BMW S38
The BMW S38 is a straight-6 DOHC petrol engine which replaced the M88 and was produced from 1984–1995. The S38 was originally produced for North America as an equivalent to the M88 with slightly lower power output. In 1989, power output of the S38 was increased and it became the worldwide replacement for the M88.
| BMW S38 engine | |
|---|---|
S38B36 | |
| Overview | |
| Production | 1984–1995 |
| Layout | |
| Configuration | Straight-6 |
| Displacement | 3.5 L (3,453 cc) 3.5 L (3,535 cc) 3.8 L (3,795 cc) |
| Cylinder bore | 93.4 mm (3.68 in) 94.6 mm (3.72 in) |
| Piston stroke | 84 mm (3.31 in) 86 mm (3.39 in) 90 mm (3.54 in) |
| Cylinder block material | Cast iron |
| Cylinder head material | Aluminium |
| Valvetrain | DOHC |
| Combustion | |
| Fuel type | Petrol |
| Chronology | |
| Predecessor | BMW M88 |
| Successor | None |
In 1998, the BMW M5 switched to the S62 V8 engine. There is therefore no direct successor to the S38, however the BMW S50 engine took over as BMW's high performance straight-6 engine.
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