1972 Chevrolet C-10 Pickup on 2040-cars

Auto blog

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.

GM threatens predatory dealers with order cancellations, non-transferrable warranties

General Motors will launch a second salvo against misbehaving dealerships next week with a new set of policies aimed at curbing predatory markup strategies. With the new Chevrolet Corvette Z06, GMC Hummer EV SUV and Cadillac Escalade-V about to head into production, GM is putting its foot down yet again. Dealers that attempt to circumvent GM's markup restrictions by dealing directly with brokers or other resellers could find themselves in a particularly nasty spot, as the company is threatening to withhold future allocations and end the transferability of warranties when dealers facilitate the reselling of vehicles within 12 months.  While this may help curb some dealership chicanery, it's possible the real loser in such a deal could end up being the customer who unwittingly ends up with an un-warrantied vehicle. We suspect GM has accounted for that, but we'll have to wait until next week to find out exactly how these new policies will be enforced.

GM to build next-gen Chevy Cruze in Mexico

As one of its global products, General Motors builds the Chevy Cruze for local consumption at assembly plants around the world: in Australia, South Korea, Vietnam, Thailand, China, India, Kazakhstan, Russia, Brazil and Ohio. The automaker is expected to trim those locations for the next generation of its compact sedan, but its latest announcement has it adding a new site to the list: Mexico. As part of a $350-million investment, GM's plant at Ramos Arizpe in Coahuila will gear up for production as one of several sites that will be charged with building the next-gen Cruze. The General has yet to announce just which plants those will be, but it has confirmed that the Lordstown, Ohio, site will once again be among them. The plant in St Petersburg, Russia, which has produced the current Cruze, is being shut down, as is the Holden plant in Elizabeth, Australia. The Ramos Arizpe assembly plant currently puts together the Chevy Sonic and Captiva as well as the Cadillac SRX, but has over the course of its 34-year history handled a variety of models for the Chevy, Pontiac, Buick, Cadillac, Saturn, Opel and even Saab brands. The site handles a quarter of GM's production in Mexico, and exports 87 percent of its capacity to other markets. Invertira GM 350 mdd en Ramos Arizpe para fabricar siguiente generacion de Chevrolet Cruze 2015-03-23 - Se consolida GM de Mexico como el sexto productor global de vehiculos para General Motors Company Ramos Arizpe, Coahuila - General Motors de Mexico anuncio este dia que invertira 350 millones de dolares en su Complejo de Manufactura Ramos Arizpe, para fabricar en estas instalaciones la siguiente generacion del modelo Chevrolet Cruze. "Esta inversion, que forma parte de los 5 mil millones de dolares anunciados en diciembre pasado para todo el pais, fortalecera la presencia de GM Ramos Arizpe en la produccion de nuestra compania a nivel mundial y, por supuesto, consolidara a Mexico como el sexto productor de automoviles para GM Company, con el 7% de la produccion global", informo Ernesto M. Hernandez, Presidente y Director General de GM de Mexico. En una reunion de trabajo en la que participaron Ruben Moreira, Gobernador del Estado de Coahuila y Rogelio Garza, Subsecretario de Industria y Comercio del Gobierno Federal, el Presidente de General Motors en el pais aseguro que el Complejo GM Ramos Arizpe se ha consolidado como un iman para las inversiones de la compania a nivel global. Adicionalmente, Ernesto M.