Toyota GZ engine#1GZ-FE
{{Infobox automobile engine
| name = Toyota GZ engine
| image = 1GZ-FE.jpg
| caption = Toyota's 1GZ-FE engine installed in the GZG50 Century
| manufacturer = Toyota
| aka =
| production = 1997–2017
| predecessor = Toyota V engine (V8)
| successor = Toyota 2UR-FSE engine (V8)
| configuration = 60° V12{{cite web |url=https://dustrunnersauto.com/toyota-1gz-fe-everything-you-need-to-know/ |title=Toyota 1GZ-FE: Everything You Need To Know |first=Bryce |last=Cleveland |website=Dust Runners Automotive Journal |date=2021-08-13 |access-date=2021-10-18}}
| displacement = {{convert|4996|cc|cuin|1|abbr=on|lk=on}}
| bore = {{convert|81|mm|in|3|abbr=on|lk=on}}
| stroke = {{convert|80.8|mm|in|3|abbr=on}}
| block =
| head =
| valvetrain = DOHC
| compression = 10.5:1
| supercharger =
| turbocharger =
| turboboostpressure =
| fuelsystem = Electronic port fuel injection
| management =
| fueltype = Gasoline
| oilsystem =
| coolingsystem = Water-cooled
| idle =
| redline =
| power = {{unbulleted list
| {{convert|280|PS|kW hp PS|0|abbr=on|order=out}} (official)
| {{convert|312|PS|kW hp PS|0|abbr=on|order=out}} (actual, estimated)
}}
| specpower = {{unbulleted list
| {{convert|{{#expr:(280/4.996)round1}}|PS|kW hp PS|1|abbr=on|order=out}} per liter (official)
| {{convert|{{#expr:(312/4.996)round1}}|PS|kW hp PS|1|abbr=on|order=out}} per liter (actual, estimated)
}}
| torque = {{convert|481|Nm|lbft|abbr=on|0}}
| length =
| width =
| height =
| diameter =
| weight =
| emissions level =
| emissions control =
}}
The Toyota GZ engine family consists of a single model, the 1GZ-FE. This engine is used as the powerplant for the second generation Century limousine from 1997 to 2017.
1GZ-FE
The 1GZ-FE is a {{convert|4996|cc|L|1|abbr=on}} 48-valve DOHC V12 engine with variable valve timing (VVT-i). Bore is 81 mm and stroke is 80.8 mm, with a compression ratio of 10.5:1. The official power output advertised in Japan per the gentlemen's agreement is {{convert|280|PS|kW hp PS|0|abbr=on|order=out}} at 5,200 rpm, though it was advertised as {{convert|220|kW|hp PS|0|abbr=on}} in export markets. Peak torque of {{convert|481|Nm|0|abbr=on}} is at 4,000 rpm with over {{convert|400|Nm|0|abbr=on}} available from as little as 1200 rpm. The Electronic fuel-injection system is controlled by two ECUs, one for each bank of six cylinders. The engine is capable of running on either bank should a malfunction occur.{{cite web |url=http://toyota.jp:80/century/safety/active/ |title=トヨタ センチュリー {{!}} 安全装備 {{!}} 予防安全 |trans-title=Toyota Century Safety Equipment Preventive Safety |work=Goo-net |language=Japanese |archive-url=https://web.archive.org/web/20150508110704/http://toyota.jp/century/safety/active/ |archive-date=2015-05-08 |url-status=dead }}
In 2010 the standard engine was revised in order to meet tough fuel economy and emissions standards, reducing power slightly and peak torque to {{convert|460|Nm|0|abbr=on}} although this torque figure had been advertised in export markets since at least 2004.{{cite web |url=http://www.goo-net.com/catalog/TOYOTA/CENTURY/index.html |title=センチュリー（トヨタ）のモデル・グレード別カタログ情報 |trans-title=Century (Toyota) model· Catalog information by grade |work=Goo-net |language=Japanese |access-date=2017-10-15}}
;Applications
- 1997–2017 Toyota Century (GZG50)
- 2006–2008 Toyota Century Royal (GZG51)
1GZ-FNE
A version is available running on compressed natural gas which produces {{convert|190|kW|0|abbr=on}} and {{convert|405|Nm|0|abbr=on}}.{{cite web |url=http://www.goo-net-exchange.com/catalog/TOYOTA__CENTURY/#4/2004 |title=TOYOTA CENTURY catalog - reviews, pics, specs and prices |work=Goo-net Exchange |access-date=2017-10-15}}{{cite web |url=http://www.goo-net-exchange.com/catalog/TOYOTA__CENTURY/10017675/ |title=TOYOTA CENTURY, CNG CAR FLOOR SHIFT catalog - reviews, pics, specs and prices |work=Goo-net Exchange |access-date=2017-10-15}}
;Applications
- 2003–2004 Toyota Century
{{clear}}