The company assembled the 3.0-liter 24-valve Volvo B6304S engine between 1990 and 1999. It was fitted to the popular 960 model in Europe, as well as the comparable S90 sedan and V90 station wagon. This motor’s catalyst-equipped modifications were identified by the indices B6304F and B6304FS.
The B6284T, B6294S, and B6294T are members of the 6-cylinder modular engine family.
The engine was mounted on:
- Volvo 960 in 1990 – 1996;
- Volvo S80 I (184) in 1998 – 1999;
- Volvo S90 I (964) in 1996 – 1998;
- Volvo V90 I (235) in 1996 – 1998.
Specifications
| Production years | 1990-1999 |
| Displacement, cc | 2922 |
| Fuel system | injector |
| Power output, hp | 204 |
| Torque output, Nm | 267 |
| Cylinder block | aluminum R6 |
| Block head | aluminum 24v |
| Cylinder bore, mm | 83 |
| Piston stroke, mm | 90 |
| Compression ratio | 10.7 |
| Features | DOHC |
| Hydraulic lifters | yes |
| Timing drive | belt |
| Phase regulator | no |
| Turbocharging | no |
| Recommended engine oil | 5W-40 |
| Engine oil capacity, liter | 5.8 |
| Fuel type | petrol |
| Euro standards | EURO 2 |
| Fuel consumption, L/100 km (for Volvo 960 1994) — city — highway — combined |
16.5 8.4 11.1 |
| Engine lifespan, km | ~350 000 |
Disadvantages of the B6304S engine
This unit is dependable because it lacks an electronic choke and a phase regulator.
The most frequent topic of discussion in specialized forums is oil consumption resulting from clogged crankcase ventilation;
Additionally, lubricant leaks frequently happen in this area, particularly from the rear crankshaft oil seal;
Keep a close eye on the timing belt’s condition because if it breaks, the valves will bend; the fuel pump, water pump, and engine mounts are all characterized by a low resource.