BMW M73 V12 engine
From 1993 to 2002
The BMW M73 is a 60° V12 SOHC piston engine which replaced the M70 and was produced from 1993-2002.
Design
Compared with its M70 predecessor, the M73 features increased displacement thanks to increased bore (85mm up from 84mm) and stroke (79mm up from 75mm), and an updated roller-rocker valve-train.While most other engines in the BMW range had switched to DOHC and 4 valves per cylinder, the M73 used SOHC and 2 valves per cylinder.
Some versions of the engine have two separate Bosch Motronic ECUs, while others use a single Siemens ECU.
Models
| Engine | Displacement | Power | Torque | Redline | Year |
|---|---|---|---|---|---|
| M73B54 | 5,379 cc (328 cu in) | 240 kW (320 hp) @ 5000 | 490 N·m (360 lb·ft) @ 3900 | 6000 | 1994 |
| M73TUB54 | 1998 |
M73B54
1994-1998 BMW 7 Series E38 750i/750iL/L7 engine specs.
| Engine Size | 5379cc |
|---|---|
| Cylinders | 12 |
| Valves | 24 |
| Fuel Type | Petrol |
| Power | 326 bhp |
|---|---|
| Top Speed | 155 mph |
| 0-60 mph | 6.6 secs |
| Torque | 490 Nm |
| CO2 Emissions | 333 g/km |
| Euro Emissions Standard | 3 |
| Miles Per Tank | 396 miles |
Applications:
- 1994-1998 E38 750i/750iL/L7
- 1994-1999 E31 850Ci
M73TUB54
1999-2002 Rolls-Royce Silver Seraph Engine specification.
| Engine Size | 5379cc |
|---|---|
| Cylinders | 12 |
| Valves | 24 |
| Fuel Type | Petrol |
| Power | 322 bhp |
|---|---|
| Top Speed | 140 mph |
| 0-60 mph | 7.1 secs |
| Torque | 490 Nm, 361 ft-lb |
| CO2 Emissions | 405 g/km |
| Euro Emissions Standard | 3 |
| Miles Per Tank | 352 miles |
The M73TU won the "Above 4 L" category of the International Engine of the Year awards for 1999.
Applications:
- 1998-2001 E38 750i/750iL/L7
- 1999-2002 Rolls-Royce Silver Seraph
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