The Jaguar AJ33 4.2-litre V8 petrol engine was built by Jaguar from 2002 to 2009 and was used in models such as the XK8 and XJ8, as well as the S-Type, but there it was most often called the AJ36. In addition to the 4.2-liter engine, a 3.5-liter power unit was offered under this index.
AJ-V8 series: AJ126, AJ27, AJ27S, AJ28, AJ33, AJ33S, AJ34, AJ34S, AJ133, AJ133S.
Specifications
| Production years | 2002-2009 |
| Displacement, cc | 3555 4196 |
| Fuel system | distributed injection |
| Power output, hp | 258 (3.5 liters) 298 (4.2 liters) |
| Torque output, Nm | 335 – 355 (3.5 liters) 411 (4.2 liters) |
| Cylinder block | aluminum V8 |
| Block head | aluminum 32v |
| Cylinder bore, mm | 86 |
| Piston stroke, mm | 76.5 (3.5 liters) 90.3 (4.2 liters) |
| Compression ratio | 11.0 |
| Features | DOHC |
| Hydraulic lifters | no |
| Timing drive | chain |
| Phase regulator | yes |
| Turbocharging | no |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 6.0 |
| Fuel type | petrol |
| Euro standards | EURO 3 |
| Fuel consumption, L/100 km (for Jaguar XJ 2003) — city — highway — combined |
16.0 8.1 10.9 |
| Engine lifespan, km | ~450 000 |
The engine was installed on:
- Jaguar S-Type 1 (X200) in 2002 – 2004;
- Jaguar XJ 7 (X350) in 2003 – 2009;
- Jaguar XK 1 (X100) in 2002 – 2006; XK 2 (X150) in 2007 – 2009.
Disadvantages of the Jaguar AJ33 engine
- In terms of reliability, this unit has no big problems, but fuel consumption is high;
- Also, there are no problematic phase regulators of the VVT type;
- The aluminum motor is afraid of overheating, monitor the condition of the radiator and pump;
- Search for the cause of unstable engine operation, start by uploading a fresh ECU firmware;
- The rest of the problems are related to sensor glitches and leaks of lubricant or antifreeze.
