Lancia Fulvia HF v0.12

The Lancia Fulvia (Tipo 818) is an automobile produced by Lancia between 1963 and 1976. Named after Via Fulvia, the Roman road leading from Tortona to Torino, it was introduced at the Geneva Motor Show in 1963 and manufactured in three variants: Berlina 4-door saloon, 2-door Coupé, and Sport, an alternative fastback coupé designed and built by Zagato on the Coupé floorpan.

Fulvias are notable for their role in motorsport history, including winning the International Rally Championship in 1972. On testing a Fulvia in 1967, Road & Track summed it up as “a precision motorcar, an engineering tour de force”.

One element that was new was the narrow-angle V4 engine. Designed by Zaccone Mina, it used a narrow angle (12°53’28”) and was mounted well forward at a 45° angle. The engine is a DOHC design with a one camshaft operating all intake valves and another operating all exhaust valves. The very narrow angle of the cylinders allowed for use of a single cylinder head.

Displacement began at just 1091 cc with 58 bhp (44 kW) with a 72 mm bore and 67 mm stroke. A higher (9.0:1) compression ratio and the fitment of twin Solex carburettors raised power to 71 bhp (53 kW) soon after.

The engine was bored to 6 mm to enlarge displacement to 1216 cc for the HF model. This, and some tuning, raised output to 80 to 88 bhp (60 to 66 kW).

The engine was re-engineered with a slightly narrower bank angle (12°45’28”) and longer (69.7 mm) stroke for 1967. Three displacements were produced: 1199 cc (74 mm bore), 1231 cc (75 mm bore), and 1298 cc (77 mm bore). The new 1298 cc engine was produced in two versions; the type 818.302 produced 87 bhp (65 kW) at 6000 rpm and was fitted to 1st series Coupés, Sports and Berlina GTE and later to the 2nd Series Berlina. The Type 818.303 was first produced with 92 hp (69 kW) and was fitted to the 1st series Coupé Rallye S and Sport S. For the 2nd Series Coupé and Sport power was slightly reduced to 90 hp (67 kW) at 6000 rpm. The 1199 cc engine was only fitted to the Berlina sold in Greece.

The engine was completely reworked for the new 1.6 HF with an even-narrower angle (11°20′ now) and longer 75 mm stroke combined with a bore of 82 mm gave it a displacement of 1584 cc, and power ranged from 115 to 132 bhp (85 to 98 kW) depending on tune.