The BMC A-Series is a small displacement Inline 4 Pushrod engine, and was launched in 1952 in the Morris Minor and Austin A30. It is however probably best known for being the engine used an the original BMC Mini, launched in 1959. The engine remained in production until the death of the original Mini in 2000, making it one of the longest lived and most common engines in the world. The engine was even licensed by Nissan, and used as the basis for many of their engines of the time.
During it’s long life, the A-Series survived through the various changes in the british motor industry, with British Motor Company becoming British Motor Holdings, then British Leyland, then Austin Rover, then Rover Group, and survived the various ownership changes each of these had. It even saw limited production in the early days of MG Rover after the BMW selloff, but this was only to complete production of a limited number of original Minis, and had by that point been all but completely replaced by the Rover K-Series. Because of this long and varied life, the engine was available in a large range of setups, and was used in everything from small city cars, to family saloons, and even spawned turbocharged versions.
The version I start with here is the original 848cc A-Series used in the BMC Mini, albeit I was aiming for the slightly revised version used from 1969 in the Mini 850, which later became the Austin Mini City. Results were good, with power being a tiny bit too high, and torque being spot on.
BMC A Series 848Rev0.lua (36.7 KB)
As this engine was offered in such a massive range of tunes, I will update this post occassionally with other versions.