EA824 or Audi V8 engines
Audi EA824 8-cylinder engine line debuted in 1988 with the Audi V8 and has since grown into an impressive family of nearly a hundred different models. This series is divided into three generations: conventional injection MPI, direct FSI, turbocharged TFSI.
1st generation Audi V8 engines
In 1988, the group's first 3.6-liter 8-cylinder engine debuted on the Audi V8 model. This is a V-shaped engine with distributed fuel injection, an aluminum cylinder block, two 16-valve cylinder heads with hydraulic lifters and a very interesting timing drive: there is one, but a very long belt and a pair of short chains between the camshafts. In 1992, a 4.2-liter unit appeared, and in 1995, a 3.7-liter engine instead of 3.6 liters.
In the first line there were 10 engines, which essentially differed only in displacement:
3.7 V8 32v (3697 cc, 84.5 x 82.4 mm), injector:
- PT (distributed injection, 250 hp / 340 Nm) for Audi V8 D1 (4C);
- AEW (230 hp / 315 Nm) for Audi A8 D2 (4D);
- AKJ (distributed injection, 230 hp / 315 Nm) for Audi A8 D2 (4D);
- ABH (distributed injection, 280 hp / 400 Nm) for Audi V8 D1 (4C), S4 C4 (4A);
- AEC (distributed injection, 290 hp / 400 Nm) for Audi S6 C4 (4A);
- AHK (distributed injection, 326 hp / 400 Nm) for Audi S6 C4 (4A);
- AEM (distributed injection, 245 hp / 400 Nm) for Audi A8 D2 (4D);
- AGH (distributed injection, 285 hp / 400 Nm) for Audi A8 D2 (4D);
- ABZ (300 hp / 400 Nm) for Audi A8 D2 (4D);
- AKG (distributed injection, 300 hp / 400 Nm) for Audi A8 D2 (4D);
- AHC (distributed injection, 340 hp / 410 Nm) for Audi S8 D2 (4D);
- AKH (distributed injection, 340 hp / 410 Nm) for Audi S8 D2 (4D);
In 1998, an updated version of the V-shaped 8-cylinder engine debuted on the Audi A8. There were many differences, but the main ones were the new block heads with 5 valves per cylinder and hydraulic chain tensioners, which acted as a variable valve timing system. Also in the series there were modifications with twin turbocharging for the RS6 and RS6 Plus models.
In the second line of the EA824 family, there were more than three dozen different power units:
3.7-4.2 V8 40v (3697 cc, 84.5 x 82.4 mm), injector:
- AKC (distributed injection, 260 hp / 350 Nm) for Audi A8 D2 (4D);
- AQG (distributed injection, 260 hp / 350 Nm) for Audi A8 D2 (4D);
- BFL (280 hp / 350 Nm) for Audi A8 D3 (4E);
- BBK (distributed injection, 344 hp / 410 Nm) for Audi S4 B6 (8E), S4 B7 (8E);
- BHF (distributed injection, 344 hp / 410 Nm) for Audi S4 B7 (8E);
- ARS (distributed injection, 300 hp / 400 Nm) for Audi A6 C5 (4B);
- ART (distributed injection, 300 hp / 400 Nm) for Audi A6 C5 (4B);
- ASG (distributed injection, 300 hp / 400 Nm) for Audi A6 C5 (4B);
- AWN (distributed injection, 300 hp / 400 Nm) for Audi A6 C5 (4B);
- BAS (distributed injection, 300 hp / 400 Nm) for Audi A6 C5 Allroad (4B);
- ANK (distributed injection, 340 hp / 420 Nm) for Audi S6 C5 (4B);
- AQJ (distributed injection, 340 hp / 420 Nm) for Audi S6 C5 (4B);
- BBD (distributed injection, 340 hp / 420 Nm) for Audi S6 C5 (4B);
- BAT (distributed injection, 335 hp / 420 Nm) for Audi A6 C6 (4F);
- BNK (distributed injection, 335 hp / 420 Nm) for Audi A6 C6 (4F);
- AUX (distributed injection, 310 hp / 410 Nm) for Audi A8 D2 (4D);
- AKB (distributed injection, 310 hp / 410 Nm) for Audi A8 D2 (4D);
- AQF (distributed injection, 310 hp / 410 Nm) for Audi A8 D2 (4D);
- AUW (distributed injection, 310 hp / 410 Nm) for Audi A8 D2 (4D);
- AQH (distributed injection, 360 hp / 430 Nm) for Audi S8 D2 (4D);
- AVP (distributed injection, 360 hp / 430 Nm) for Audi S8 D2 (4D);
- AYS (distributed injection, 360 hp / 430 Nm) for Audi S8 D2 (4D);
- BCS (distributed injection, 360 hp / 430 Nm) for Audi S8 D2 (4D);
- BGK (distributed injection, 335 hp / 430 Nm) for Audi A8 D3 (4E);
- BFM (335 hp / 430 Nm) for Audi A8 D3 (4E);
- AXQ (310 hp / 410 Nm) for VW Touareg 1 (7L);
- BGH (distributed injection, 335 hp / 430 Nm) for VW Phaeton 1 (3D);
- BGJ (distributed injection, 335 hp / 430 Nm) for VW Phaeton 1 (3D);
- BCY (distributed injection, 450 hp / 560 Nm) for Audi RS6 C5 (4B);
- BRV (distributed injection, 480 hp / 560 Nm) for Audi RS6 C5 (4B);
2nd generation Audi V8 FSI engines
In 2005, the second generation of the V8 engine appeared, equipped with direct fuel injection. It already has a slightly different aluminum block with alusil coating on the cylinder walls, a pair of aluminum DOHC cylinder heads with hydraulic compensators, a complex timing drive of four chains and a conventional VVT type variable valve timing system on all four camshafts. Also based on the 8-cylinder engine, a similar 10-cylinder unit of 5.2 liters was created.
This line includes V8 engines of 4.2 liters and V10 engines of 5.0 and 5.2 liters:
4.2 FSI V8 32v (4163 cc, 84.5 x 92.8 mm), direct injection:
- BVJ (350 hp / 440 Nm) for Audi A6 C6 (4F), Audi A8 D3 (4E);
- CDRA (372 hp / 445 Nm) for Audi A8 D4 (4H);
- BNS (direct injection, 420 hp / 430 Nm) for Audi RS4 B7 (8E);
- CAUA (direct injection, 354 hp / 440 Nm) for Audi S5 1 (8T);
- CFSA (direct injection, 450 hp / 430 Nm) for Audi RS4 B8 (8K), RS5 1 (8T);
- BAR (350 hp / 440 Nm) for Audi Q7 1 (4L), VW Touareg 1 (7L);
- CGNA (direct injection, 360 hp / 445 Nm) for VW Touareg 2 (7P);
5.0-5.2 FSI V10 40v (5204 cc, 84.5 x 92.8 mm), direct injection:
- BXA (435 hp / 540 Nm) for Audi S6 C6 (4F);
- BSM (450 hp / 540 Nm) for Audi S8 D3 (4E);
- BUH (580 hp / 650 Nm) for Audi RS6 C6 (4F);
- BUJ (525 hp / 530 Nm) for Audi R8 1 (42);
3rd generation Audi V8 TFSI engines
In 2012, a new representative of the concern’s line of 8-cylinder engines was introduced. The main difference from its predecessor was the dual turbocharging system in the camber of the block. The rest is the same, but with a slightly smaller displacement, an aluminum cylinder block with alusil coating instead of liners, a pair of aluminum DOHC cylinder heads with hydraulic compensators, phase regulators on all shafts, an FSI direct injection system and a timing drive of four chains. Thanks to the presence of the AVS system, it is possible to turn off some of the cylinders without load.
At this point, there are ten different motors in the line, but it still continues to grow:
4.0 TFSI V8 32v (3993 cc, 84.5 x 89 mm), direct injection:
- CEUC (420 hp / 550 Nm) for Audi S6 C7 (4G), Audi S7 C7 (4G);
- CTGE (450 hp / 550 Nm) for Audi S6 C7 (4G), Audi S7 C7 (4G);
- CRDB (560 hp / 700 Nm) for Audi RS6 C7 (4G), Audi RS7 C7 (4G);
- CWUB (560 hp / 700 Nm) for Audi RS6 C7 (4G), Audi RS7 C7 (4G);
- CWUC (direct injection, 605 hp / 700 Nm) for Audi RS6 C7 (4G), RS7 C7 (4G);
- CEUA (420 hp / 600 Nm) for Audi A8 D4 (4H);
- CTGA (direct injection, 435 hp / 600 Nm) for Audi A8 D4 (4H);
- CGTA (520 hp / 650 Nm) for Audi S8 D4 (4H);
- CTFA (520 hp / 650 Nm) for Audi S8 D4 (4H);
- DDTA (605 hp / 750 Nm) for Audi S8 D4 (4H).
| Engine | Years | Volume | Power | Fuel | Timing | Oil | Lifespan |
|---|---|---|---|---|---|---|---|
| Audi ABZ | 1994–1998 | 4.2 L | 300 hp | petrol | belt & 2 chains | 7.2 L | ~320 000 km |
| Audi AEW | 1995–1998 | 3.7 L | 230 hp | petrol | belt & 2 chains | 7.5 L | ~310 000 km |
| Audi BAR | 2005–2010 | 4.2 L | 350 hp | petrol | chain | 9.2 L | ~250 000 km |
| Audi BFL | 2002–2006 | 3.7 L | 280 hp | petrol | belt & 2 chains | 7.5 L | ~300 000 km |
| Audi BFM | 2002–2006 | 4.2 L | 335 hp | petrol | belt & 2 chains | 7.5 L | ~300 000 km |
| Audi BSM | 2006–2010 | 5.2 L | 450 hp | petrol | chain | 9.8 L | ~200 000 km |
| Audi BUH | 2008–2010 | 5.0 L | 580 hp | petrol, turbo | chain | 8.0 L | ~200 000 km |
| Audi BUJ | 2008–2010 | 5.2 L | 525 hp | petrol | chain | 9.8 L | ~200 000 km |
| Audi BVJ | 2006–2010 | 4.2 L | 350 hp | petrol | chain | 9.1 L | ~260 000 km |
| Audi BXA | 2006–2010 | 5.2 L | 435 hp | petrol | chain | 9.8 L | ~200 000 km |
| Audi CDRA | 2009–2012 | 4.2 L | 372 hp | petrol | chain | 7.7 L | ~270 000 km |
| Audi CEUA | 2012–2013 | 4.0 L | 420 hp | petrol, turbo | chain | 8.3 L | ~230 000 km |
| Audi CEUC | 2012–2014 | 4.0 L | 420 hp | petrol, turbo | chain | 8.7 L | ~300 000 km |
| Audi CGTA | 2012–2013 | 4.0 L | 520 hp | petrol, turbo | chain | 8.7 L | ~300 000 km |
| Audi CRDB | 2013–2018 | 4.0 L | 560 hp | petrol, turbo | chain | 8.3 L | ~220 000 km |
| Audi CTFA | 2013–2017 | 4.0 L | 520 hp | petrol, turbo | chain | 8.7 L | ~300 000 km |
| Audi CTGE | 2014–2018 | 4.0 L | 450 hp | petrol, turbo | chain | 8.7 L | ~300 000 km |
| Audi CWUB | 2015–2017 | 4.0 L | 560 hp | petrol, turbo | chain | 8.7 L | ~300 000 km |
| Audi DDTA | 2015–2017 | 4.0 L | 605 hp | petrol, turbo | chain | 8.7 L | ~300 000 km |
| Volkswagen AXQ | 2002–2006 | 4.2 L | 310 hp | petrol | belt & 2 chains | 7.5 L | ~280 000 km |
No engines match