The Jaguar Mk IX 1958-1961 |
| Years |
MK IX 1958-1961 |
| See also |
MK VII MK VIII |
| Notes |
The MK IX was Introduced at the Earls Court London motor show
in the fall of 1958. Visually it was almost identical to its predecessor the MK VIII.
Mechanically however much was updated. Under the hood the engine capacity was increased to
3.8 liters by the adotion of the 3.8 version of the XK engine. This was achieved by
increasing the stroke from 83mm to 87mm and using a slightly taller block. The existing
"B" type cylinder head was retained as fitted to the 3.4 engine in the MK
VIII. This engine went on to be fitted to the XK150 sports car the following year in
both standard, and uprated "S" state of tune. The previous braking system was
upgraded to Dunlop 4 wheel disc system, and power steering was made available as a
standard fitment. This system had debuted in late models of the MK VIII. It was driven by
a Hobourn Eaton pump driven by a take-off at the rear of the dynamo.
Nothing much changed inside the car, as the MK VIII was already superbly equipped. The
major change was the up-rating of the heater system which had been criticized as being
marginal,
As with the MK VIII the majority of MK IX's were sold with a dual color scheme, darker
color on top.
As mentioned in the section on the MK VIII, production of the low volume MK VIIIB
continued throughout the life of the MK IX |
| Description |
4 door sedan (saloon), separate chassis |
| Colors |
See the large sedans colors
page |
Additional Pictures
We are grateful to Docs Jags
for their kind permission to use selected images in this database
|
1959 Jaguar MK IX sedan
 courtesy Benedikt Lehner and his brother-in-law Chris Vellender
who restored it.
Note one piece windshield, chrome surround to radiator grille, and the Jaguar leaper. Also
cut-outs in rear wheel spats. |
| Engines |
| Model |
Engine |
Bore/Stroke |
Power |
| MK IX |
3781cc 6 cyl twin ohc |
87 x 106 mm |
220 bhp @ 5500 rpm |
|
| Carburetors |
|
|
Engines is enlarged 3.8 version of the XK engine |
| Brakes |
Four wheel discs, servo assist (Dunlop) |
Production
(Various sources differ, slightly) |
| MK IX (RHD) |
5984 |
Total 10005 |
| MK IX (LHD) |
4021 |
|
| Weight |
|
| Length |
16 feet 4 1/2 inches |
| Height |
5 feet 3 inches |
| Width |
6 feet 1 inches |
| Top speed |
115 mph |
| Wheelbase |
120 inches |
| Transmission |
4-speed manual. optional Borg and Warner 3 speed
automatic transmission. Laycock de Normanville overdrive fitted on the standard
transmission car. |
| Suspension |
| Front |
Independent. wishbones and torsion bar, anti roll bar |
| Rear |
Live axle, half elliptic leaf springs. |
|
| Chassis Numbers |
BW Suffix indicates fitment of Borg Warner automatic
transmission
DN Prefix indicates firment of overdrive (De Normanville)
| MK IX Sedan |
770001 and up - Right hand drive
790001 and up - Left hand drive |
|
|
| Standard Equipment |
Leather seats, fog/spot lights.Hub caps, sun roof, disc
brakes,power assisted steering. |
| Options |
Two tone paint colors |
| Notes |
According to Larry Martz
the tachometer changed from mechanical to electric operation at chassis numbers 771820 RHD
and 791072 LHD. Larry maintains the MK IX registry |