• Jaguar XK140 OTS

Jaguar XK140 OTS

XK = engine (X-experimental/K-type series)
140 = maximum speed
SE = "Special Equipment" (optional)
M = "Modified" - "Special Equipment" only USA (optional)
MC = "Modified" - "Special Equipment" with C-Type cylinder head only USA (optional)
OTS = Open Two Seater

Construction period October 1954 to February 1957
basis price £ 1127

3354 vehicles built
73 vehicles with right hand drive (RHD)
3281 vehicles with left hand drive (LHD)

Chassis Numbers

vehicles with right hand drive (RHD): 800001 to 800074
vehicles with left hand drive (LHD): 810001 to 813282

chassis numbers with a prefixed "A": "Special Equipment"
chassis numbers with a prefixed "S": "Special Equipment", additionally fitted with C-Type cylinder head
chassis numbers with a postfixed "DN": vehicle has integrated "Overdrive"
chassis numbers with a postfixed "BW": vehicle has integrated automatic

Engineering Changes

March 1955

(from OTS Model 800022 and 811193)

Fastening nut in the prop shaft flange at the differential fitted with lock plate. Applies to vehicles with Overdrive and translated 4,09:1 rear axle.

June 1955

(from OTS Model 800025 and 811284)

new rear wheel brake cylinder (part number 39677) fitted

(ab OTS Model 800031 und 811382)

Overdrive control circuit is fitted with relays

(ab OTS Model 800037 und 811424)

Radiator C.9619 with new bracket C.8830 fitted.

September 1955

(from OTS Model 800052 and 811562)

Self-aligning torque of the steering reduced. The castor angle will shortens from 2,½o-3o to 1,½o-2o.

December 1955

(from OTS Model 800062 and 811866)

Reducing damper switch fitted on vehicles with Overdrive.
Prevents to switch over from Overdrive to the highest gear, if you braking with closed reducing damper.

April 1956

(from OTS Model 800071 and 812311)

strengthen the holding bolt of the rear axle drive in the differential case from 9,5 to 11 mm in roadsters with standard transmission

September 1956

(from OTS Model 800072 and 812647)

new handbrake lever fitted



inline 6 cylinder 4 stroke


two overhead camshafts (DOHC), which are driven via chain


valve angle 70o, overhead valves

bore x stroke

82 x 106 mm


3442 cc


190 bhp at 5500 rpm
210 bhp at 5750 rpm at SE/MC

maximun torque

210 lb ft at 2500 rpm
213 lb ft at 4000 rpm at SE/MC

compression ratio





front: drum brakes
rear: drum brakes


4 speed manual, as off second speed synchronized, transfer over prop shaft to the rear axle

wheel suspension

front: wishbone with torsion bar springs and hydraulic shock absorbers
rear: rigid axle with flat springs and hydraulic telescope shock absorbers


all-steel body with aluminum doors and bonnet


8 ft 6 in


14 ft 8 in


5 ft 2 in


4 ft 5 in

maximum speed

121 mph
129 mph at SE

acceleration 0–60 mph

9.0 sec
8.4 sec at SE

dry weight

24,5 cwt. l.

kerb weight

27 cwt. l.