The Nissan J series are straight-4 and straight-6 gasoline internal combustion engines produced by Nissan in the 1960s through the 1980s. It is similar to the BMC B-Series engine that was built in Japan under licence as the Nissan 1H before being de-stroked to become the 1.0 L Nissan C and 1.2 L Nissan E engines, but wasn't a direct copy.