Mazda 13B 9:1 Specs
Mazda 13B · 3.150" × 3.150" · 9:1 engine specs: 80 ci (1.3L), 2-cylinder, 3.1496" bore x 3.1496" stroke, 9:1 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 | 9:1 |
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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 | 200–280 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 | 9:1 — low by modern standards, generally happy on regular pump fuel |
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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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| — | 200 hp | 13B-T (FC Series 5), 13B-REW, 13B-T (Series 5) |
| — | 265 hp | 13B-REW (Series 7) |
| — | 280 hp | 13B-REW (Series 8) |
Vehicles (6)
- Mazda RX-7 (FD3S Series 7)
- Mazda RX-7 (FD3S Series 8)
- Mazda RX-7 Turbo II (FC3S Series 5)
- Mazda RX-7 (FC3S)
- Mazda RX-7 (FD3S)
- Mazda RX-7 Turbo II (FC)
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