an OHV configuration and sidedraft SU carburettor. Engines were available in diesel in the BMC tractor. All A-series engines up until mid-1970 were painted in British Standard (381c) 223 Middle Bronze Green. This does not include overseas production models such as Australian manufacture. note* "factory/dealer warranty replacement" units were painted black, these were primarily distributed for the failures common to the "wet crank" primary gear system in early Minis. A versions 803 The original A-series engine displaced just and was used in the A30 and Morris Minor. It had an undersquare bore and stroke. This engine was produced from 1952 to 1956. Applications: 1952–56 Austin A30, at 4400 rpm and at 2200 rpm 1952–56 Morris Minor Series II, at 4800 rpm and at 2400 rpm 948 1956 saw a displacement increase, to . This was accomplished by increasing the bore to while retaining the original stroke. It was produced until 1964. 848 The bore was retained for 1959s Mini version. This displacement was reached by dropping the stroke to . This engine was produced through to 1980 for the Mini, when the 998 A-Plus version supplanted it. Applications: 997 The one-off version for the Mini Cooper used a smaller bore and longer stroke. It was produced from 1961 to 1964. Applications: 1961–1964 Austin/Morris Mini Cooper, at 6000 rpm and at 3600 rpm 998 The Mini also got a version. This was similar to the 948 in that it had the same stroke but the bore was increased slightly to . It was produced from 1962 to 1992. This engine was first introduced into the Mk II versions of the Riley Elf and Wolseley Hornet, before coming common fitment in the mainstream Minis. 1098 The version was fitted to: MG Midget Mk1 1098cc from Oct 62- 64 MG Midget Mk2 1098cc of 1964- 66 Austin A35 Van 1098cc of 1962- 68 Austin A40 Farina Mk2 - From Oct 62- 68 Morris Minor from Oct 62- 71. Austin / Morris BMC Saloon from 1962. Mini and its derivatives, the 1098cc engine mounted transversely. It was a stroked (to ) version of the 998 previously used in the Riley Elf and Wolseley Hornet. It was produced from 1962 to 1980. 1070 The version was another one-off, this time for the Mini Cooper S. It used a new bore size and the stroke from the 848. It was only produced in 1963–1964. Paired with