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The story of two Felbermayr 911 GT3 RSRs

Porsche 911 GT3 RSR, chassis no. WP0ZZZ99Z9S799918, Donington 2017

Porsche 911 GT3 RSR
Donington Park Circuit, 11 April 2017: Porsche 911 GT3 RSR (chassis #WP0ZZZ99Z9S799918) is off-loaded

It was a clear day in April, typical of those late winter/early spring days when the weather was trying to impress by showing signs of warmth, but not really succeeding. My assignment that day at Donington Park, was to attend the delivery, off-loading and testing of two well-used, and successful GT race cars. The subjects of my attention that day were the 2007 model Porsche 911 RSR (997.1) and the 2009 model Porsche 911 RSR (997.2), both cars sponsored by the Felbermayr company in period, and familiar to many.

Porsche 911 GT3 RSR
Donington Park Circuit, 11 April 2017: Porsche 911 GT3 RSR (chassis #WP0ZZZ99Z7S799937) waits in the pit lane

Technical brief (chassis #799937)

The Type 997 GT3 RSR was originally introduced in GTE spec in 2007, replacing the 3.6-litre 996 GT3 RSR. The 3.8-litre engine of the new 2007 model GT3 RSR was based on the power unit fitted to the roadgoing GT3 RS, but was specially modified for motorsport use, and confusingly, the GT3 RSR ran in the GT2 class in period. The new 997 GT3 RSR was aerodynamically more efficient than its predecessor, and as a result, wider wheels were required to handle the greater performance potential. A much improved 6-speed sequential gearbox was installed.

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