1985 Mazda Rx-7 2d on 2040-cars

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Fourth-gen Mazda MX-5 Miata could get turbo power later in life

While there's a lot to love about the new Mazda MX-5 Miata, its debut was met by a vocal group of enthusiasts who derided the fourth-generation roadster's reduction in power output. The new model only puts out 155 horsepower, down from 167 in the NC. A report from Australia, though, claims Mazda may yet address the less potent output of the ND. Things started earlier this year, as Motoring.com.au tells it, when Mazda's global PR boss, Kudo Hidetoshi, hinted that a turbocharged or Mazdaspeed model "will definitely" be considered. Then last month at Goodwood, the ND's program manager, Nobuhiro Yamamoto, said complainers were welcome to get their thrills elsewhere. Recognizing this contradiction among Mazda's brass, Motoring asked Yamamoto-san again about his statements, which he seemed to walk back. "It's not a conflict [between statements made by Yamamoto and Hidetoshi]," Yamamoto said, indicating that his statements were made in relation to the new MX-5's launch. "Kudo-san talked about this in terms of a 10-year lifespan, but when I was asked the question right after the launching of the ND, I said 'we have no plan to have a turbo at that point in time.' That is what I meant." Seeking an opening, Motoring pushed the Japanese engineer on the chances of a more potent MX-5, perhaps without a turbocharger. "If you could achieve what we want, to which is great response, very light and powerful with great performance feel with natural aspiration, then we don't need a turbo," Yamamoto said. "But if we want more power because we don't get satisfied with natural aspiration then we may think about the turbo." Related Video:

Patent application suggests Mazda rotary return

A recent patent application by Mazda reveals that the Japanese automaker is still working on the rotary engine. This could in fact be the Skyactiv-R engine found in the RX-Vision concept from the 2015 Tokyo Motor Show. As with anything Wankel-related, nothing is certain until Mazda makes a production commitment. But this filing suggests that serious development is happening in Hiroshima. The 2011 Mazda RX-8 was the last rotary-powered car you could buy in America. Slow sales, poor fuel economy, and tighter emissions standards prevented Mazda from committing to a follow-up. But the fundamental principles of the rotary - compact size and light weight - perfectly fit Mazda's Skyactiv ethos. (For an explanation of how rotaries work, click here.) In this new engine the intake port sits at the bottom of the engine with the exhaust port on top instead of the other way around. That allows for lower mounting, which improves a car's center of gravity. This rotary is also turbocharged. Putting the turbo up high helps ensure it doesn't get in the way of any body or chassis crossmembers. The implication of those claims is that somebody is thinking about how to put this engine in a car. There are other benefits as well. The short path from the exhaust port to the turbo ensures minimal turbo lag. It also allows for a close-mounted catalyst on top of the enigne, which will help emissions. Another innovation in this new engine is a triangle-shaped rotor that covers part of the exhaust port. This allows for different exhaust flow characteristics. The filing claims that that two of the four orientations allow for less airflow resistance in the exhaust port. As in previous Mazda rotaries, there are two spark plugs to manage ignition timing and combustion. But unlike in the 16X concept, Mazda's last public display of such an engine, the new rotary uses port fuel injection. Keep in mind this is only a patent application. A Mazda spokesperson refused to comment on future product, but commented "As we stated at the Tokyo motor show, Mazda is doing all that it can to bring a rotary to the market." In the meantime, keep your RX-7 prayer candles lit and hope for the return of the rotary before the end of the decade. You can bide your time by reading the entire application here. Related Video: Related Gallery Mazda RX-Vision Concept: Tokyo 2015 View 11 Photos News Source: USPTO via autoevolution Rumormill Mazda Performance rotary mazda rx7

Mazda brings slick sports-car concept to Tokyo

Mazda teased a slick spots-car concept Wednesday that will debut at the 2015 Tokyo Motor Show. The as-yet unnamed concept promises to blend elements from the company's heritage with a sleek and modern shape. It apparently takes the form of a front-engine, two-door coupe – always a favorite configuration – with a sloping roofline and classic hood-to-greenhouse ratio. It'll be displayed alongside the Koeru concept (which returns home for its Japanese debut), a handful of MX-5 Miatas, and a classic 1967 Cosmo Sport 110S – the marque's original, rotary-powered sports car. We have a good feeling that it's the latter from which the new concept principally draws its inspiration, albeit with different dimensions than the long-tailed original - and hopefully a little RX-7 thrown in for good measure. We'll have to hold on a while longer to find out, but we're looking forward to seeing the finished product. Mazda to Unveil New Sports Car Concept at Tokyo Motor Show -- Japan-debut of Mazda KOERU and racing-spec Mazda Roadsters among fourteen models on display -- HIROSHIMA, Japan, Sept. 29, 2015 /PRNewswire/ -- Mazda Motor Corporation will hold the world premiere of a new sports car concept model at the 2015 Tokyo Motor Show, which runs from October 30 through November 8.*1 A total of 14 models will be on display at the Mazda stand, including crossover concept Mazda KOERU making its first appearance in Japan, two racing-spec Mazda Roadsters (known as Mazda MX-5 outside Japan) and the Cosmo Sport (110S outside Japan), first introduced in 1967. The design of the sports car concept to be unveiled in Tokyo is modern but maintains a sense of lineage and authenticity, appearing almost to condense Mazda's entire history of sports car development into a single model. In line with the company's theme for the Tokyo Motor Show this year, "Accelerate toward our dreams," Mazda will make an appeal for the brand's unique approach to driving pleasure. In addition to the sports car concept, Mazda KOERU will be on display along with new-generation models featuring SKYACTIV Technologies and KODO—Soul of Motion design. A motor sports exhibit will feature racing-spec Roadsters and the Cosmo Sport will complement a heritage display showing Mazda's history of convention-defying engineering.