The 2.2-liter Renault G8T diesel engine was assembled at the company’s plant from 1993 to 2002 and was installed on the largest concern models of its time, such as Laguna, Safrane and Espace. There was an atmospheric modification of this diesel engine with 83 hp and a turbocharged 113 hp.
The G-series diesel line also includes: G9T and G9U.
In 1993, an atmospheric 2.2-liter diesel debuted on the first generation Renault Laguna. It stood out with an unusual cylinder head with one camshaft for 12 valves and hydraulic lifters. Otherwise, this is an ordinary pre-chamber diesel engine with a cast-iron block and a timing belt drive.
In 1996, a turbocharged version appeared, thanks to which the power was raised from 83 to 113 hp. The supercharged modification of the diesel engine, in addition to the Laguna, was installed on the Safrane liftback and the Espace minivan.
The engine was installed on:
- Renault Avantime 1 (D66) in 2001 – 2002;
- Renault Espace 3 (J66) in 1996 – 2000;
- Renault Laguna 1 (X56) in 1993 – 2000;
- Renault Safrane 1 (B54) in 1996 – 2000.
Specifications
| Production years | 1993-2002 |
| Displacement, cc | 2188 |
| Fuel system | prechambers |
| Power output, hp | 83 (atmospheric) 113 (turbocharged) |
| Torque output, Nm | 142 (atmospheric) 234 – 250 (turbocharged) |
| Cylinder block | cast iron R4 |
| Block head | aluminum 12v |
| Cylinder bore, mm | 87 |
| Piston stroke, mm | 92 |
| Compression ratio | 23.0 (atmospheric) 22.0 (turbocharged) |
| Hydraulic lifters | yes |
| Timing drive | belt |
| Recommended engine oil | 5W-40, 10W-40 |
| Engine oil capacity, liter | 7.5 |
| Fuel type | diesel |
| Euro standards | EURO 1/2 |
| Fuel consumption, L/100 km (for Renault Laguna 1999) — city — highway — combined |
9.8 5.6 7.1 |
| Engine lifespan, km | ~500 000 |
| Weight, kg | 218 |
Disadvantages of the Renault G8T engine
- This diesel engine is afraid of overheating, its head is often deformed and even cracked, which is usually indicated by the appearance of air bubbles in the expansion tank. So watch your cooling system.
- Saving on lubrication in this engine often leads to wear on the camshaft cams. In the most neglected case, this turns into a belt jump and breakage of the rockers. Also, from cheap oil, hydraulic lifters start knocking quite quickly here.
- Even in this diesel engine, lubricant leaks regularly occur from under the oil cooler rings, numerous air pipes constantly crack, and sometimes the fuel line.
