BMW S5x 11.5:1 Specs
BMW S5x · 3.425" × 3.583" · 11.5:1 engine specs: 195.2 ci (3.2L), 6-cylinder, 3.4252" bore x 3.5827" stroke, 11.5:1 compression.
Dimensions
| Displacement | 195.2 ci / 3.2 L |
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| Bore | 3.4252" |
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| Stroke | 3.5827" |
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| Cylinders | 6 |
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| Compression ratio | 11.5:1 |
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| Bore/stroke ratio | 0.956 |
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Construction
| Block material | cast iron |
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| Head material | aluminum |
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| Valvetrain | DOHC |
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| Fuel type | gas |
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| Advertised HP | 333–360 hp |
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What these numbers mean
| Bore/stroke character | 0.956 — square — bore and stroke are within 5%, a balanced compromise |
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| Mean piston speed at 6,000 RPM | 3,583 ft/min — in the range typical of performance street engines |
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| Displacement per cylinder | 32.5 ci |
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| Static compression | 11.5:1 — high enough that pump premium or better is normally required |
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Variants sharing these dimensions (3)
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
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| — | 333 hp | S54B32 |
| — | 343 hp | S54B32 |
| — | 360 hp | S54B32HP |
Vehicles (7)
- BMW E46 M3 (US-spec)
- BMW Z3 M Roadster/Coupe (US-spec)
- BMW Z4 M Roadster/Coupe (US-spec)
- BMW E46 M3 (Euro-spec)
- BMW Z3 M Roadster/Coupe (Euro-spec)
- BMW Z4 M Roadster/Coupe (Euro-spec)
- BMW E46 M3 CSL
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