Toyota RV10 engine
{{Infobox automobile engine
|image=Toyota TS010 RV10 engine 2014 WEC Fuji.jpg
|name=Toyota RV10 engine
|configuration=72° V10
|manufacturer=Toyota
|production=1991–1993
|fueltype=Gasoline
|fuelsystem=Electronic fuel injection
|coolingsystem=Water-cooled
|displacement = {{Convert|3495|cc|L|1|order=flip|abbr=on}}
|bore = {{convert|86|mm|in|2|abbr=on}}
|stroke = {{convert|60.2|mm|in|2|lk=on|abbr=on}}
|valvetrain=50-valve (five-valves per cylinder), DOHC
|aspiration=naturally-aspirated
|power={{Convert|600-750|hp|kW PS|0|abbr=on}}
|torque={{Convert|330-400|lb.ft|N.m|0|abbr=on}}
|oilsystem=Dry sump
|lubrication=Dry sump
| predecessor =
| successor = Toyota R32V/R36V engine
}}
The Toyota RV10 engine is a 72-degree, four-stroke, naturally-aspirated, V10 racing engine, designed, developed and produced by Toyota, for their Toyota TS010 Group C sports prototype race car, between 1991 and 1993.{{Cite web|url=https://www.ultimatecarpage.com/car/3792/Toyota-TS010.html|title=1991 - 1993 Toyota TS010 - Images, Specifications and Information|website=Ultimatecarpage.com|access-date=15 November 2021}}{{Cite web|url=http://www.dailysportscar.com/2012/12/11/a-toyota-ts010-restored.html|title=A Toyota TS010 Restored|website=Dailysportscar.com|access-date=15 November 2021}}{{Cite web|url=https://www.supercars.net/blog/1993-toyota-ts10-le-mans/|title=1993 Toyota TS10 Le Mans | Toyota|website=Supercars.net|date=23 April 2016|access-date=15 November 2021}}
Background
Due to rule changes in the World Sportscar Championship for 1992, Toyota was forced to replace their previous series of Group C engines, dubbed the R32-V and R36-V, which were 3.6L twin-turbocharged V8 engine units. The new rules required a 3.5L naturally aspirated engine to be used, similar to Formula One engine regulations at the time. Thus, in 1991, Toyota completed its RV10 engines and began early testing.{{Cite web|url=https://toyotagazooracing.com/wec/special/2019-2020/lemans-challenging-history-03/|title=1992-1994 One step away from victory. TS010 finally gets a podium | 35 years of TOYOTA at Le Mans ~Looking back over a 35-year history of challenges~ | WEC|website=Toyotagazooracing.com|access-date=15 November 2021}}{{Cite web|url=https://media.toyota.co.uk/1992-toyota-ts010-group-c-sports-car/|title=1992 Toyota TS010 Group C Sports Car|date=25 June 2004|website=Media.toyota.co.uk|access-date=15 November 2021}}
Due to the change in engines, a whole new chassis was also necessary in order to better handle the new V10. Former Tom Walkinshaw Racing designer Tony Southgate was in charge of designing the car that became the TS010, featuring a more aerodynamic and longer body than the C-V series of sportscars.{{Cite web|url=https://global.toyota/en/detail/7832832|title=TOYOTA COMPLETES NEW GROUP C CAR | Toyota Motor Corporation Official Global Website|website=Global.toyota|access-date=15 November 2021}}{{Cite web|url=http://tech-racingcars.wikidot.com/toyota-ts010|title=Toyota TS010 group C (1991) - Racing Cars|website=Tech-racingcars.wikidot.com|access-date=15 November 2021}}{{Cite web|url=https://www.topspeed.com/cars/car-news/toyota-ts010-was-a-group-c-car-that-could-break-your-ribs/|title=Toyota TS010 Was A Group C Car That Could Break Your Ribs @ Top Speed|date=20 May 2021|website=TopSpeed.com|access-date=15 November 2021}}{{cite web|url=https://www.carthrottle.com/post/nz9y64v/|title=Almost There - Toyota TS010 Group C & GT-One|website=Carthrottle.com|access-date=15 November 2021}}{{Cite web|url=http://www.dailysportscar.com/2020/05/28/group-c-tales-andy-wallace-on-the-toyota-ts010.html|title=Group C Tales: Andy Wallace On The Toyota TS010 | dailysportscar.com|website=Dailysportscar.com|access-date=15 November 2021}}{{Cite web|url=https://jalopnik.com/the-mightiest-four-cylinder-toyota-ever-made-1821570638|title=The Mightiest Four-Cylinder Toyota Ever Made|website=Jalopnik.com|date=25 December 2017 |access-date=15 November 2021}}{{Cite web|url=https://www.ultimatecarpage.com//spec/3792/Toyota-TS010.html|title=1991 - 1993 Toyota TS010 Specifications|website=Ultimatecarpage.com|access-date=15 November 2021}}