The Ford Zephyr engine was a line of automotive OHV internal combustion engines that were designed for and unveiled with Ford of Britain's Zephyr/Zodiac and Consul models. The family included both straight-four and straight-six versions. Production began in 1951 and lasted until 1966, when it was replaced by Ford's Essex V4 and Essex V6 engines.

Consul/Zephyr 4

The four cylinder debuted in the Consul as a 1.5-litre engine. Bore and stroke are 79.37x76.2 mm for a total displacement of 1508 cc. With its standard compression ratio of 6.8:1 it produces 47 bhp at 4400 rpm. It was enlarged in 1956 to 1702 cc for the Mark II Consul by increasing both the bore and stroke to 82.55x79.5 mm, raising power to 59 bhp. This engine continued in the Mark III car, which dropped the Consul name and was now called the Zephyr 4.

Applications

Zephyr 6

The six cylinder Zephyr engine was used widely. Displacement was 2262 cc in early versions that had the same bore and stroke as the 1.5-litre 4 cylinder. It was produced with two available compression ratios: 6.8:1 in the Zephyr, with an output of 68 bhp, and 7.5:1 in the top-of-range Zodiac, with an output of 71 bhp. The six cylinder grew to 2553 cc in the 1956 Mark II when its bore and stroke were increased to match the 1.7-litre inline four.

Applications