2dr Conv Man Touring Mazda Mx-5 Miata Touring Low Miles Convertible Manual Gasol on 2040-cars

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Mazda recalling 18k Mazda6 and RX-8 models over airbag inflators

Faulty Takata airbag inflators keep taking their toll on automakers. Mazda is the latest to be affected in the US by announcing a recall covering 18,050 Mazda6 and RX-8 models to replace the front, passenger-side airbags. Specifically, the campaign covers 18,000 Mazda6 units from the 2003 and 2004 model years built between May 29, 2002, and March 4, 2004, and 50 RX-8 vehicles from the 2004 model year made between June 25, 2003, and June 30, 2003.
As with the rest of the vehicles with these faulty inflators, it's possible for the part to rupture when deploying the airbag and potentially spray shrapnel at the occupant. Mazda's defect notice goes into a bit more detail than most about the problem saying: "some propellant wafers have been produced with an inadequate compaction force, or may have been exposed to uncontrolled moisture conditions (those wafers could have absorbed moisture beyond the allowable limits)."
This isn't Mazda's first difficulty with Takata-supplied airbags this year. The company was among the seven automakers that recalled vehicles in hot-weather states over the inflators. It also had to recently fix 42,000 Mazda6 vehicles in China over the issue.

Mazda creates reproduction parts program for North American MX-5 Miata

In 2017 Mazda announced a restoration program for the MX-5 Miata in Japan. The good news was that owners of Miatas that looked like they'd been thoroughly enjoyed for decades could get their convertibles returned to as-new condition. The bad news is that the program was a trial for "quality verification," and only open to the Japanese market. At the time, Mazda Japan said it was "considering re-supply of parts that became discontinued" for the first-gen NA series produced from 1989 to 1997. In February this year, the carmaker's then-CEO revealed that "Our fans can be reassured that additional parts, identified by owners and specialty shops, will become available by June of this year." The time has come, Mazda North America announcing a reproduction parts program for first-gen Miatas with a catalog of more than 1,100 new and legacy components.  The automaker says it spoke to Miata clubs and shops to determine which parts were needed most. Among this first salvo will be a fabric soft top using the same rear screen material from the NA series, roller mechanism for the side windows, brake calipers, and a set of aluminum Enkei wheels in the original design that are lighter and boast a better finish. Perhaps even better are the arcane OEM parts that can be desperately hard to source for era-appropriate restorations, like grommets, bolts, gas shocks and the "Roadster" badge that's an eBay go-to (called a "Mascot" on the parts list). Each piece has been redeveloped to take advantage of modern materials and build techniques while maintaining the look of the period-correct original.  The parts list PDF runs to 42 pages. Anyone with a TLC-starved Miata in the garage, the love your jinba ittai droptop has been waiting for is here.   

How Mazda got Skyactiv-X to work is incredible

"Take everything you know about engines and turn it around," Mazda North America Vehicle Development Engineer Dave Coleman says, patiently and with a look of benevolent pity, as he's quizzed about the particulars of the company's new engine. The Skyactiv-X engine is enigmatic — and deceptively simple in operation. And the bottom line for American consumers is that they'll be able to buy a car (or crossover; we don't know yet what vehicle will first get it) by late 2019 that provides diesel-like fuel economy but runs on regular old gasoline. In between diesel and spark ignition, but it's neither To truly understand it, you have to dive into the contradictions. Take that regular old gasoline: Contrary to common sense, the lower the octane, the better it works. In the lab, the Skyactiv-X engine loves 80 octane. The lowest Americans get is 87, so the engine is tuned for that octane. Go higher and you lose some low-end torque. Coleman was right. It's hard to wrap your head around an engine that thrives just at the point when most gas engines would aggressively self-destruct. It uses a supercharger to pump additional air — but not additional fuel. It uses spark plugs to start a combustion cycle that normally doesn't need a spark. And, quixotically, it's not displacing Mazda's own American-market diesel engine, currently languishing in a seemingly endless hell of regulatory approval. More bizarre: Mazda is a tiny automaker facing real existential headwinds, and gasoline compression ignition is a massive challenge. GM and Hyundai announced compression ignition, or HCCI, projects (full name, homogeneous charge compression ignition) to great fanfare, but they never amounted to a production hill of beans, crippled by reliability issues or horrible vibrations. Worse, they only worked at an unusably narrow range — low RPMs and low loads. HCCI research improved direct-injection gas and diesel engine technologies for these companies, but HCCI itself remains untamed. The benefits of lean combustion Why even try to tame HCCI? The answer is much better fuel economy and lower emissions. Less burned carbon-based fuel, less carbon dioxide released. That's simple. But there are some thermodynamic reasons for the lean combustion you can achieve with compression ignition that are worth explaining. The ideal amount of fuel for a conventional engine to burn is about a 14:1 air-to-fuel ratio. That lets every molecule burn nicely, in theory.