Ford Zephyr engine

Ford's revolutionary United Kingdom Zephyr/Consul cars used a new family of engines. The so-called Zephyr engine included both straight-4 and straight-6 OHV engines. Production began in 1951 and lasted through to 1966, when it was replaced by Ford's Essex V4 and Essex V6 engines.

Ford Zephyr engine
Overview
ManufacturerFord Motor Company
Production1951-1966
Layout
ConfigurationStraight-4 and Straight-6
Displacement1.5–2.6 L; 91.8–155.8 cu in (1,505–2,553 cc)
Cylinder bore79.3 mm (3.12 in)
82.5 mm (3.25 in)
Piston stroke76.2 mm (3.00 in)
79.5 mm (3.13 in)
ValvetrainOHV
Combustion
Fuel typePetrol
Cooling systemWater-cooled
Output
Power output47–71 bhp (35–53 kW)
Chronology
SuccessorEssex V4, Essex V6

Consul/Zephyr 4

The straight-4 engine started in 1951 at 1.5 L; 91.8 cu in (1,505 cc). In this form it had a bore and stroke of 79.3 mm × 76.2 mm (3.12 in × 3.00 in). With its standard compression ratio of 6.8:1 it produced an output of 47 bhp (35 kW) at 4400 rpm. It was enlarged in 1956 to 1.7 L (100 cu in) engine for the Mark II Consul by increasing both the bore and stroke to 82.5 mm × 79.5 mm (3.25 in × 3.13 in), putting the power up to 59 bhp (44 kW). This engine continued in the Mark III car, now called Zephyr.

Automobiles using the Consul engine:

Zephyr 6

The straight-6 Zephyr engine was used widely. Displacement began at 2.3 L; 137.8 cu in (2,258 cc) when it shared the same bore and stroke as the 1.5 L; 91.8 cu in (1,505 cc) 4-cylinder engine. It was produced with two standard compression ratios of 6.8:1 and 7.5:1 with outputs of 68 and 71 bhp (51 and 53 kW). It grew to 2.6 L; 155.8 cu in (2,553 cc) in the 1956 Mark II.

See also

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