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Jaguar Mark IV

From Wikipedia, the free encyclopedia

SS Jaguar
1½—2½—3½ Litre
Jaguar Mk IV 2.5 Litre (1947) (8051567557).jpg
Jaguar 2½ litre sports saloon 1947
AssemblyCoventry, England
Body and chassis
ClassExecutive car (E)
LayoutFR layout
PredecessorSS Cars Ltd SS1
SuccessorJaguar Mark V

The Jaguar Mark IV (pronounced mark four) is a range of automobiles built by Jaguar Cars from 1945 to 1949. The cars were marketed as the Jaguar 1½ litre, Jaguar 2½ litre and Jaguar 3½ litre with the Mark IV name later applied in retrospect to separate this model from the succeeding Mark V range.

The range was a return to production of the SS Jaguar 1½ litre, 2½ litre and 3½ litre models produced by SS Cars from 1935 to 1940.[1] Before World War II the model name Jaguar was given to all cars in the range built by SS Cars Ltd with the saloons titled SS Jaguar 1½ litre, 2½ litre or 3½ litre and the two-seater sports cars the SS Jaguar 100 2½ litre or 3½ litre. In March 1945 the company name SS Cars Ltd was changed to Jaguar Cars Ltd.[2]

All the Mark IVs were built on a separate chassis frame with suspension by semi-elliptic leaf springs on rigid axles front and rear.

SS Jaguar and Jaguar 1½ Litre

SS Jaguar 1½ Litre
Jaguar 1½ Litre
SS Jaguar 1.5Litre (1937) (14268238138).jpg
SS Jaguar sports saloon 1937
10,980 made[3]
Body and chassis
Body style4-door saloon
2-door drophead coupé
Engine1,608 cc (1.6 l) I4
1,776 cc (1.8 l) I4
Transmission4-speed manual
Wheelbase112.5 in (2,860 mm)
Length173 in (4,390 mm)[4]
Width65.5 in (1,660 mm)
Height60 in (1,520 mm)[5]

The smallest model of the range originally featured a 1608 cc side valve Standard engine but from 1938 this was replaced by a 1776 cc overhead-valve unit still from Standard who also supplied the four-speed manual transmission.

Pre-war the car was available as a saloon or drophead coupé but post war only the closed model was made. Up to 1938 body construction on all the models was by the traditional steel on wood method but in that year it changed to all steel. Performance was not a strong point but 70 mph (113 km/h) was possible: the car featured the same cabin dimensions and well-appointed interior as its longer-engined brothers.[3]

Despite its lack of out-and-out performance, a report of the time, comparing the 4-cylinder 1½-litre with its 6-cylinder siblings, opined that the smallest-engined version of the car was "as is often the case ... the sweetest running car" with a "big car cruising gait in the sixties".[5]

Mechanically operated brakes using a Girling system were fitted.

SS Jaguar sports saloon 1937
SS Jaguar sports saloon 1937

SS Jaguar and Jaguar 2½ Litre

SS Jaguar 2½ Litre
Jaguar 2½ Litre
Jaguar 1936 - Flickr - mick - Lumix.jpg
SS Jaguar sports saloon 1936
6281 made[3]
Body and chassis
Body style4-door saloon
2-door drophead coupé
Engine2,664 cc (2.7 l) I6
Wheelbase1935–1937: 119 in (3,020 mm)
1938–1948: 120 in (3,050 mm)
Length186 in (4,720 mm)[4]
Width66 in (1,680 mm)

Again the engine was sourced from Standard but had the cylinder head reworked by SS to give 105 bhp.[3] Unlike the 1½ Litre there were some drophead models made post-war.

The chassis was originally of 119 in (3,020 mm) but grew by an inch (25 mm) in 1938 to 120 in (3,050 mm). The extra length over the 1½ Litre was used for the six-cylinder engine and the passenger accommodation was the same size.

SS Jaguar and Jaguar 3½ Litre

SS Jaguar 3½ Litre
Jaguar 3½ Litre
1947 Jaguar MK IV Limousine IMG 0925 - Flickr - nemor2.jpg
Jaguar sports saloon 1947
3162 made[3]
Body and chassis
Body style4-door saloon
2-door drophead coupé
Engine3,485 cc (3.5 l) I6
Wheelbase120 in (3,050 mm)
Length186 in (4,720 mm)[4]
Width66 in (1,680 mm)

The 3½ Litre, introduced in 1938, was essentially the same body and chassis as the 2½ Litre but the larger 125 bhp [3] engine gave better performance but at the expense of economy. The rear axle ratio was 4.25:1 as opposed to the 4.5:1 on the 2½ Litre.


  1. ^ Pre and Post war 1.5/2.5/3.5L Models,
  2. ^ S.S. Cars Limited. The Times, Wednesday, 4 Apr 1945; pg. 10; Issue 50108
  3. ^ a b c d e f Robson, Graham (2006). A–Z British Cars 1945–1980. Devon, UK: Herridge & Sons. ISBN 0-9541063-9-3.
  4. ^ a b c Culshaw; Horrobin (1974). Complete Catalogue of British Cars. London: Macmillan. ISBN 0-333-16689-2.
  5. ^ a b "Second Hand car guide supplement". Practical Motorist. vol. 6 Nbr 68: 768–769. April 1960.

External links

This page was last edited on 3 March 2020, at 23:56
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