Biturbo Engines
The Maserati Biturbo was the first ever production twin-turbocharged engine. The 2-litre version featured wet aluminium sleeves coated with Nikasil. The last street version featured over 150 hp/litre and 140 ft·lbf (190 N·m)/litre torque.
A V6 1996 cc DOHC 36-valve (6 valves per cylinder) engine was developed but never manufactured.
| Série | Displacement | Head | Fuel system | Model |
|---|---|---|---|---|
| AM 452 | 2000 cc | 18 valves | carburetor | Biturbo, Biturbo S |
| AM 453 | 2500 cc | 18 valves | carburetor | Biturbo 2500 |
| AM 470 | 2000 cc | 18 valves | injection | Biturbo i |
| AM 471 | 2000 cc | 18 valves | injection | Si, 2.22S, 2.22SR, 4.18, 4.30, Spyder |
| AM 472 | 2500 cc | 18 valves | injection | Biturbo 2500i |
| AM 473 | 2800 cc | 18 valves | injection | 4.30, 222SR, Spyder, Karif |
| AM 475 | 2000 cc | 24 valves | injection | 2.24, 4.24, Spyder |
| AM 490 | 2000 cc | 24 valves | injection | Racing, Barchetta Stradale |
| AM 495 | 2000 cc | 24 valves | injection | Ghibli II |
| AM 496 | 2000 cc | 24 valves | injection | Ghibli Cup |
| AM 477 | 2800 cc | 24 valves | injection | 2.22 4V, 430 4V, Ghibli II |
| AM 501 | 2000 cc | 24 valves | injection | Barchetta Corsa |
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