1987 Porsche 944 S Coupe 2-door 2.5l, Major Engine Repair Needed on 2040-cars

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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.

Favorite vehicles of 2017

The Autoblog staff has driven a lot of vehicles in 2017. This video showcases our favorite vehicles from this year, along with some thoughts on why they made the list. Wanna read more head over to https://www.autoblog.com/photos/best-drivers-cars-2017/ Aston Martin Audi Ford Jeep Lexus Porsche Autoblog Minute Videos Original Video porsche macan lexus lc 500 macan wrangler r8 Arts and Entertainment

Porsche launches classic racing program with restored 917k

Porsches is launching a historic racing program to support private owners of its competition classics. The program will offer customers support restoring and repairing their racecars. It'll also help get vintage vehicles up to spec for modern safety equipment. The company is developing a network of trusted specialists, and will continue supplying spare parts and trackside technical assistance at major historic events. Porsche will also offer to store and maintain privately owned classic racers at its facilities – like the new Porsche Experience Center that's soon to open in Los Angeles – putting them on display for visitors to admire and even transporting them to and from the track for racing events. To highlight the newly enhanced program, Porsche is showcasing this restored 917K. This particular example, resplendent in iconic Gulf livery, won the thousand-kilometer race at Spa in 1971, and was entrusted a few years ago to Porsche Motorsport North America for restoration. It'll be participating in the Rennsport Reunion at Laguna Seca this weekend, but whether or not you'll be in Monterey for the event, you can check it out in the image gallery above. Restored Porsche 917K returns to US race track after 40 years Porsche provides new services for historic motorsport Stuttgart. Historic Porsche race cars represent many victories at the 24-hour classics of Le Mans and Daytona. And they also celebrated memorable successes at 1,000-kilometre events on storied circuits such as the Nurburgring and Spa-Francorchamps. To ensure that these vehicles can still be admired at race tracks today, Porsche now also offers customers a comprehensive service for historic motor racing in Germany and the USA. The priorities of the new business field are to restore vintage race cars as true to the original as possible as well as to repair and maintain them. "These vehicles have written motorsport history and have gained in value, at times markedly, in recent years," says Jens Walther, President & CEO of Porsche Motorsport North America in Santa Ana/California. "The historic motor racing scene has an extremely strong following in the USA, but many of these vehicles can also be seen on European race tracks. An increasing number of owners are now recognising how important it is for future gain that such vehicles undergo a true to original restoration." The figurehead for the new business service is the now completed restoration of a Porsche 917K.