The Nissan NA family of straight-four engines is a series of engines manufactured by Nissan (Nissan Machinery). It is the replacement of the Z series, on which its design is based, and is mostly used in commercial vehicles due to its use of Liquefied petroleum gas for fuel on engines with a "P" suffix code. It is entirely unrelated to the 1950s NAK engine.
NA16S Engine type: , bore and stroke, SOHC Output: at 5,000 rpm Torque: at 3,200 rpm
Applications 1989–1995 Datsun Truck D21 1990–1995 Nissan Atlas F22 - F23
NA20P Engine type: , bore and stroke, SOHC, carburetted Output: at 4,600 rpm Torque: at 2,400 rpm
In 1998 the NA20P was updated, with redesigned combustion chambers which increased power and torque while lowering fuel consumption. A new catalyst reduced emissions, making it the first LPG-engined passenger car to be designated a low-pollution vehicle in several Japanese cities and prefectures. Output: at 4,600 rpm Torque: at 2,400 rpm
Applications 1991–2010 Nissan Cedric Y31 1993–2009 Nissan Crew K30 1991–1999 Nissan Gloria Y31
NA20PE This fuel injected, LPG-powered variant was introduced in September 2010 and met new, stricter emissions regulations. Engine type: , bore and stroke, SOHC, multi-point fuel injection Output: at 4,400 rpm Torque: at 2,400 rpm
Applications 2010–2014 Nissan Cedric Y31
NA20S Engine type: , bore and stroke, SOHC Typical output: at 5,000 rpm Torque: at 3,000 rpm
Applications 1989-1999 Datsun Truck D21, at 5,000 rpm 1990–1999 Nissan Atlas F22 - F23 1990–1999 Nissan Atlas H40 1990–1999 Nissan Homy / Nissan Caravan E24
References