Porsche 911 GT3: Difference between revisions

Porsche also announced a variant of the 991 GT3 Cup car for the [[United SportsCar Championship]] known as the 911 GT America.<ref>{{Cite web |url=http://press.porsche.com/motorsport/news/release.php?id=47 |title=Porsche 911 GT America–First New Car Built for 2014 United Sports Car Racing Series |publisher=Porsche |access-date=6 November 2013 |archive-url=https://web.archive.org/web/20140201211639/http://press.porsche.com/motorsport/news/release.php?id=47 |archive-date=1 February 2014 |url-status=dead }}</ref> The car is homologated exclusively for the Grand-Touring Daytona category of the series. Upgrades over the regular Cup car include improved aerodynamics, a bigger 4.0L flat-six engine, a new gearbox, a different safety cell, new brakes and reliability upgrades for endurance racing.

 

In May 2015, Porsche announced the 991 GT3 R, a customer race car designed to compete in [[Group GT3]] from 2016 onwards. The car is homologated based on the 991 GT3 RS road car, and uses the production car's 4.0-litre flat-six rated at around {{Convert|373|kW|PS hp|0|abbr=on}}, running through a six-speed paddle-shift sequential gearbox. The GT3 R features a double-bubble roof, and a wheelbase which had been lengthened by 8.3&nbsp;cm. Engineers also "significantly optimised" the centre of gravity position versus the old R, using carbon-fibre composite material (CFRP) for the roof, front cover and fairing, wheel arches, doors, side and tail sections as well as the rear cover. All windows – and for the first time ever, the windscreen – are made from polycarbonate to cut weight. Race car essentials such as an integrated (welded) roll cage according to FIA Appendix J, safety fuel cell (approximately 120 litres, with fuel cut off safety valve in accordance with FIA regulations), removable roof escape hatch and an air jack system are present. The weight is {{Convert|1220|kg|lb|abbr=on}}.