Morris Isis

Morris Isis and Twenty Five
Isis 2468cc first registered 24 March 1932
Overview
Manufacturer	Morris Motors Limited
Production	1929–35 7406 made
Body and chassis
Body style	4-door saloon 4-door tourer coupé
Powertrain
Engine	2.5 L or 3.5 L Straight-6
Transmission	3- or 4-speed manual
Dimensions
Wheelbase	120 in (3,048 mm)
Length	178 in (4,521 mm)
Width	71 in (1,803 mm)

Morris Isis Series I
Overview
Manufacturer	BMC
Production	1955–56 8541 made
Assembly	United Kingdom Victoria Park, Australia
Body and chassis
Body style	4-door saloon 2-door estate car
Related	Morris Oxford series II
Powertrain
Engine	2.6 L C-Series Straight-6
Transmission	4-speed manual optional overdrive
Chronology
Predecessor	Morris Six MS

Morris Isis Series II
Overview
Manufacturer	BMC
Production	1956–58 3614 made
Body and chassis
Body style	4-door saloon 2-door estate car
Powertrain
Engine	2.6 L C-Series Straight-6
Transmission	4-speed manual, Overdrive optional, Automatic available
Dimensions
Wheelbase	107.5 in (2,730 mm)
Length	178 in (4,521 mm)
Width	65 in (1,651 mm)
Chronology
Successor	Line discontinued in favour of Wolseley 6/99

The Morris Isis name was first briefly used by Morris Motors LImited on a six-cylinder car made from 1929 to 1931. It was resurrected on a new six-cylinder midsize car from the British Motor Corporation in the 1950s to replace the Morris Six MS.

The name died out in 1958.

The Isis announced in July 1929 was a revised version of the 1927 Morris Six JA series and used the same 2468 cc engine and 3-speed gearbox. It had an all-new chassis, and the steel body had an American look, not surprising, as the body pressing dies made by Budd for the Morris-Budd joint venture, Pressed Steel Company, were shared with some Dodge models. William Morris had recognised the potential of pressed steel car bodies and introduced them to Europe in Pressed Steel Company, a joint venture with Budd, sited beside William Morris's Cowley plant.

It was the first Morris to have hydraulic brakes and chromium plating replaced the previous nickel finish on brightwork.

The car could exceed 65 mph (105 km/h) and return 28 miles per imperial gallon (10 L/100 km; 23 mpg_‑US).

After 3939 of the original Isis model had been made it received a facelift announced 1 September 1932. Following the court-forced separation of William Morris from his joint venture with Edward G Budd the all-steel body was replaced by a traditional wood frame construction. Mechanically the car was similar but the gearbox received syncromesh and a fourth speed (Twin-Top), the chassis received additional cross bracing in 1934 and an automatic clutch and freewheel were fitted to some models. 3467 of the new Isis were made (including Twenty-Five models).

A de-luxe version, the Morris Twenty-Five was launched 12 October 1932 for the 1932 London Motor Show with larger 3485 cc engine. It was replaced in July 1935 by a new Twenty-Five, the flagship of the series II Morris range, and given an overhead valve engine (as the series III) in August 1938 with the rest of the Morris range.

The Series I Isis was launched in 1955 as a replacement for the Morris Six MS. It featured a six-cylinder engine, the 2.6 L (2639 cc/161 in³), 86 bhp (64 kW) C-Series unit from the Austin Westminster. Unlike the Westminster, the Isis had a single SU carburettor. The four-speed gearbox had a column change and was available with an optional Borg-Warner overdrive unit.