The 3.1-liter 5-cylinder Jeep EXA diesel engine was produced from 1999 to 2001 and was installed only on the popular Grand Cherokee WJ SUV before restyling. Such a diesel engine was developed by the Italian company VM Motori and is also known as 531 OHV.
The VM Motori series includes: ENC, ENJ, ENS, ENR, EXF, EXJ, EXN, EXA.
Specifications
| Production years | 1999-2001 |
| Displacement, cc | 3125 |
| Fuel system | prechamber |
| Power output, hp | 140 |
| Torque output, Nm | 385 |
| Cylinder block | cast iron R5 |
| Block head | aluminum 10v |
| Cylinder bore, mm | 92 |
| Piston stroke, mm | 94 |
| Compression ratio | 21 |
| Features | OHV |
| Hydraulic lifters | yes |
| Timing drive | gears |
| Phase regulator | no |
| Turbocharging | MHI TF035 |
| Recommended engine oil | 5W-30 |
| Engine oil capacity, liter | 7.8 |
| Fuel type | diesel |
| Euro standards | EURO 1 |
| Fuel consumption, L/100 km (for Jeep Grand Cherokee 2000) — city — highway — combined |
14.5 8.7 10.8 |
| Engine lifespan, km | ~300 000 |
The engine was installed on:
- Jeep Grand Cherokee 2 (WJ) in 1999 – 2001.
Disadvantages of the EXA engine
- Firstly, this is a rather rare diesel engine, it was installed on the Grand Cherokee for three years and that’s it;
- Secondly, here each cylinder has a separate head and they often crack;
- And thirdly, these heads need to be stretched periodically or oil leaks will appear;
- The turbine is distinguished by a low resource, often it drives oil already to 100,000 km;
- Also, many owners complain about loud noise, vibration.
