1999 Mazda Miata Hardtop 1.8l 36k Miles On Fresh Motor on 2040-cars

Auto blog

Mazda files patent applications for inline-six technology, new transmission

We've known for some time that Mazda is one of the OEMs getting back on the inline-six engine bandwagon, and a report from Japan gives us a glimpse of some of the automaker's plans. Mazda has filed patent applications for both new exhaust components (depicted with an inline-six) and a new eight-speed automatic transmission.  The news comes from a blog called T's Media (fire up Google Translate), which located the new hardware in two separate fillings, one for exhaust system components and one for the new transmission.  Mazda's lineup has been exclusively powered by four-cylinder engines since the demise of the last-generation CX-9, which utilized a 3.7-liter V6 sourced from Ford. Since, Mazda has relied on turbocharging to get more power out of its SkyActiv four-pots, but changes may be coming. Prior reports have indicated that Mazda wants a new, larger engine architecture to power vehicles built on a new, larger platform. This new chassis is expected to accommodate longitudinal, rear-wheel drive powertrains, which could spawn larger crossovers and SUVs. It could also potentially underpin a new rear-wheel drive coupe, if Mazda decides to go that route.  While the inline engine itself is not news, what we're seeing here might actually be hints as to Mazda's approach to the next generation of its SkyActiv engine architecture. Mazda's exhaust patent seems to describe a scalable — perhaps even modular — setup intended to be used with inline and potentially even V-engines.  "Provided is an engine exhaust structure capable of securing exhaust efficiency while reducing the size of the engine by changing the structure of an exhaust port," a translation of the patent application's introduction says. "[T]here has been proposed a technique for collecting exhaust gas discharged from each cylinder inside a cylinder head without using a separate exhaust manifold with the aim of downsizing the engine." In other words, Mazda is looking for ways to make its future engines more compact, and the strategy detailed here is the use of an integrated exhaust manifold, similar to what other automakers (such as Honda and Ford) have utilized on their smaller-displacement turbocharged engines. The sketch above of an inline-six engine with just two exhaust ports illustrates this concept.  The eight-speed transmission, while noteworthy in its own right as Mazda currently relies on aging six-speeds, doesn't seem to offer us anything particularly game-changing.  Related Video:

Next Mazda MX-5 Miata headed for 2015 Chicago debut

Twenty-six years after it was introduced at the 1989 Chicago Auto Show, the much anticipated fourth generation Mazda MX-5 Miata will meet the press at the 2015 Chicago show. A piece in Autocar refines some of the details on the larger, lighter Miata that a Mazda insider has said will be "our best-looking car ever."
The company has relented on the quest for the metric tonne, the 1000-kilogram (2,200-pound) target too difficult to achieve in light of cost constraints. You can still expect it to lose a generous dollop of weight - Autocar says a curb weight of 1,100 kg (2,420 pounds) will still make it the lightest in its class. And Mazda will be stressing a fun driving experience through light weight and a modest amount of naturally-aspirated horsepower. Engine capacities of 1.5 and 2.0 liters are expected. Sounds familiar (and good), right?
The Miata's interpretation of Kodo design will be veer from that found on the Mazda3 and Mazda6, with "very clean and simple" lines marking out "more muscular proportions" and elongated bodywork on a longer wheelbase. A stretched engine bay will make room for the current Skyactiv engine and perhaps the future Skyactiv 2 powerplants, initial reports suggesting there could be a 30-percent increase in fuel economy from the moment it arrives.

Mazda2 successor to ride atop shortened CX-5 platform

Mazda, looking to make the most of its new, lightweight Skyactiv vehicle architecture, will allegedly use a version of the CX-5 crossover's platform to underpin its next-generation Mazda2 hatchback, according to a report from Just-Auto.com. Of course, the Mazda2 is a much smaller vehicle than its larger CUV stablemate, so some serious chopping will no doubt be in order when it comes time to engineer the replacement for the company's smallest hatch.
Currently, the CX-5 and the sleek new Mazda6 share many of the same platform components, and this architecture will already be scaled down to support the next-generation Mazda3 sedan and hatchback, which will debut later this year. Just-Auto.com states that all of Mazda's remaining front-wheel-drive vehicles will eventually switch to reworked versions of this Skyactiv platform, including the replacement for the larger CX-9 crossover.
Also of note, Mazda will reportedly be switching to shorter, four-year lifecycles for its vehicles. This means that the newly launched Mazda6 will be replaced for the 2016 calendar year, with a refresh coming sometime in 2014. That said, vehicles with platforms supplied by other automakers (like the upcoming MX-5 Miata replacement that will share its underpinnings with an Alfa Romeo product) will not necessarily follow this four-year rule.