Currently reading: Porsche 911 GT3 RS 4.2 could get 518bhp from enlarged flat six
Spy shots back up suspicion that a more potent RS is on the way; RUF SCR demonstrates 4.2 potential

Porsche is reportedly developing a more powerful version of the 911 GT3 RS, with a bored-out version of its rear-mounted engine rumoured to be capable of producing 518bhp.

The 4.0-litre engine of the current RS runs a 102x81.5mm bore and stroke, making it the largest six-cylinder boxer to make production. But insiders are now claiming the engine in a more potent RS would be 4.2 litres in capacity, pushing the engine’s stroke up to 85.1mm.

RUF has already demonstrated the flat six's potential for a larger capacity with its 964 911-based SCR 4.2, which was first demonstrated at this year’s Geneva motor show. That car features a water-cooled 4.2-litre flat six that produces 518bhp at 8370rpm and 369lb ft of torque at 5820rpm.

This is substantially more than the 4.0-litre engine of the current RS, which offers 493bhp at 8250rpm and 339lb ft of torque at 6250rpm.

911 Rs42 006

Insiders say the RUF unit previews what’s to come from Porsche, and a more potent GT3 RS would seem like the most likely candidate to run such an engine.

Spy photographers have recently spotted a development GT3 RS in Germany running with different bumpers, enlarged air intakes and a new exhaust system. It featured a longer rear diffuser that extended further under the car, similar to the one featured on the 911 R, suggesting it has been designed to produce more downforce than the current RS.

When asked if this car was a 4.2-litre GT3 RS, Porsche declined to comment, instead saying that it is always testing cars with different specifications as part of its ongoing development processes.

But Porsche is well known for launching more powerful versions of existing cars through a model’s life cycle, and a facelifted version of the current 911 GT3 is already on its way. The next-generation 911 isn’t due to be released until 2018, so it’s certainly plausible for Porsche to produce an even faster GT3 RS.

It’s not like it wouldn’t sell well…

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madmac 20 April 2016

Wrong! this is a GT2,with the

Wrong! this is a GT2,with the lateral exhausts like the last one,it is not any GT3 variation! DUH!
Lessis More 19 April 2016


I am also mightily relieved for all the same reasons :-)
R Cranium 19 April 2016


Nearly a week had passed since the last Porsche advertorial was featured in Autocar and I was becoming a tad concerned about the lack of new developments from Zuffenhausen.

Thankfully, I can rest easy in the knowledge that they may launch a new model which, even should I wish to purchase, won't be made available to the great unwashed such as I...

nick644uk66 19 April 2016

also unavailable

to the great washed and blow dried. Only available to speculators VW are doing a great job on the Porsche brand. I've had 3 new 911's including a GT3. Never again. Saving up for RUF with a good old fashion manual gearbox. At least I'm guaranteed to have one if I put a deposit down. Bet RUF can't believe their luck at how VW are running their sales and marketing.