2021 Mazda Cx-5 Signature on 2040-cars

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Mazda just restored the 787B's forgotten older brother

Among Mazda's many racecars, none is as famous as the 787B, and for good reason. The 787B remains the only Japanese car and the only rotary-powered car to win overall at the 24 Hours of Le Mans. It wasn't Mazda's only successful endurance racer, though. Before the 787B, there was the 767B. Mazda's 767B racecars competed in the IMSA GTP class at endurance races throughout 1989. They featured 630-horsepower four-rotor engines and were very successful in their class. This newly restored car took first and second place class finishes in five of the six races it participated in, and each finish was in the overall top ten. The one exception was a DNF in which the transmission failed. Twenty-five years after the 767B's glory days, Mazda initiated a complete teardown and restoration of the aged car. The work was done by Downing Atlanta and supervised by former Mazda racers Rick Engman and Jim Downing. (Fun fact: Downing was one of the designers of the HANS device.) The shop has also restored other racecars for Mazda, including one of the 787Bs. The car went through a two-year rehab and will make its track re-debut at the Monterey Motorsports Reunion. The event takes place next weekend at Mazda Raceway Laguna Seca where the track will once again feature the angry shriek of a competition-grade rotary engine. Related Video: Image Credit: Mazda North American Operations Motorsports Mazda Automotive History Racing Vehicles Pebble Beach

Mazda hard at work on Skyactiv 2 engine technology

As Mazda continues the current rollout of its still-new Skyactiv technology, the automaker is already looking at improving its family of engines for even better fuel economy and emissions reductions. Automotive News reports that with stricter fuel economy and emissions regulations planned for 2020 and 2025 in Europe, Mazda will likely release engines with next-generation Skyactiv 2 technology by the end of this decade, and Skyactiv 3 units just five years later.
The latter is expected to focus on improved engine cooling and lessening energy losses, but the big news in AN's report is that the next-gen Skyactiv 2 engines will use Homogeneous Charge Compression Ignition, or HCCI. This type of ignition is very similar to how a diesel engine operates (with high compression and using the compression stroke for fuel combustion rather than spark plugs), a method said to provide a cleaner and more efficient fuel burn - to the tune of a 30-percent improvement in fuel economy compared to current Skyactiv engines. Other automakers, including Hyundai, have already announced they are developing HCCI powerplants with similar technology and characteristics, so Mazda likely won't be a lone wolf here.
Equipped with HCCI technology, Mazda figures to be able to compete with larger automakers in terms of fuel economy and emissions without resorting to hybrid powertrains, continuously variable transmissions or automatics relying on more forward gears (eight or more) for optimal efficiency. Some of the challenges of HCCI, according to AN, include the need for better engine cooling, risk of misfire at high and low rpm and uneven engine performance based on fuel properties.

Mazda MX-5 breeds upgraded Roadster RS in Japan

Fans of the new Mazda MX-5 Miata looking for something a little more performance-focused may be enticed by the new RS model. Unfortunately they'll have to go all the way to Japan to get it. Because Mazda will only be offering this particular version back home. The new RS version of the Mazda Roadster (as it's known in Japan) features a number of performance upgrades, although none of them specifically affect the engine or its output. The Roadster RS features Bilstein dampers and front suspension tower brace for better handling, along with bigger brakes for added stopping power, a retuned steering rack for sharper turn-in, and upgraded exhaust for a better sound. Inside it's also been treated to heated Recaro seats with Nappa leather and Alcantara trim and a nine-speaker Bose audio system. It also comes equipped with adaptive front lighting and high-beam control as well as lane-departure and blind-spot warning systems. Feeling left out yet? Don't be too disappointed, or book that ticket to Tokyo's Natita International Airport just yet. The Mazda Roadster RS only comes with the smaller 1.5-liter engine that produces 129 horsepower, which is significantly less than the 2.0L we get here at 155 hp. It does, however, come with the six-speed manual instead of the automatic. So while this may not be the most powerful version of the Miata, it may be the enthusiast favorite – at least in the JDM. Related Video: