 130 kg
Dimensions (L×W×H) 600 × 500 × 600 mm
Lubrication System Wet sump
Cooling System Liquid cooling

Additional Information

Engine Family Renault K engine series
Manufacturing Plant Flins, France
Successor K4M

Maintenance

Engine Oil Capacity 4.5 L (with filter: 5 L)
Recommended Viscosity 10W-40
Oil Standard ACEA A3/B3
Recommended Brands Total Quartz, Elf Evolution, Castrol GTX
Oil Change Interval 15 000 km or 12 mo
Oil Filter 7701061345
Air Filter 7701061346
Replace every 30 000 km
Fuel filter 7701061347
Spark Plugs Type: Copper
Part number: 7701061348
Gap: 0.8 mm
Quantity: 4 pcs
Replace every 30 000 km
Coolant Capacity 6 L
Coolant Type G12 (Renault Coolant)
Coolant Change Interval 240 000 km
Thermostat Opening Temperature 85°C
Operating Temperature 90°C
Max Operating Temperature 120°C
Critical Temperature 130°C
Annual Maintenance Cost 500-800 USD

Reliability

Reliability rating: 7/10

Expected lifespan: 250 000 km

Common problems

Problem Severity Mileage Repair cost
Timing belt failure Medium 60000-80000 km $300-500
Oil leaks from gaskets Low 80000-120000 km $100-200

Known defects

  • Oil consumption issues in early models
  • Head gasket failures

Warranty extensions

  • Standard warranty up to 3 years or 100000 km

Tuning potential

Tuning potential: Medium | Max. safe power: 180 hp

Stage Power Torque Method Cost
Stage 1 120 hp 160 Nm ECU remap only
Reliability impact: Minimal 		$300
Stage 2 140 hp 180 Nm -
Required: High-flow air filter, ECU remap
Reliability impact: Low 		$800
Stage 3 160 hp 200 Nm -
Required: Turbocharger kit, ECU remap
Reliability impact: Medium 		$2000

Popular modifications

  • Cold air intake
  • Performance exhaust
  • ECU tuning

Tuning limitations

  • Limited by stock internals
  • Cooling system upgrades recommended for high power

Cars with the K7M 740 engine

This engine was fitted to 5 models

Photo Brand Model Generation Production years
No photo
 Dacia SuperNova SupeRNova 2000 - 2003
No photo
 Dacia Logan Logan I (MCV) 2004 - 2012
No photo
 Dacia Nova Nova (A1) 1995 - 2000
No photo
 Renault 19 19 Chamade (X53) 1996 - 2002
No photo
 Renault Lutecia Lutecia I (B/C53) 1991 - 1996

All modifications (6)

Vehicle Generation Modification Power Gearbox Drive
Dacia SuperNova SupeRNova 1.4 75 л.с. 5-МКП 2WD 75 hp 5-МКП 2WD
Dacia SuperNova SupeRNova 1.4 75 л.с. 4-Автомат 2WD 75 hp 4-Автомат 2WD
Dacia Logan Logan I (MCV) 1.4 75 л.с. 5-МКП 2WD 75 hp 5-МКП 2WD
Dacia Nova Nova (A1) 1.4 75 л.с. 5-МКП 2WD 75 hp 5-МКП 2WD
Renault 19 19 Chamade (X53) 1.4 75 л.с. 5-МКП 2WD 75 hp 5-МКП 2WD
Renault Lutecia Lutecia I (B/C53) 1.4 16V 90 л.с. 5-МКП 2WD 90 hp 5-МКП 2WD

Interesting Facts

  • K7M engine is known for its reliability and simplicity.
  • Widely used in various Renault and Dacia models.

Applications

Total produced: 500000

Vehicle Generation Years Power Markets
Dacia Logan M1 2004-2008 90hp/110hp Europe, South America
Dacia Sandero M1 2008-2012 90hp/110hp Europe, South America

Compatible transmissions: 5-speed Manual, 4-speed Automatic

Drive types: FWD

Fuel Economy

Fuel Type Petrol 95
Octane Rating Minimum: 95 | Recommended: 95
Consumption (City) 9 L/100km
Consumption (Highway) 6 L/100km
Consumption (Combined) 7.5 L/100km
Real Consumption 8 L/100km
Fuel Tank Capacity 50 L
Range 666 km
Cost per 100 km 10-12 USD

Emissions Standards

Emission Standard Euro 3
CO₂ Emissions 180 g/km
Particulate Filter (DPF) Absent
AdBlue Not Required

Comparison with competitors

Engine Brand Displacement Power Torque
K4M Renault 1,598 cc 110 hp 148 Nm
1.6L I4 Ford 1,596 cc 100 hp 140 Nm

Pros

  • Good fuel economy for its class
  • Easy to maintain
  • Widely available parts

Cons

  • Less power compared to newer engines
  • Timing belt replacement can be costly