Chassis no. 672409

Engine no. JC11299

Body no. F4399

3,442-cc, 160-hp DOHC inline six-cylinder engine, four-speed manual transmission, torsion bar independent front suspension, live rear axle with semi-elliptic leaf springs, and four-wheel hydraulic drum brakes. Wheelbase: 102-inches

Jaguar’s XK 120 stole the show at the October 1948 International Motor Exhibition at London’s Earl’s Court. It literally redefined the term “British sports car,” transforming the image from an angular, open-fendered car to a smooth envelope, streamlined and slinky. Customers and the motoring press gave it a warm welcome, validating Jaguar chief William Lyons’ decision to start production the following July.

The modern looks of the XK 120 were matched by the engineering under its skin. A sturdy box-section chassis featured torsion bar independent front suspension, and the live rear axle rode on long semi-elliptic leaf springs. Brakes were Lockheed hydraulic drum units, with twin leading shoes and a generous 12-inch diameter.

Heart and soul of the new car was a 3,442-cc dual-overhead-cam six. It had begun life as a two-liter four-cylinder design. Engineer Harry Weslake had experimented with a number of advanced concepts, of which a four-cylinder unit, with hemispherical combustion chambers and large main bearings, was the most promising. Lyons then directed him to add two more cylinders. Low-end torque was a bit disappointing, so the stroke was lengthened, resulting in the 3.4-liter final displacement. Twin SU H6 carburetors enabled 160-hp at 5,200-rpm.

A concours-quality restoration, this lithe XK 120 Roadster has been driven test miles only since completion. Black with tan leather interior, it has matching tan dashboard and carpet. The engine is brilliant, with much polished aluminum, the undercarriage black and exceptionally clean. Chrome wire wheels with knock-off hubs sport Firestone Deluxe Champion whitewall tires, giving a welcome visual accent to the black profile of the body. Accessories include an adjustable steering column and driving lights.

A first-place winner with 99 points in Jaguar Club of North America competition, this XK 120 remains a stunningly fresh restoration. It is without doubt destined for further honors at every concours it attends.