2008 Porsche 911 Turbo Conv't Awd!! 6-spd Nav Chrono-pkg Bose Xenon Blk-softtop! on 2040-cars

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Jay Leno takes an in-depth look at a 1964 Porsche 356C restomod

Look nearly anywhere at Dr. Anand Rajani's 1964 Porsche 356C, even the engine, and you would never realize that it boasts around 50 percent more power than stock. There's no sign of any other mods to make the drive a bit more modern, either, but they're there. The car's invisible upgrades result in an amazing transformation of a car that started out pretty great to begin with, and Jay Leno can't seem to get enough of driving this beautiful, gray coupe with restorer John Willhoit. Before going for a drive, Leno takes a deep dive into the details of this Porsche's modifications, particularly of its engine. The result of all the work is a mill that looks visually stock but actually boasts a significant jump in displacement. Willhoit admits this is particular one is a fairly conservative build but output still reaches 145 horsepower and 145 pound-feet of torque. If you're worried that Jay's CNBC show might have a detrimental effect on the quality of the Jay Leno's Garage YouTube video series, then here's your answer. For vintage Porsche fans interested in the nuts and bolts of making them even better, it's hard to imagine Leno making a better clip than this one.

Porsche Panamera Turbo S vs Ariel Atom Supercharged in unlikely drag battle

David versus Goliath battles are always an enticing proposition, because they offer the chance to watch scrappy underdogs take on their bigger rivals. Evo has set up just such a battle with its latest drag race between the minimalist Ariel Atom 3.5 Supercharged (Ariel Atom 3 pictured below) and the plush Porsche Panamera Turbo S.
The two cars couldn't be more different. The Atom personifies Lotus founder Colin Chapman's well-known axiom: "Simplify, then add lightness." Most of the car doesn't even have a body; it's just an exposed frame with a 310 horsepower supercharged Honda four-cylinder mounted behind the driver. On the other side, there's the Panamera Turbo S. In the latest version, it packs 570 hp and 553 pound-feet from its 4.8-liter twin-turbo V8 and it features all-wheel drive. Of course, all of that comes with a significant weight penalty.
Off the line, the differences are even more apparent. The Atom doesn't have any of the Porsche's technological wizardry, so launching it challenges the driver to build the revs and let out the clutch just right. The car screams like a banshee as it goes, though. The Porsche is the exact opposite. Its launch control system lets the driver hold down the brake, get on the throttle and accelerate away in just the right way.

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.