Mazda 13B Rotary Turbo Series4 Specs
Mazda 13B Rotary Turbo Series4 engine specs: 79.8 ci (1.308L), 2-cylinder, 4.1339" bore x 3.1496" stroke, 8.5:1 compression.
Dimensions
| Displacement | 79.8 ci / 1.308 L |
|---|
| Bore | 4.1339" |
|---|
| Stroke | 3.1496" |
|---|
| Cylinders | 2 |
|---|
| Compression ratio | 8.5:1 |
|---|
| Bore/stroke ratio | 1.313 |
|---|
Construction
| Block material | aluminum |
|---|
| Head material | aluminum |
|---|
| Valvetrain | Rotary |
|---|
| Fuel type | gas |
|---|
| Advertised HP | 182 hp |
|---|
What these numbers mean
| Bore/stroke character | 1.313 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves |
|---|
| Mean piston speed at 6,000 RPM | 3,150 ft/min — conservative for a street engine |
|---|
| Displacement per cylinder | 39.9 ci |
|---|
| Static compression | 8.5:1 — low by modern standards, generally happy on regular pump fuel |
|---|
Run the numbers for this engine
Each link opens the calculator with this engine's specs already filled in.
Vehicles (1)
- Mazda RX-7 Turbo II (FC3S)
Similar engines
← All Rotary engines