2004 Porsche 911 996 Carrera Factory Gt3 Body Package on 2040-cars

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Porsche revisits the 911's dirty side with rally history film

It might not be a coincidence that there are rumors of Porsche revealing a safari version of the 911 at April's Beijing Motor Show, just as the Dakar Rally is about to begin. Adding fuel to the dusty desert fire is a just-released official video of Jeff Zwart driving the Porsche 953 that Jacky Ickx drove to victory in the 1984 edition of the race.
In the video, the seven-time Pikes Peak International Hill Climb winner talks about how he grew up with the 911; it wasn't only the car he learned to drive in, it was his choice of racecar no matter whether the course was tarmac or the dirty stuff.
You can decide for yourself if these recent events are mere coincidence while you enjoy the 953's exhaust note in the video below. If you've got the time to see the 953 during its race-conquering drive and find out what the ersatz Paris-Dakar Rally used to be, we've also included a broadcast of that 1984 race below as well. Fast-forward to 19:44 to see the Porsches cross the open dessert and 29:09 to watch one of them tackle the dunes.

Is the skill of rev matching being lost to computers?

If the ability to drive a vehicle equipped with a manual gearbox is becoming a lost art, then the skill of being able to match revs on downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. The usefulness of rev matching in street driving is limited most of the time – aside from sounding cool and impressing your friends. But out on a race track or the occasional fast, windy road, its benefits are abundantly clear. While in motion, the engine speed and wheel speed of a vehicle with a manual transmission are kept in sync when the clutch is engaged (i.e. when the clutch pedal is not being pressed down). However, when changing gear, that mechanical link is severed briefly, and the synchronization between the motor and wheels is broken. When upshifting during acceleration, this isn't much of an issue, as there's typically not a huge disparity between engine speed and wheel speed as a car accelerates. Rev-matching downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. But when slowing down and downshifting – as you might do when approaching a corner at a high rate of speed – that gap of time caused by the disengagement of the clutch from the engine causes the revs to drop. Without bringing up the revs somehow to help the engine speed match the wheel speed in the gear you're about to use, you'll typically get a sudden jolt when re-engaging the clutch as physics brings everything back into sync. That jolt can be a big problem when you're moving along swiftly, causing instability or even a loss of traction, particularly in rear-wheel-drive cars. So the point of rev matching is to blip the throttle simultaneously as you downshift gears in order to bring the engine speed to a closer match with the wheel speed before you re-engage the clutch in that lower gear, in turn providing a much smoother downshift. When braking is thrown in, you get heel-toe downshifting, which involves some dexterity to use all three pedals at the same time with just two feet – clutch in, slow the car while revving, clutch out. However, even if you're aware of heel-toe technique and the basic elements of how to perform a rev match, perfecting it to the point of making it useful can be difficult.

Porsche bringing Macan S Diesel to US instead of 4-cylinder [w/poll]

When Porsche unveiled the new Macan at the LA Auto Show, it announced two powerplants for the US market, both of them twin-turbo V6s: the Macan S equipped with 340 horsepower from its 3.0-liter engine, and the Macan Turbo with 400 horses from 3.6 liters. But those aren't the only engines Porsche will offer in its new compact crossover. Porsche is also offering the Macan S Diesel overseas with 258 hp, and reports have since indicated that a pair of four-cylinder models on their way: a 2.0-liter turbo four with 280 hp and four-pot turbodiesel of the same capacity with an as-yet undisclosed output.
Now Car and Driver is reporting that while those four-cylinder engines won't be making the transatlantic voyage to our shores, Porsche will offer the aforementioned Macan S Diesel in North America beginning in early 2015, nearly a year after the gas V6 versions arrive.
The 3.0-liter turbodiesel V6 is based on the same engine found in the Cayenne Diesel and the Audi Q5 TDI on which the Macan is based. Of course, its 248 hp is substantially less than the 340 ponies in the Macan S, but its 413 pound-feet of torque outshines not only the 339 lb-ft in the Macan S but also the 406 lb-ft in the Macan Turbo. Acceleration times, however, suggest the Macan S Diesel is still slower, with a 6.3-second run to 62 mph than neither the Macan S (5.4 sec) or Macan Turbo (4.8). The good news is that the Macan S Diesel is tipped to undercut the price of both, dropping the oil-burning crossover's MSRP below that of the $49,900 starting price for the Macan S and the $49,600 for the base Cayenne. If that C/D prediction comes to pass, that will make it the Macan S Diesel most affordable Porsche sold.