The 2.8-liter 30-valve Audi ACK 2.8 V6 engine was assembled by the concern from 1995 to 1998 and was installed on such popular models as the A4 in the back of the B5, and also the A6 in the back of the C4 or C5. This motor has many analogues with minor differences, such as APR, AMX, AQD and ALG.
EA835 family: ABC, AAH, ALF, BDV, ARE, ACK, ALG, BBJ, ASN.
Specifications
| Production years | 1995-1998 |
| Displacement, cc | 2771 |
| Fuel system | injector |
| Power output, hp | 193 |
| Torque output, Nm | 280 |
| Cylinder block | cast iron V6 |
| Block head | aluminum 30v |
| Cylinder bore, mm | 82.5 |
| Piston stroke, mm | 86.4 |
| Compression ratio | 10.6 |
| Features | 2 x DOHC |
| Hydraulic lifters | yes |
| Timing drive | 2 chains & belt |
| Phase regulator | hydraulic chain tensioner |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 5.5 |
| Fuel type | petrol |
| Euro standards | EURO 2 |
| Fuel consumption, L/100 km (for Audi A6 1996) — city — highway — combined |
12.8 7.9 10.3 |
| Engine lifespan, km | ~330 000 |
| Weight, kg | 184 |
The engine was installed on:
- Audi A4 B5 (8D) in 1996 – 1998;
- Audi A6 C4 (4A) in 1995 – 1997, A6 C5 (4B) in 1997 – 1998;
- Audi A8 D2 (4D) in 1996 – 1998;
- Volkswagen Passat B5 (3B) in 1996 – 1998.
Disadvantages of the Audi ACK engine
- This power unit is prone to oil and antifreeze leaks, especially after overheating;
- Hydraulic lifters and chain tensioners do not tolerate bad lubricants;
- Monitor the condition of the timing belt, if it breaks, the valves bend here in 100% of cases;
- Many problems are caused by frequent contamination of the idle valve, throttle and crankcase ventilation;
- At high mileage, the electrician begins to feverish: sensors, coils, lambda probe.
Frequently asked questions about the Audi ACK
How much power does the Audi ACK make?
The Audi ACK develops 193 hp and 280 Nm of torque.
How much oil does the Audi ACK take and which one?
Engine oil capacity: 5.5 liters. Recommended oil: 5W-30.
Does the Audi ACK have a timing belt or chain?
Timing drive of the Audi ACK: 2 chains & belt.
Is the Audi ACK turbocharged?
No, the Audi ACK is naturally aspirated.
Does the Audi ACK need valve clearance adjustment?
No, the Audi ACK has hydraulic lifters, so the valve clearances do not need to be adjusted.
How long does the Audi ACK last?
The typical lifespan of the Audi ACK is ~330 000 km with proper maintenance.
What is the fuel consumption of the Audi ACK?
Audi A6 1996: city 12.8, highway 7.9, combined 10.3 L/100 km.
What cars was the Audi ACK installed on?
Audi A4 B5 (8D) in 1996 - 1998; Audi A6 C4 (4A) in 1995 - 1997, A6 C5 (4B) in 1997 - 1998; Audi A8 D2 (4D) in 1996 - 1998; Volkswagen Passat B5 (3B) in 1996 - 1998.
What are the common problems of the Audi ACK?
This power unit is prone to oil and antifreeze leaks, especially after overheating. Hydraulic lifters and chain tensioners do not tolerate bad lubricants. All known problems.
