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Audi Sport Joest had secured their first WEC victory since last May for it to be taken away post-race as they excluded for a technical infringement which hands Porsche an unexpected win at Silverstone.

Update:
Over six hours after the chequered flag was waved it was confirmed in post-race scrutineering the #7 Audi was not in compliance with article 3.5.6 a3 of the LMP1 Technical Regulations - thickness of the front skid block - and the Stewards opted to exclude the car from the race.

The outcome change gifts the #2 Porsche of Romain Dumas, Neel Jani and Marc Lieb the win and maximum race points from the opening round of WEC, with #6 Toyota jumping to second place. The LMP1 privateer squad of #13 Rebellion R-One has been handed a maiden overall race rostrum finish in third.

LMP1

Marcel F?ssler, Andr? Lotterer and Benoit Tr?luyer took the International Trophy at a sunny, but cool Silverstone, heading the #2 Porsche (Romain Dumas/Marc Lieb/Neel Jani) by 46.065s after 194 laps, F?ssler cruised to the flag in the #7 Audi R18; however the gap was rendered much larger than expected following an extra pitstop for the #2 car in the final hour.

Mike Conway, Kamui Kobayshi and St?phane Srrazin gave the new Toyota TS050 the final podium spot, albeit one lap adrift of the German marques.

Starting from pole, the #7 entry led for the first half-hour and built a 2.5s advantage, until a charging Mark Webber took the top spot exiting Abbey in the #1 Porsche.

Lotterer battled with his Audi stablemate Oliver Jarvis, but lost close to 20s to the leader while he pulled away from the #8 Audi. Lotterer handed the reigns of the #7 to Tr?luyer at 90 minutes; however the Frenchman marked the beginning of his stint with a clumsy spin at Vale on lap 58, dropping hi to 3rd behind the #2 Porsche's Neel Jani.

Having replaced Webber, Brendon Hartley stretched the lead to 50s for the #1 Porsche come the one-third mark, however an overly ambitious move by the Kiwi while lapping the #86 GTE-Am of Michael Wainwright at Abbey tipped both into a spectacular crash that briefly saw the 919 Hybrid tip over on its side.

With Hartley out, Lieb replaced Jani in the pits, taking the lead under full course yellow with Tr?luyer 2nd, some 13s adrift. Tr?luyer ate into Lieb's advantage under FCY, eventually passing the Porsche for the lead at the exit of Copse on lap 75.

Tr?luyer drew a 7s gap over Lieb through his first stint; however that became naught when a mid-race safety car to clear debris from Kazuki Nakajima's (#5 Toyota) blown tyre and bodywork closed the field up again. After replacing Lieb during the SC period, Romain Dumas held close to Tr?luyer's Audi, until lap 120 when the #2 Porsche was tapped into a half-spin by Marino Franchitti's #67 Ganassi Ford GT, costing Dumas ten seconds.

Pitting on lap 128, Marcel F?ssler took the #7 Audi to the flag, yet while never issuing a direct threat, the #2 Porsche - now with Jani back at the wheel - maintained a presence some 14-15s adrift of F?ssler.

The length of the safety car and the earlier full course yellow, ensured late stops for the prototype front-runners; however a right front puncture for Dumas following what was to be his penultimate stop most certainly took the #2 Porsche out of the game for the win.

With only a splash-and-dash for fuel left, F?ssler stroked the R18 home to win the International Trophy, with Jani a cosy 2nd ahead of Kaboyashi in the #6 Toyota.

However the post-race penalty relegates the Audi and promotes the rest of the field up a place form the original finishing positions.

Although a relatively successful day for Toyota, the trio in the #6 machine were never quite on the pace of the Audi's and Porsche's and appeared to suffer when double-stinting their Michelin tyres.

Both Rebellion machines finished in the top five, with the #13 (Alexandre Imperatori/Dominik Kraihamer/Math?o Tuscher) finishing eleven laps off the lead, but two laps ahead of the counterparts in the #12 car (Nico Prost/Nelson Piquet Jr./Nick Heidfeld).

Nakajima's mishap with the blown right rear tyre cost the #5 Toyota some 42 minutes in the pitlane, leaving the former championship team 24 laps adrift in 6th spot. The day ended early for Lucas di Grassi, whose #8 Audi suffered a hybrid failure after 69 laps of running.

LMP2

The #43 RGR Sport by Morand entry won the LMP2 class by half-a-minute ahead of #31 Extreme Speed Motorsport Ligier. Filipe Albuquerque took the Mexican entry home following a quick and stable run alongside Bruno Senna and the much-improved Ricardo Gonzalez.

The increasingly impressive Pipo Derani took the fight to the class, with the Brazilian youngster leading the class early on; however the Extreme Speed machine lost time and positions when their next pilot Chris Cumming spun across Vale in a botched attempt to lap one of the AF Corse Ferrari's - thereafter the Canadian struggled to hold the pace of the LMP2 field.

A fast stint from Ryan Dalziel brought the Extreme Speed team back into play, before Dalziel handed back to Derani whose passes on Nathana?l Berthon (#26 G-Drive) and Nico Lapierre (#36 Signatech Alpine) rewarded them with 2nd spot.

Berthon, Ren? Rast and Roman Rusinov took the final LMP2 podium place for the #26 G-Drive, with the #36 Signatech securing 4th spot. Manor Racing ended the race 6th and 11th in their first WEC event since a number of the group left Formula One.

GTE-Pro

AF Corse dominated the GTE-Pro category from start-to-finish, with the #71 entry (Sam Bird/Davide Rigon) leading almost every lap for the six hours. Indeed the pair only lost the lead when in the pits and even then their loss was brief.

Gimmi Bruni and James Calado came home 2nd in GTE-Pro in the other AF Corse, although circumstances in qualifying meant they had started at the back and then had to take a 3-minute stop-and-go penalty for changing an engine overnight. Nicki Thiim dropped behind the Bruni late in the race, with the Dane accepting 3rd alongside teammates Darren Turner and Marco S?rensen.

Both Ganassi Ford GT's finished the race in 4th and 5th places, albeit two laps from the winning AF Corse, with the #67 (Franchitti/Andy Priaulx/Harry Ticknell) heading the #66 (Billy Johnson/Stefan M?cke/Olivier Pla).

GTE-Am

AF Corse also won the GTE-Am class. Piloted by Emmanuel Collard, Fran?ois Perrodo and Rui Aguas, the #83 Ferrari-powered machine beat the #98 Aston Martin Vantage (Paul Dalla Lana/Pedri Lamy/Mathias Lauda) to the flag by one lap, with the #50 Larbre Competition C7 Corvette (Yutaka Yamagishi/Pierre Ragues/Paolo Ruberti) completing the GTE-Am podium.

By Leigh O'Gorman

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