By on May 1, 2018

If you want a good example of evolution, you don’t need to venture all the way to the Galapagos Islands. Simply look at the lineage of the Porsche 911 for confirmation of how a species evolves and adapts over time.

Not long ago, the mighty 911 Turbo was the only example of the breed with a snail attached to its rear-mounted engine. Now, with turbos pervading nearly the entire line, it seemed as if naturally aspirated 911s would disappear like the dodo bird. However, we’re now hearing rumours the GT3 may retain its non-turbo status … with a flat-six that screams its way to 9,500 rpm.

Speaking to Aussie mag Which Car, one Thomas Mader, Porsche’s lead man on GT road car engines (and I thought *my * job was cool), explained he does not think the current 4.0-liter six will disappear before suggesting an increase in piston stroke and a bump of 500 rpm on the redline.

Porsche’s engine man also said the company will “look at the things we have on track to put in the street car.” While we’re speculating, let’s also assume this statement alludes to the 4.0-liter racing engine that’s mounted amidships in the 911 RSR. That mill revs to 9,500 rpm and sounds damned good doing it. Naturally, a roadgoing engine is expected to last significantly longer than a race motor, so any adaptation of the RSR’s 4.0-liter would undoubtedly give a few concessions to durability.

Doing such modifications to the engine would also require an examination of the rest of the car. From the What Car story: “For [the new GT3 RS], [9,000 rpm] is matched perfect to the whole system. Now I have to speak to my colleagues and we will have a car, and we will have 9,500 revs, and matched to that all to the gearbox, then we will work on that technical side, which should be possible … but [although] we have that engine for the racetrack, the lifetime aspect for road car is different.”

The current GT3 spins up to a 9,000 rpm redline, making 520 pavement-pummeling horsepower. Porsche has been busy touting its lap time of 6:56.4 set at the Nürburgring-Nordschleife circuit in Germany. Those GT3 owners without carte blanche to the Green Hell can console themselves with 0-60 mph blasts in 3.2 seconds and a 312 km/h top speed (that metric measure sounds better than 195 mph).

As evolution has taught us, the hardiest of creatures adapt and change to their environments in order to survive. The naturally-aspirated 911 has been around since 1963. We doubt it is going away any time soon.

[Images: Porsche]

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10 Comments on “Next Porsche 911 GT3 Could Spin to 9,500 RPM...”


  • avatar
    ttacgreg

    Increase the stroke and the RPM? I always thought that short stroke was better for high RPM. Something to do with piston speed.

    • 0 avatar
      jhefner

      Yes, a shorter piston stroke reduces the maximum piston speed. Increasing both will increase the stress on the piston rod even more; so an even beefier piston rod will be required.

      It will also require a larger crank disk; with the resulting increase in stresses in the disk.

  • avatar
    healthy skeptic

    Just electrify already, Porsche.

  • avatar
    soberD

    If you’re looking for a car with investment potential.

    When everything on the road is a glorified golf cart this will be effectively priceless.

    • 0 avatar
      mcs

      The trouble is that it won’t be able to keep up with the glorified golf carts. Sure, as a collector’s item it will have value, but it won’t keep up with an electric. Porsche is testing its EV platform on the ring, so you won’t have the overheating issues you’ve seen with EVs in the past and you will be able to take a Porsche EV to the track.

      • 0 avatar
        ttacgreg

        Just as in jet engine’s dull roar vs the former complex sounds of the old radial piston engined propeller aircraft, just as in the monotonous hum of a diesel electric locomotive vs the syncopated huffing and chuffing of steam locomotives, so too will the pleasingly complex sounds of reciprocating vehicle motors be replaced with the absolutely soulless silent electric motors.

        • 0 avatar
          jhefner

          “Dull roar”? Surely, you have not stood next to an early jet engine, a military jet engine; or even worst, a Rolls Royce turboprop.

          Loudest award goes to the Republic XF-84H Thunderscreech; on the ground “run ups”, the prototypes could reportedly be heard 25 miles (40 km) away. The aircraft was notorious for inducing severe nausea and headaches among ground crews.[11] In one report, a Republic engineer suffered a seizure after close range exposure to the shock waves emanating from a powered-up XF-84H.

          https://en.wikipedia.org/wiki/Republic_XF-84H_Thunderscreech

          • 0 avatar
            ttacgreg

            That was a reference to current jetliners. Older jet engines had some personality. I remember DC-10’s motors making a sort of a buzz saw sound when taking off and gaining cruising altitude. Early jetliners were crazy thunderous as well, but 50’s era airliners with four propellers driven by multi cylinder radial piston motors really are a lost pleasing sonic feature from my youth.

  • avatar
    dal20402

    A stroker flat six with that redline will result in greater than F1 piston speeds. I hope for the buyer’s sake there’s good metallurgy.

  • avatar
    05lgt

    312 km/h top speed (that metric measure sounds better than 195 mph)

    I’d take the extra .6% and want mine to go 195MPH.


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