Mazda 13B 9.4:1 Specs
Mazda 13B · 3.150" × 3.150" · 9.4:1 engine specs: 80 ci (1.3L), 2-cylinder, 3.1496" bore x 3.1496" stroke, 9.4:1 compression.
Dimensions
| Displacement | 80 ci / 1.3 L |
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| Bore | 3.1496" |
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| Stroke | 3.1496" |
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| Cylinders | 2 |
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| Compression ratio | 9.4:1 |
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| Bore/stroke ratio | 1 |
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Construction
| Block material | aluminum |
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| Head material | aluminum |
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| Valvetrain | Rotary |
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| Fuel type | gas |
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| Advertised HP | 130–146 hp |
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What these numbers mean
| Bore/stroke character | 1.000 — square — bore and stroke are within 5%, a balanced compromise |
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| Mean piston speed at 6,000 RPM | 3,150 ft/min — conservative for a street engine |
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| Displacement per cylinder | 40.0 ci |
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| Static compression | 9.4:1 — low by modern standards, generally happy on regular pump fuel |
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Variants sharing these dimensions (2)
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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| — | 130 hp | 13B RE-E |
| — | 146 hp | 13B 6PI, 13B-DEI |
Vehicles (3)
- Mazda RX-7 (SA22C/FB)
- Mazda RX-7 GSL-SE (FB)
- RX-7 FC
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