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.
| NA engine | |
|---|---|
 NA20P engine | |
| Overview | |
| Manufacturer | Nissan Machinery |
| Layout | |
| Configuration | Naturally aspirated Straight-4 |
| Displacement | 1.6–2.0 L (1,627–1,998 cc) |
| Cylinder bore | 81.5 mm (3.21 in) 86 mm (3.39 in) |
| Piston stroke | 78 mm (3.07 in) 86 mm (3.39 in) |
| Valvetrain | SOHC |
| Combustion | |
| Fuel type | Gasoline Liquefied petroleum gas (in commercial vehicles) |
| Cooling system | Water-cooled |
| Output | |
| Power output | 76–100 PS (56–74 kW) |
| Torque output | 12.8–17 kg⋅m (126–167 N⋅m; 93–123 lb⋅ft) |
| Chronology | |
| Predecessor | Z series |
NA16S
edit- Engine type: 1.6 L (1,627 cc), 81.5 mm × 78 mm (3.21 in × 3.07 in) bore and stroke, SOHC[1]
- Output: 76 PS (56 kW) at 5,000 rpm
- Torque: 12.8 kg⋅m (126 N⋅m; 93 lb⋅ft) at 3,200 rpm
Applications
edit- 1989–1995 Datsun Truck D21 73 PS (54 kW)[1]
- 1990–1995 Nissan Atlas F22 - F23
NA20P
edit- Engine type: 2.0 L (1,998 cc), 86 mm × 86 mm (3.39 in × 3.39 in) bore and stroke, SOHC, carburetted
- Output: 82 PS (60 kW) at 4,600 rpm
- Torque: 16.2 kg⋅m (159 N⋅m; 117 lb⋅ft) 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.[2]
- Output: 85 PS (63 kW) at 4,600 rpm
- Torque: 17 kg⋅m (167 N⋅m; 123 lb⋅ft) at 2,400 rpm
Applications
edit- 1991–2010 Nissan Cedric Y31
- 1993–2009 Nissan Crew K30
- 1991–1999 Nissan Gloria Y31
NA20PE
editThis fuel injected, LPG-powered variant was introduced in September 2010 and met new, stricter emissions regulations.
- Engine type: 2.0 L (1,998 cc), 86 mm × 86 mm (3.39 in × 3.39 in) bore and stroke, SOHC, multi-point fuel injection
- Output: 85 PS (63 kW) at 4,400 rpm
- Torque: 17.3 kg⋅m (170 N⋅m; 125 lb⋅ft) at 2,400 rpm
Applications
edit- 2010–2014 Nissan Cedric Y31
NA20S
edit- Engine type: 2.0 L (1,998 cc), 86 mm × 86 mm (3.39 in × 3.39 in) bore and stroke, SOHC[1]
- Typical output: 100 PS (74 kW) at 5,000 rpm
- Torque: 17 kg⋅m (167 N⋅m; 123 lb⋅ft) at 3,000 rpm
Applications
edit- 1989-1999 Datsun Truck D21, 91 PS (67 kW) at 5,000 rpm[1]
- 1990–1999 Nissan Atlas F22 - F23
- 1990–1999 Nissan Atlas H40
- 1990–1999 Nissan Homy / Nissan Caravan E24
References
edit- ^ a b c d Datsun: ニューパワーNA20、NA16新型ガソリンエンジンシリーズ搭載 (Catalog) [Datsun: New Power with new NA20/NA16 gasoline engine series] (in Japanese), Nissan, March 1990, p. 15, C1171-0033AGK
- ^ "セドリック／グロリア セダンを一部改良" [Some improvements to Cedric/Gloria sedan] (Press release) (in Japanese). Nissan Motor Corporation. 1998-06-15. Archived from the original on 2023-02-08.