Nissan NA engine#NA20P
{{Infobox automobile engine
|name= NA engine
|image=Nissan NA20P.jpg
|caption = NA20P engine
|manufacturer=Nissan Machinery
|predecessor=Z series
|configuration=Naturally aspirated Straight-4
|valvetrain=SOHC
|fueltype=Gasoline
Liquefied petroleum gas (in commercial vehicles)
|coolingsystem=Water-cooled
|displacement={{convert|1627-1998|cc|L|1|abbr=on|disp=flip}}
|bore={{convert|81.5|mm|2|abbr=on}}
{{convert|86|mm|2|abbr=on}}
|stroke={{convert|78|mm|2|abbr=on}}
{{convert|86|mm|2|abbr=on}}
|power={{convert|76-100|PS|kW|0|abbr=on}}
|torque={{convert|12.8-17|kgm|Nm lbft|0|abbr=on}}
}}
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.
NA16S
- Engine type: {{convert|1627|cc|L|1|abbr=on|disp=flip}}, {{convert|81.5x78|mm|2|abbr=on}} bore and stroke, SOHC{{citation | language = Japanese | title = 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) |trans-title=Datsun: New Power with new NA20/NA16 gasoline engine series | publisher = Nissan |date=March 1990 | page = 15 | id = C1171-0033AGK }}
- Output: {{convert|76|PS|kW|0|abbr=on}} at 5,000 rpm
- Torque: {{convert|12.8|kgm|Nm lbft|0|abbr=on}} at 3,200 rpm
=Applications=
- 1989–1995 Datsun Truck D21 {{convert|73|PS|0|abbr=on}}
- 1990–1995 Nissan Atlas F22 - F23
NA20P
- Engine type: {{convert|1998|cc|L|1|abbr=on|disp=flip}}, {{convert|86x86|mm|2|abbr=on}} bore and stroke, SOHC, carburetted
- Output: {{convert|82|PS|kW|0|abbr=on}} at 4,600 rpm
- Torque: {{convert|16.2|kgm|Nm lbft|0|abbr=on}} 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.{{cite press release | url = https://global.nissannews.com/ja-JP/releases/release-ea2ada92a067df51a78ce3a3b26798e1-19980615-02-j | archive-url = https://web.archive.org/web/20230208064131/https://global.nissannews.com/ja-JP/releases/release-ea2ada92a067df51a78ce3a3b26798e1-19980615-02-j | archive-date = 2023-02-08 | title = セドリック／グロリア セダンを一部改良 | trans-title = Some improvements to Cedric/Gloria sedan | language = ja | publisher = Nissan Motor Corporation | date = 1998-06-15 }}
- Output: {{convert|85|PS|kW|0|abbr=on}} at 4,600 rpm
- Torque: {{convert|17|kgm|Nm lbft|0|abbr=on}} 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: {{convert|1998|cc|L|1|abbr=on|disp=flip}}, {{convert|86x86|mm|2|abbr=on}} bore and stroke, SOHC, multi-point fuel injection
- Output: {{convert|85|PS|kW|0|abbr=on}} at 4,400 rpm
- Torque: {{convert|17.3|kgm|Nm lbft|0|abbr=on}} at 2,400 rpm
=Applications=
- 2010–2014 Nissan Cedric Y31
NA20S
=Applications=
- 1989-1999 Datsun Truck D21, {{convert|91|PS|kW|0|abbr=on}} at 5,000 rpm
- 1990–1999 Nissan Atlas F22 - F23
- 1990–1999 Nissan Atlas H40
- 1990–1999 Nissan Homy / Nissan Caravan E24