Originally Posted by NorCal DC4
The B20A started out in 1988, in the 3rd Gen Prelude.
It actually started somewhere in the 84-86 range, I know the (JDM) Accord version was availible in '86, if not before. It was somewhat different then the US B20A.
I have also heard a couple references to an early carburated B18A, but no solid proof.