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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.

Two rare Alpina BMWs given the Petrolicious treatment

Alpina is getting more and more ink because of because of that rolling cannonade known as the B7 and its closer ties with BMW. The company's tuning business dates to 1962 when Burkard Bovensiepen began fiddling with Weber carburetors, then his company began racing in 1968 and was eventually certified as an automaker in 1983.
Two of its rarer specimens from those early years have gotten a glance from the folks at Petrolicious: the E24 B10 and E24 B7S. Based on the BMW 6 Series, the Alpina versions made one of the most special coupes from the Eighties even more so. According to the video, there were only 44 B10s made, and the turbocharged, 333-horsepower B7S - this was in a luxury coupe in 1982, mind you - saw only 33 examples produced.
You won't be sorry to find out more about them - and see how they run - in the Petrolicious video below.

Car and Driver shows off awesome 1960s ads

Someone must have recently rediscovered the keys to the archives at Car and Driver, and the access has been put to good use. Following last month's fantastic look at automotive ads from the '50s, there's now a new gallery running from March 1960 through December 1969. This collection provides a great overview of a decade full of iconic cars. If you're a fan of Carroll Shelby, particularly his Mustangs, then there's a lot to love among this group. One ad from July 1965 aimed to sell the GT350, but with an ocean of text and a tiny picture, it probably could've used a once-over by Don Draper's team. By December '65, the copywriters ironed out the problems with a spot proclaiming boldly "Shelby GT350 is 'Son of Cobra.'" The company offered some great accessories, too. For those into European motoring, there's a humorous attempt to sell the Alfa Romeo Giulia as both a racecar and family hauler. Toyota also boasts about the winning record for the 2000GT. Among the best text comes from BMW for lines like: "What's BMW got? The most advanced high-performance engine in any production car, for a cruising speed of 100 mph." Of course, Volkswagen's famous "Lemon" ad for the Beetle also gets its due here. Separately, each of these ads is fascinating, but taken together they tell the story of a great decade of motoring. Go give them all a read at Car and Driver. Related Video: News Source: Car and DriverImage Credit: GM Heritage Center Marketing/Advertising Read This Alfa Romeo BMW Ford Toyota Volkswagen shelby alfa romeo giulia shelby gt350 toyota 2000gt