Fiat Twin Cam engine
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Designed by Aurelio Lampredi the Fiat Twin Cam was an advanced straight-4 automobile engine produced from 1959 through 1994 as a Fiat/Lancia engine and from 1995 onwards with a redesigned cylinder-head as an Alfa Romeo Twin Spark engine (replacing the original Alfa Romeo Twin-Cam in all front-wheel drive Alfa Romeos).[1] As the name implies, it was a DOHC design, which was quite unusual in the late 1950s. A few non-DOHC variants were also produced. The engine was produced in a large number of displacements, ranging from 1297 cc to 1995 cc and was used in Fiat, Lancia and Alfa Romeo automobiles. It was one of the first mass produced engines to use belt driven camshafts.
Contents |
[edit] Applications
- 1966-1985 Fiat 124 Spider/Coupe
- 1967-1972 Fiat 125
- 1972-1984 Fiat 132/Argenta
- 1972-1984 Lancia Beta Saloon/Coupe/Spider/HPE
- 1974-1984 Fiat 131/Mirafiori
- 1975-1984 Lancia Monte Carlo
- 1978-1988 Fiat Ritmo/Strada
- 1980-1994 Lancia Delta/HF/Integrale
- 1981-1984 Lancia Trevi
- 1984-1990 Fiat Regata
- 1985-1990 Fiat Weekend
- 1985-1992 Lancia Thema
- 1992-1998 Alfa Romeo 155
- 1989-2000 Lancia Dedra
- 1994-2000 Fiat Coupé
[edit] Displacements
| Displacement (cc) |
Bore (mm) |
Stroke (mm) |
|
|---|---|---|---|
| 1297 | 76 | 72 | Lancia Beta |
| 1301 | |||
| 1367 | |||
| 1438 | 80 | 72 | Fiat124ST/Coupe/Spider |
| 1491 | 78 | 78 | |
| 1491 | 78 | 78 | |
| 1585 | 84 | 71.5 | |
| 1592 | 80 | 79.2 | Fiat 124ST/Coupe Lancia Beta |
| 1598 | |||
| 1608 | 80 | 80 | Fiat 125 |
| 1756 | 84 | 79.2 | Fiat 132 Lancia Beta |
| 1995 | 84 | 90 | Fiat 132/Argenta Lancia Beta |
[edit] Motorsport
The Fiat Twin Cam engine has been widely used in motorsport and has been the most successful engine in the history of the World Rally Championship. The World Rally Championship for Manufacturers has been won by Fiat and Lancia, using engines based on the Lampredi Twin Cam engine, for a total of 10 years.
| Constructor | Car used in Championship | Total | Seasons |
|---|---|---|---|
 Fiat |
Fiat 131 Abarth | 3 | 1977-1978, 1980 |
| Lancia |
Lancia 037 | 1 | 1983 |
| Lancia |
Lancia Delta HF 4WD and Delta Integrale | 6 | 1987-1992 |
[edit] Footnotes
- ^ Excluding the Alfasud (and derived) cars which used an original flat-four Alfa Romeo "boxer" engine
