Audi BAU engine
Content
The 2.5-liter Audi BAU 2.5 TDI diesel engine was assembled by the company from 2003 to 2005 and belonged to the updated B-series, that is, the timing rockers are equipped with special rollers. This unit was most often found under the hood of such popular models as the A4 B6 and A6 C5.
The EA330 line also includes combustion engines: AFB, AKE, AKN, AYM, BDG and BDH.
Specifications of the Audi BAU 2.5 TDI engine
| Exact volume | 2496 cm³ |
| Supply system | direct injection |
| Internal combustion engine power | 180 hp |
| Torque | 370 Nm |
| Cylinder block | cast iron V6 |
| Block head | aluminum 24v |
| Bore | 78.3 mm |
| Piston stroke | 86.4 mm |
| Compression ratio | 18.5 |
| Features of the internal combustion engine | 2 x DOHC |
| Hydraulic compensators | Yes |
| Timing drive | belt |
| Phase regulator | no |
| Turbocharging | VGT |
| What kind of oil to pour | 6.0 liters 5W-30 |
| fuel type | diesel |
| Environmental class | EURO 3 |
| Approximate resource | 300 000 km |
Fuel consumption Audi 2.5 BAU
Using the example of a 6 Audi A2004 with automatic transmission:
| City | 11.3 liters |
| Track | 6.2 liters |
| Mixed | 8.1 liters |
Which cars were equipped with the BAU 2.5 l engine
| A4 B6 (8E) | 2003 – 2004 |
| A6 C5 (4B) | 2003 – 2005 |
| Passat B5 (3B) | 2003 – 2005 |
Disadvantages, breakdowns and problems of BAU
Most internal combustion engine problems are related to failures of the electronically controlled injection pump VP44
There are many cases on the net when newfangled hollow camshafts burst
Also, this motor is extremely prone to oil leaks, especially from under the valve cover.
At high mileage, the geometry of the turbine or the viscous coupling bearing often wedges
Bad oil quickly damages hydraulic lifters and pressure reducing valves.
