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Austin Motor Company
Austin Motor Company

The Austin Motor Company was a United Kingdom manufacturer of automobiles that rose to be a major motorcar brand, the dominant partner after merger with Morris in 1952 but declining after absorption into the British Leyland Motor Corporation, and its subsequent troubles....
's small straight-4
Straight-4

The straight-4 or inline-4 engine is a four cylinder internal combustion engine with all four cylinder mounted in a straight line along the crankcase....
 automobile
Automobile

An automobile or motor car is a wheeled motor vehicle for transportation passengers, which also carries its own car engine or motor. Most definitions of the term specify that automobiles are designed to run primarily on roads, to have seating for one to eight people, to typically have four wheels, and to be constructed principally f...
 engine, the A-Series, is one of the most common in the world. Launched in 1951 with the Austin A30
Austin A30

The A30 was a compact car produced by Austin Motor Company in the 1950s. Introduced in 1951 as the "New Austin 7", it was Austin's answer to the Morris Minor....
, production lasted until 2000 in the Mini
Mini

The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
.

The A-Series design was licensed by Nissan of Japan, along with other Austin designs.






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Encyclopedia


A Series Engine
Austin Motor Company
Austin Motor Company

The Austin Motor Company was a United Kingdom manufacturer of automobiles that rose to be a major motorcar brand, the dominant partner after merger with Morris in 1952 but declining after absorption into the British Leyland Motor Corporation, and its subsequent troubles....
's small straight-4
Straight-4

The straight-4 or inline-4 engine is a four cylinder internal combustion engine with all four cylinder mounted in a straight line along the crankcase....
 automobile
Automobile

An automobile or motor car is a wheeled motor vehicle for transportation passengers, which also carries its own car engine or motor. Most definitions of the term specify that automobiles are designed to run primarily on roads, to have seating for one to eight people, to typically have four wheels, and to be constructed principally f...
 engine, the A-Series, is one of the most common in the world. Launched in 1951 with the Austin A30
Austin A30

The A30 was a compact car produced by Austin Motor Company in the 1950s. Introduced in 1951 as the "New Austin 7", it was Austin's answer to the Morris Minor....
, production lasted until 2000 in the Mini
Mini

The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
.

The A-Series design was licensed by Nissan of Japan, along with other Austin designs. That company quickly began modifying the A-Series, and it became the basis for many of the following Nissan engines.

A version of the A Series engine was used as the auxiliary power unit
Auxiliary power unit

An auxiliary power unit is a device on a vehicle whose purpose is to provide energy for functions other than propulsion. Different types of APU are found on aircraft, as well as on some large ground vehicles....
 on the British Centurion Main Battle Tank
Centurion tank

The Centurion was the primary United Kingdom main battle tank of the postwar period, and has proven itself be a successful tank design for most of the postwar decades; the Centurion's success has been mainly due to its thick armour, adaptability of its chassis to other roles, and numerous upgrades....
.

Specifications



A versions


803


The original A-Series engine displaced just 803 cm³ and was used in the A30
Austin A30

The A30 was a compact car produced by Austin Motor Company in the 1950s. Introduced in 1951 as the "New Austin 7", it was Austin's answer to the Morris Minor....
 and Morris Minor
Morris Minor

The Morris Minor was a popular British motor car aimed at the family market. It was the work of a team led by Alec Issigonis, who would go on to design the successful Mini....
. It had an undersquare 58 mm bore and 76.2 mm stroke. This engine was produced from 1952 until 1956.

Applications:
  • 1952–1956 Austin A30
    Austin A30

    The A30 was a compact car produced by Austin Motor Company in the 1950s. Introduced in 1951 as the "New Austin 7", it was Austin's answer to the Morris Minor....
    , 28 hp (21 kW) at 4400 rpm and 40 lbf·ft (54 N·m) at 2200 rpm
  • 1952–1956 Morris Minor Series II
    Morris Minor

    The Morris Minor was a popular British motor car aimed at the family market. It was the work of a team led by Alec Issigonis, who would go on to design the successful Mini....
    , 30 hp (22 kW) at 4800 rpm and 40 lbf·ft (54 N·m) at 2400 rpm


948


1956 saw a displacement increase, to 948 cm³. This was accomplished by boring the block out to 62.9 mm while retaining the original 76.2 mm stroke. It was produced through to 1964.

Applications:
  • 1956–1962 Austin A35
    Austin A35

    The A35 was a small car sold by the British Motor Corporation under the Austin marque in the 1950s.Introduced in 1956, it replaced the highly-successful Austin A30....
    , 34 hp (25 kW) at 4750 rpm and 50 lbf·ft (68 N·m) at 2000 rpm
  • 1956–1962 Morris Minor 1000
    Morris Minor

    The Morris Minor was a popular British motor car aimed at the family market. It was the work of a team led by Alec Issigonis, who would go on to design the successful Mini....
    , 37 hp (28 kW) at 4750 rpm and 50 lbf·ft (68 N·m) at 2500 rpm
  • 1958–1961 Austin A40 Farina
    Austin A40 Farina

    The Austin A40 Farina was a compact car introduced by the British Motor Corporation in 1958. It was designed by Pininfarina of Italy. The A40 designation had been used on previous Austins, but the "Farina" suffix was unique to this car....
    , 34 hp (25 kW) at 4750 rpm and 50 lbf·ft (68 N·m) at 2000 rpm
  • 1958–1961 Austin-Healey Sprite
    Austin-Healey Sprite

    The Austin-Healey Sprite is a small open sports car which was announced to the press in Monte Carlo by the British Motor Corporation on 20 May 1958, just before that year's Monaco Grand Prix....
    , 43 hp (32 kW) at 5200 rpm and 52 lbf·ft (71 N·m) at 3300 rpm
  • 1961–1962 Austin A40 Farina MkII
    Austin A40 Farina

    The Austin A40 Farina was a compact car introduced by the British Motor Corporation in 1958. It was designed by Pininfarina of Italy. The A40 designation had been used on previous Austins, but the "Farina" suffix was unique to this car....
    , 37 hp (28 kW) at 5000 rpm and 50 lbf·ft (68 N·m) at 2500 rpm
  • 1961–1964 Austin-Healey Sprite MkII
    Austin-Healey Sprite

    The Austin-Healey Sprite is a small open sports car which was announced to the press in Monte Carlo by the British Motor Corporation on 20 May 1958, just before that year's Monaco Grand Prix....
    , 46 hp (34 kW) at 5500 rpm and 53 lbf·ft (72 N·m) at 3000 rpm
  • 1961–1964 MG Midget
    MG Midget

    The MG Midget is a small sports car produced by MG division of the British Motor Corporation from 1961 through to 1979. It re-used a famous pre-war name used on MG M-type, MG D-type, MG J-type and so on....
    , 46 hp (34 kW) at 5500 rpm and 53 lbf·ft (72 N·m) at 3000 rpm


A diesel
Diesel engine

A diesel engine is an internal combustion engine which operates using the diesel cycle . Diesel engines have the highest thermal efficiency compared to any internal combustion or external combustion engine....
 version of the 948 cc A-Series engine (producing @ 2,500 RPM and 38 lbf ft (51 Nm) torque @ 1,750 RPM) was produced for the BMC Mini Tractor. It was developed with the help of Ricardo Consulting Engineers.

848


The 62.9 mm bore was retained for 1959s 848 cm³ Mini
Mini

The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
 version. This displacement was reached by dropping the stroke to 68.26 mm. This engine was produced through to 1980 for the Mini, when the A+ version supplanted it.

Applications:
  • 1959–1969 Austin Seven
    Austin Seven

    There were four Austin Motor Company cars to use the Seven name:* A single cylinder car produced in 1909* The 1922-1939 Austin 7* The original Mini...
    /Austin Mini/Morris Mini, 34 hp (25 kW) at 5500 rpm and 44 lbf·ft (60 N·m) at 2900 rpm
  • 1961–1962 Riley Elf/Wolseley Hornet, 34 hp (25 kW) at 5500 rpm and 44 lbf·ft (60 N·m) at 2900 rpm
  • 1964–1968 Mini Moke
    Mini Moke

    The Mini Moke is a vehicle based on the Mini and designed for the British Motor Corporation by Alec Issigonis. The name comes from "Mini"?the car with which the Moke shares many parts?and "Moke", which is an archaic dialect term for "donkey"....
    , 34 hp (25 kW) at 5500 rpm and 44 lbf·ft (60 N·m) at 2900 rpm
  • 1969–1980 Mini 850/City
    Mini

    The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
    , 33 hp (25 kW) at 5300 rpm and 44 lbf·ft (60 N·m) at 2900 rpm


997


The one-off 997 cm³ version for the Mini Cooper
Mini

The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
 used a smaller 62.43 mm bore and longer 81.28 mm stroke. It was produced from 1961 through to 1964.

Applications:
  • 1961–1964 Austin/Morris Mini Cooper
    Mini

    The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
    , 55 hp (41 kW) at 6000 rpm and 54 lbf·ft (73 N·m) at 3600 rpm


998


The Mini
Mini

The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
 also got a 998 cm³ version. This was similar to the 948 in that it had the same 76.2 mm stroke but was bored out slightly to 64.58 mm. It was produced from 1962 until 1980.

Applications:
  • 1962–1969 Riley Elf/Wolseley Hornet, 38 hp (28 kW) at 5250 rpm and 52 lbf·ft (71 N·m) at 2700 rpm
  • 1966–1982 Mini Moke
    Mini Moke

    The Mini Moke is a vehicle based on the Mini and designed for the British Motor Corporation by Alec Issigonis. The name comes from "Mini"?the car with which the Moke shares many parts?and "Moke", which is an archaic dialect term for "donkey"....
    , Australian Mokes.
  • 1983–1993 Mini Moke
    Mini Moke

    The Mini Moke is a vehicle based on the Mini and designed for the British Motor Corporation by Alec Issigonis. The name comes from "Mini"?the car with which the Moke shares many parts?and "Moke", which is an archaic dialect term for "donkey"....
    , Portuguese Mokes.
  • 1964–1969 Austin/Morris Mini Cooper
    Mini

    The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
    , 55 hp (41 kW) at 5800 rpm and 57 lbf·ft (77 N·m) at 3000 rpm
  • 1967–1980 Austin/Morris Mini
    Mini

    The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
    , 38 hp (28 kW) at 5250 rpm and 52 lbf·ft (71 N·m) at 2700 rpm
  • 1969–1975 Mini Clubman
    Mini

    The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
    , 38 hp (28 kW) at 5250 rpm and 52 lbf·ft (71 N·m) at 2700 rpm
  • 1969–1980 Mini Clubman (automatic)
    Mini

    The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
    , 41 hp (31 kW) at 4850 rpm and 52 lbf·ft (71 N·m) at 2750 rpm


1098


The 1.1 L (1098 cm³) version was produced for the larger BMC saloons. It was a stroked (to 83.72 mm) version of the 998 previously used in the Riley Elf and Wolseley Hornet. It was produced from 1962 through to 1980.

Applications:
  • 1962–1967 Austin A40 Farina
    Austin A40 Farina

    The Austin A40 Farina was a compact car introduced by the British Motor Corporation in 1958. It was designed by Pininfarina of Italy. The A40 designation had been used on previous Austins, but the "Farina" suffix was unique to this car....
    , 48 hp (36 kW) at 5100 rpm and 60 lbf·ft (81 N·m) at 2500 rpm
  • 1962–1971 Morris 1100/Morris Minor 1000
    Morris Minor

    The Morris Minor was a popular British motor car aimed at the family market. It was the work of a team led by Alec Issigonis, who would go on to design the successful Mini....
    , 48 hp (36 kW) at 5100 rpm and 60 lbf·ft (81 N·m) at 2500 rpm
  • 1962–1968 MG 1100, 55 hp (41 kW) at 5500 rpm and 61 lbf·ft (83 N·m) at 2500 rpm
  • 1962–1964 Austin-Healey Sprite MkII
    Austin-Healey Sprite

    The Austin-Healey Sprite is a small open sports car which was announced to the press in Monte Carlo by the British Motor Corporation on 20 May 1958, just before that year's Monaco Grand Prix....
    , 56 hp (42 kW) at 5500 rpm and 62 lbf·ft (84 N·m) at 3250 rpm
  • 1962–1964 MG Midget
    MG Midget

    The MG Midget is a small sports car produced by MG division of the British Motor Corporation from 1961 through to 1979. It re-used a famous pre-war name used on MG M-type, MG D-type, MG J-type and so on....
    , 56 hp (42 kW) at 5500 rpm and 62 lbf·ft (84 N·m) at 3250 rpm
  • 1963–1974 Austin 1100, 48 hp (36 kW) at 5100 rpm and 60 lbf·ft (81 N·m) at 2500 rpm
  • 1963–1967 Vanden Plas Princess 1100, 55 hp (41 kW) at 5500 rpm and 61 lbf·ft (83 N·m) at 2500 rpm
  • 1964–1966 Austin-Healey Sprite MkIII
    Austin-Healey Sprite

    The Austin-Healey Sprite is a small open sports car which was announced to the press in Monte Carlo by the British Motor Corporation on 20 May 1958, just before that year's Monaco Grand Prix....
    , 59 hp (44 kW) at 5750 rpm and 65 lbf·ft (88 N·m) at 3500 rpm
  • 1964–1966 MG Midget MkII
    MG Midget

    The MG Midget is a small sports car produced by MG division of the British Motor Corporation from 1961 through to 1979. It re-used a famous pre-war name used on MG M-type, MG D-type, MG J-type and so on....
    , 59 hp (44 kW) at 5750 rpm and 65 lbf·ft (88 N·m) at 3500 rpm
  • 1965–1968 Riley Kestrel/Wolseley 1100, 55 hp (41 kW) at 5500 rpm and 61 lbf·ft (83 N·m) at 2500 rpm
  • 1973–1975 Austin Allegro
    Austin Allegro

    The Austin Allegro is a small family car that was manufactured by British Leyland under the Austin Motor Company name from 1973 until 1983. The same vehicle was built in Italy by Innocenti in 1974 and 1975 and sold as the Innocenti Regent....
    , 49 hp (37 kW) at 5250 rpm and 60 lbf·ft (81 N·m) at 2450 rpm
  • 1975–1980 Austin Allegro
    Austin Allegro

    The Austin Allegro is a small family car that was manufactured by British Leyland under the Austin Motor Company name from 1973 until 1983. The same vehicle was built in Italy by Innocenti in 1974 and 1975 and sold as the Innocenti Regent....
    , 45 hp (34 kW) at 5250 rpm and 55 lbf·ft (75 N·m) at 2900 rpm
  • 1968–1982 Mini Moke
    Mini Moke

    The Mini Moke is a vehicle based on the Mini and designed for the British Motor Corporation by Alec Issigonis. The name comes from "Mini"?the car with which the Moke shares many parts?and "Moke", which is an archaic dialect term for "donkey"....
     Australia only.
  • 1975–1980 Mini Clubman
    Mini

    The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
    , 45 hp (34 kW) at 5250 rpm and 56 lbf·ft (76 N·m) at 2700 rpm
  • 1979–1980 Mini 1100 Special
    Mini

    The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
    , 45 hp (34 kW) at 5250 rpm and 56 lbf·ft (76 N·m) at 2700 rpm


1071


The 1071 cm³ version was another one-off, this time for the Mini Cooper S
Mini

The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
. It used a new 70.6 mm bore size and the 68.26 mm stroke from the 848. It was only produced in 1963 and 1964. Paired with the even rarer 970 cc version, below, it became that rarest of things: an oversquare A-series engine.

Applications:
  • 1963–1964 Austin/Morris Mini Cooper S
    Mini

    The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
    , 70 hp (52 kW) at 6000 rpm and 62 lbf·ft (84 N·m) at 4500 rpm


970


The Mini Cooper S
Mini

The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
 next moved on to a 970 cm³ version. It had the same 70.6 mm bore as the 1071 cm³ Cooper S but used a shorter 61.91 mm stroke. It was produced from 1964 through to 1967.

Applications:
  • 1964–1967 Austin/Morris Mini Cooper S
    Mini

    The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
    , 65 hp (48 kW) at 6500 rpm and 55 lbf·ft (75 N·m) at 3500 rpm


1275


The largest A-Series engine displaced 1.3 L (1275 cm³). It used the 70.6 mm bore from the Mini Cooper S
Mini

The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
 versions but the 81.28 mm stroke from the plain Mini Cooper. It was produced from 1964 until 1980 when it was replaced by an A+ version.

Applications:
  • 1964–1971 Austin/Morris Mini Cooper S
    Mini

    The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
    , 76 hp (57 kW) at 5800 rpm and 79 lbf·ft (107 N·m) at 3000 rpm
  • 1966–1970 Austin-Healey Sprite MkIV
    Austin-Healey Sprite

    The Austin-Healey Sprite is a small open sports car which was announced to the press in Monte Carlo by the British Motor Corporation on 20 May 1958, just before that year's Monaco Grand Prix....
    , 65 hp (48 kW) at 6000 rpm and 72 lbf·ft (98 N·m) at 3000 rpm
  • 1966–1974 MG Midget MkIII
    MG Midget

    The MG Midget is a small sports car produced by MG division of the British Motor Corporation from 1961 through to 1979. It re-used a famous pre-war name used on MG M-type, MG D-type, MG J-type and so on....
    , 65 hp (48 kW) at 6000 rpm and 72 lbf·ft (98 N·m) at 3000 rpm
  • 1967–1968 MG 1300/Wolseley 1300, 58 hp (43 kW) at 5250 rpm and 69 lbf·ft (94 N·m) at 3000 rpm
  • 1967–1968 Riley Kestrel 1300, 58 hp (43 kW) at 5250 rpm and 69 lbf·ft (94 N·m) at 3000 rpm
  • 1967–1968 Vanden Plas Princess 1300, 58 hp (43 kW) at 5250 rpm and 69 lbf·ft (94 N·m) at 3000 rpm
  • 1967–1973 Morris 1300, 58 hp (43 kW) at 5250 rpm and 69 lbf·ft (94 N·m) at 3000 rpm
  • 1967–1974 Austin 1300, 58 hp (43 kW) at 5250 rpm and 69 lbf·ft (94 N·m) at 3000 rpm
  • 1967 MG 1275/Riley 1275, 58 hp (43 kW) at 5250 rpm and 69 lbf·ft (94 N·m) at 3500 rpm
  • 1967 Wolseley 1275, 58 hp (43 kW) at 5250 rpm and 69 lbf·ft (94 N·m) at 3500 rpm
  • 1967 Vanden Plas Princess 1275, 58 hp (43 kW) at 5250 rpm and 69 lbf·ft (94 N·m) at 3500 rpm
  • 1968–1969 Riley Kestrel 1300/Riley 1300, 70 hp (52 kW) at 6000 rpm and 77 lbf·ft (104 N·m) at 3000 rpm
  • 1968–1971 Austin America (automatic), 60 hp (45 kW) at 5250 rpm and 69 lbf·ft (94 N·m) at 2500 rpm
  • 1968–1973 Wolseley 1300 (manual), 65 hp (48 kW) at 5750 rpm and 71 lbf·ft (96 N·m) at 3000 rpm
  • 1968–1973 MG 1300 MkII, 70 hp (52 kW) at 6000 rpm and 77 lbf·ft (104 N·m) at 3000 rpm
  • 1968–1974 Vanden Plas Princess 1300 (manual), 65 hp (48 kW) at 5750 rpm and 71 lbf·ft (96 N·m) at 3000 rpm
  • 1968 MG 1300/Riley Kestrel 1300, 65 hp (48 kW) at 5750 rpm and 71 lbf·ft (96 N·m) at 3000 rpm
  • 1969–1971 Morris 1300GT, 70 hp (52 kW) at 6000 rpm and 74 lbf·ft (100 N·m) at 3250 rpm
  • 1971–1982 Mini Moke Californian
    Mini Moke

    The Mini Moke is a vehicle based on the Mini and designed for the British Motor Corporation by Alec Issigonis. The name comes from "Mini"?the car with which the Moke shares many parts?and "Moke", which is an archaic dialect term for "donkey"....
     Australian only.
  • 1969–1974 Mini 1275GT
    Mini

    The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
    , 59 hp (44 kW) at 5300 rpm and 65 lbf·ft (88 N·m) at 2550 rpm
  • 1969–1974 Austin 1300GT, 70 hp (52 kW) at 6000 rpm and 74 lbf·ft (100 N·m) at 3250 rpm
  • 1971–1980 Morris Marina
    Morris Marina

    The Morris Marina was a car manufactured by the Morris division of British Leyland Motor Corporation throughout the 1970s, a period of great turbulence and difficulty for the United Kingdom car industry....
    , 60 hp (45 kW) at 5250 rpm and 69 lbf·ft (94 N·m) at 2500 rpm
  • 1971 Austin Sprite, 65 hp (48 kW) at 6000 rpm and 72 lbf·ft (98 N·m) at 3000 rpm
  • 1973–1980 Austin Allegro
    Austin Allegro

    The Austin Allegro is a small family car that was manufactured by British Leyland under the Austin Motor Company name from 1973 until 1983. The same vehicle was built in Italy by Innocenti in 1974 and 1975 and sold as the Innocenti Regent....
    , 59 hp (44 kW) at 5300 rpm and 69 lbf·ft (94 N·m) at 3000 rpm
  • 1974–1980 Mini 1275GT
    Mini

    The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
    , 54 hp (40 kW) at 5300 rpm and 65 lbf·ft (88 N·m) at 2550 rpm


A-Plus versions


British Leyland was keen to update the old A-Series design in the 1970s. However, attempts at replacement, including an aborted early-70s K-Series and an OHC version of the A-Series, ended in failure. The little A-Series just worked too well. So the "A-Plus" was born. By tweaking the engine, BL engineers were able to extract more power without affecting torque. Some engine components were also replaced with more-reliable designs.

998 Plus


The A-Plus version of the 998 cm³ motor was produced from 1980 until 1992.

Applications:
  • 1980–1982 Mini 1000/City/HL
    Mini

    The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
    , 39 hp (29 kW) at 4750 rpm and 52 lbf·ft (71 N·m) at 2000 rpm
  • 1980–1982 Austin Allegro
    Austin Allegro

    The Austin Allegro is a small family car that was manufactured by British Leyland under the Austin Motor Company name from 1973 until 1983. The same vehicle was built in Italy by Innocenti in 1974 and 1975 and sold as the Innocenti Regent....
    , 44 hp (33 kW) at 5250 rpm and 52 lbf·ft (71 N·m) at 3000 rpm
  • 1980–1990 Austin Metro, 41 hp (31 kW) at 5400 rpm and 51 lbf·ft (69 N·m) at 2700 rpm
  • 1982–1988 Mini HLE/City E/Mayfair, 40 hp (30 kW) at 5000 rpm and 50 lbf·ft (68 N·m) at 2500 rpm
  • 1981-1986 Austin Metro HLE and
  • 1988–1992 Mini City/Mayfair, 42 hp (31 kW) at 5250 rpm and 58 lbf·ft (79 N·m) at 2600 rpm


1275 Plus


The big 1.3 L (1275 cm³) engine was also given the "A-Plus" treatment. This lasted from 1980 until 2000, making it the last of the A-Series line.

Applications:
  • 1980–1982 Austin Allegro
    Austin Allegro

    The Austin Allegro is a small family car that was manufactured by British Leyland under the Austin Motor Company name from 1973 until 1983. The same vehicle was built in Italy by Innocenti in 1974 and 1975 and sold as the Innocenti Regent....
    , 62 hp (46 kW) at 5600 rpm and 72 lbf·ft (98 N·m) at 3200 rpm
  • 1980–1984 Morris Ital
    Morris Ital

    The Morris Ital was a medium-sized car built by British Leyland from 1980 until 1984....
    , 61 hp (46 kW) at 5300 rpm and 69 lbf·ft (94 N·m) at 2950 rpm
  • 1980–1990 Austin Metro, 63 hp (47 kW) at 5650 rpm and 72 lbf·ft (98 N·m) at 3100 rpm
  • 1982–1989 MG Metro, 72 hp (54 kW) at 6000 rpm and 73 lbf·ft (99 N·m) at 4000 rpm
  • 1983–1985 Austin Maestro HLE
    Austin Maestro

    The Austin Maestro is a mid-sized 5-door hatchback car that was produced from 1983 to 1994, initially by the Austin Rover Group subsidiary of British Leyland , and from 1988 onwards by successor organisation Rover Group....
    , 64 hp (48 kW) at 5500 rpm and 73 lbf·ft (99 N·m) at 3500 rpm
  • 1983–1993 Austin Maestro
    Austin Maestro

    The Austin Maestro is a mid-sized 5-door hatchback car that was produced from 1983 to 1994, initially by the Austin Rover Group subsidiary of British Leyland , and from 1988 onwards by successor organisation Rover Group....
    , 68 hp (51 kW) at 5800 rpm and 75 lbf·ft (102 N·m) at 3500 rpm
  • 1984–1989 Austin Montego
    Austin Montego

    The Austin Montego is a British mid-size sedan car that was produced by the Austin Rover Group subsidiary of British Leyland , and its successors, from 1984 until 1994....
    , 68 hp (51 kW) at 5600 rpm and 75 lbf·ft (102 N·m) at 3500 rpm
  • 1989–1990 MG Metro GTa, 73 hp (54 kW) at 6000 rpm and 73 lbf·ft (99 N·m) at 4000 rpm
  • 1990–1991 Mini Cooper
    Mini

    The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
    , 61 hp (46 kW) at 5550 rpm and 61 lbf·ft (83 N·m) at 3000 rpm
  • 1990–1991 Mini Cooper S
    Mini

    The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
    , 78 hp (58 kW) at 6000 rpm and 78 lbf·ft (106 N·m) at 3250 rpm
  • 1991–1996 Mini Cooper 1.3i/Cabriolet
    Mini

    The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
    , 63 hp (47 kW) at 5700 rpm and 70 lbf·ft (95 N·m) at 3900 rpm
  • 1991–1996 Mini Cooper S 1.3i
    Mini

    The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
    , 77 hp (57 kW) at 5800 rpm and 80 lbf·ft (108 N·m) at 3000 rpm
  • 1992–1996 Mini Sprite/Mayfair, 50 hp (37 kW) at 5000 rpm and 66 lbf·ft (89 N·m) at 2600 rpm


1275 Turbo


Turbo versions lasted from 1983 until 1990.

Applications:
  • 1983–1989 MG Metro Turbo, 94 hp (69 kW) at 6130 rpm and 85 lbf·ft (115 N·m) at 2650 rpm
  • 1989–1990 Mini ERA Turbo
    Mini

    The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
    , 94 hp (69 kW) at 6130 rpm and 85 lbf.ft at 3600 rpm


The later ERA version had a revised setting in the ECU to give less low down torque to stop premature gearbox wear.

1275 TPi


A special "twin-port injection" version of the 1.3 L (1275 cm³) engine was developed by Rover engineer, Mike Theaker. It was the last A-Series variant, produced from 1997 through to 2000.

Applications
  • 1997–2000 Mini Cooper 1.3i (TPi)
    Mini

    The Mini is a small Automobile that was produced by the British Motor Corporation and its successors from 1959 until 2000. The original is considered an icon of the 1960s, and its space-saving front-wheel-drive layout influenced a generation of car-makers....
    , 63 hp (47 kW) at 5500 rpm and 70 lbf·ft (95 N·m) at 3000 rpm


JOHN COOPER GARAGES

During the 1990s Mini Cooper revival, John Cooper Garages offered a number of factory-approved "Cooper S" and "Cooper Si" upgrades to the standard Coopers. The conversions came with a full Rover warranty, and could initially be fitted by any franchised Rover dealer.

S pack (carb) 77bhp - 1st Si pack (Spi)77bhp - 2nd Si pack (Spi)82bhp - 3rd Si pack (Spi)86bhp - 1997 Si pack (Tpi)85bhp @ 5500rpm - 1999 Si pack (Tpi)90bhp @ 6000rpm