Volkswagen BDN engine
Engines

Volkswagen BDN engine

Technical characteristics of the 4.0-liter gasoline engine Volkswagen BDN or Passat W8 4.0, reliability, resource, reviews, problems and fuel consumption.

The 4.0-liter Volkswagen BDN or Passat W8 4.0 engine was produced from 2001 to 2004 and was installed only on the maximum version of the restyled Passat B5 4.0 W8 4motion. On this model, there is another modification of this power unit under the BDP index.

The EA398 series also includes internal combustion engines: BHT, BRN and CEJA.

Technical characteristics of the Volkswagen W8 BDN 4.0 liter engine

Exact volume3999 cm³
Supply systemdistribution injection
Internal combustion engine power275 hp
Torque370 Nm
Cylinder blockaluminum W8
Block headaluminum 32v
Bore84 mm
Piston stroke90.2 mm
Compression ratio10.8
Features of the internal combustion engineno
Hydraulic compensatorsYes
Timing drivechain
Phase regulatorinlet and outlet
Turbochargingno
What kind of oil to pour8.3 liters 5W-30
fuel typeAI-95
Environmental classEURO 4
Approximate resource240 000 km

Fuel consumption internal combustion engine Volkswagen BDN

On the example of a 4.0 Volkswagen Passat 8 W2002 with an automatic transmission:

City19.4 liters
Track9.5 liters
Mixed12.9 liters

Which cars were equipped with the BDN 4.0 l engine

Volkswagen
Passat B5 (3B)2001 – 2004
  

Disadvantages, breakdowns and problems of the BDN internal combustion engine

You need to carefully monitor the cooling system, as the motor is afraid of overheating

Due to frequent overheating and cheap oil, scoring quickly forms in the cylinders.

In the lifted cylinders, oil waste begins, which is fraught with the rotation of the liners

About 200 km of run require the attention of the timing chain and you will have to remove the unit

The weak points of the internal combustion engine also include ignition coils, a pump, wiring between the computer


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