E-type 3.8

Jaguar unveiled the E-type in 1961 with styling and engineering that drew visibly on the company’s racing experience while creating a practical production sports car. The 3.8-litre launch specification combined a monocoque centre section, tubular front structure, independent rear suspension and disc brakes.

The 3,781 cc XK inline-six used twin overhead camshafts and three SU carburettors. Jaguar’s famous 265 bhp figure was a period SAE gross claim, converted here to 198 kW and 269 PS, with 260 lb-ft represented as 353 Nm. Those figures must not be confused with later net standards or treated as chassis-dynamometer results. A four-speed Moss gearbox, noted for an unsynchronised first gear, drove the rear wheels.

Roadster and coupe recordings will differ even when engine and exhaust specification match. The open car exposes intake, exhaust and wind more directly, while the coupe adds cabin resonance and structural paths. Submissions should identify body style, hood or window state, air-cleaner configuration and exhaust system. Restoration choices can substantially alter carburettor induction and silencing, so appearance alone cannot prove the launch sound.

Claims that every customer E-type achieved 150 mph are inappropriate. The number belongs to specific test conditions and highly prepared early examples, not a universal production guarantee. Production totals also vary slightly with ledger taxonomy. RevAtlas therefore focuses on the documented 3.8-litre mechanical boundary and does not use a single approximate count as if it were an audited figure for one body style.

The launch E-type matters because its engineering package changed expectations for road-car performance and value. For the sound archive it provides a clean reference for Jaguar’s triple-carburettor XK six before the 4.2-litre torque increase and all-synchromesh gearbox. A useful comparison requires controlled load and a known exhaust system, especially on restored cars whose silencers, manifolds and engine tune may have changed repeatedly.

Lightweights, Low Drag cars, replicas, later 4.2 cars and converted survivors are excluded. Similar badges can cover different engines, transmissions, bodies and production programmes. Preserving those distinctions prevents a familiar name from becoming a blended specification that no single production car carried.

The mechanical reference is the 3.8 L XK inline-six, a 3,781 cc naturally aspirated inline-6 represented at 198 kW, 269 PS and 353 Nm. It works through a moss 4-speed manual with rear-wheel drive. Units and period rating conventions stay visible rather than being treated as directly interchangeable.

For sound documentation, the principal markers are triple-SU XK inline-six, Moss gearbox whine, twin-exhaust pulse, open or enclosed cabin resonance. A cold start must include uninterrupted cranking, first combustion and settling idle. Acceleration and fly-by submissions need gear, load, safe road or closed-course context, microphone position and weather. Factory-stock status requires evidence for intake, forced induction, catalysts, gearbox and silencers.

A photograph can establish useful visual context but cannot prove mechanical originality. Restoration, service replacement and reversible modification are common across performance cars. RevAtlas records configuration component by component, allowing modified survivors to remain useful without presenting them as untouched references. That method gives the E-type 3.8 a defensible page now and an exact home for future evidence.