Mazda BP-ZET Specs
Mazda BP-ZET engine specs: 112.2 ci (1.839L), 4-cylinder, 3.2677" bore x 3.3465" stroke, 8.4:1 compression.
Dimensions
| Displacement | 112.2 ci / 1.839 L |
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| Bore | 3.2677" |
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| Stroke | 3.3465" |
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| Cylinders | 4 |
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| Compression ratio | 8.4:1 |
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| Bore/stroke ratio | 0.976 |
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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 | 178 hp |
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What these numbers mean
| Bore/stroke character | 0.976 — square — bore and stroke are within 5%, a balanced compromise |
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| Mean piston speed at 6,000 RPM | 3,347 ft/min — conservative for a street engine |
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| Displacement per cylinder | 28.1 ci |
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| Static compression | 8.4:1 — low by modern standards, generally happy on regular pump fuel |
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Vehicles (2)
- Mazda MX-5 Miata (NB Mazdaspeed)
- Mazda MX-5 Miata Mazdaspeed (NB)
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