The Nissan H series of automobile engines is an evolution of the Nissan "R" engine which was based on the 1.5-liter, three-main bearing "G" engine used in the 1960s. Both inline-four and inline-six versions were produced. It is a pushrod OHV design with iron block, early models with an iron head, later models with aluminum head. Versions of this motor have been used in many Nissan autos and forklifts, well into the eighties and a version called H20II is still in production today. The SD diesels are based on this series of motors (bore spacing and basic block layout) Inline-4 1H The 1H is not related to the later H engines. It was also an all-iron, OHV engine, but this was a licensed BMC (Austin) B engine. With a bore and stroke of it displaced , power was at 4,400 rpm in 1956, but this increased to in August 1958. The license agreement terminated in the late 1950s and the Nissan G engine was a more compact replacement, which in turn became replaced by the (below) Nissan H engines. The 1H would also be de-stroked from 89mm to 59mm to become the 1.0 L (990 cc) to create the Nissan C engine at the suggestion of former Willys-Overland engineer Donald Stone. Applications: 1954-1959 Nissan Austin 1956-1960 Nissan Junior B40/42 H The basic H is a engine produced from 1962 for Nissan's Cedric. Bore and stroke was . The 8.0:1 compression version produced and , while a high-compression engine (8.5:1) produced and . Applications: 1962 Nissan Cedric 31 (high-compression) 1962-1965 Nissan Junior 40 1962-1965 Nissan Caball C141 1962-1966 Nissan Echo GC141 H20 The H20 is the most-common member of the family. Displacing thanks to a larger bore, H20 engines produced around and . Applications: 1965-1971 Nissan Cedric 130 1966-1970 Nissan Junior 41 1966-1967 Nissan Caball C142 1966-1972 Nissan Clipper T65 1967-1976 Nissan Caball C240 1971-1975 Nissan Cedric 230 1971-1975 Nissan Junior 140 1975-1982 Nissan Junior 141 1976-1979 Nissan Cedric 330 1979-1983 Nissan Cedric 430 1970s Yue Loong Cedric 803 ( at 4,800 rpm) Nissan Caravan/Homy 1980-1982 Nissan Urvan Also N230S, T40, forklifts and other machinery H20P The H20P is the LPG-powered version of the H20. Applications: 1976-1979 Nissan Cedric 330 1975-1979 Nissan Gloria 330 H25 The H25 was developed as a high-output version of the H20. This engine was used in forklifts. bore x stroke: . compression ratio 8.7:1 maximum output