Anyone who thinks the B doesn't belong in this series, consider this fact: the Hindustan Motors Ambassador, perhaps the world's most workhorsey car since the Model T, was powered by the BMC B until the early 90s. Starting in 1954, if it was British and had wheels you'd have a good chance of seeing this engine when you popped the bonnet. Why, even the Nash Metropolitan had B power! Once they went to a five-bearing crank, the B was actually much more dependable than most of the cars it powered. We say it's a workhorse! Engine photo credit: Stephen Foskett [Wikipedia]