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Watch what happens inside a rotary engine

Since it looks like Mazda may very well revive the Wankel rotary engine as a range extender for electric cars, there's no better time to become reacquainted with the quirky internal-combustion engine. And there's hardly a better way to become reacquainted than by peering into a running rotary engine, which you can do with the video above. The video comes to us from the YouTube channel Warped Perception. The channel has already shown what happens inside a conventional internal-combustion piston engine by putting a clear cylinder head on top of a flathead engine. This new video shows off the rotary engine by adding a clear side to a tiny model-airplane engine, something that we weren't aware existed and are glad to know about now. Despite the tiny size, the engine is functionally almost exactly like the bigger versions you'll find in Mazdas from about 1967 to 2012. It has intake and exhaust ports on the edges of the rotor housing, and the triangular rotor swings about in a peanut-shaped housing. For maximum effect, jump to right around the 7:40 timestamp. This is the point at which a bit of acetylene is added to the air-fuel mix for a brighter flame. It's at this point that you can really see when the mixture combusts and how the pressure of the flame pushes the rotor to produce rotational motion. Each stage of the video does slow things down to make everything as clear as possible. Even if you already knew how rotary engines worked, it's still fascinating to watch, first because it's something you don't get to see usually, and also because of the engine's elegant simplicity. Related Video: Image Credit: YouTube / Warped Perception Weird Car News Mazda Technology Videos rotary rotary engine

Junkyard Gem: 1986 Mazda 323 DX Hatchback

Mazda built generation after generation of the Familia, starting with the Giugiaro-styled machines of the 1960s. The first Familia that sold well in North America was called the GLC (for "Great Little Car"), and it began life as a rear-wheel-drive cousin to the RX-7 before the Familia went to a front-wheel-drive platform for the 1981 model year. The GLC name stuck around these parts through 1985 — and I've documented a few discarded examples of these now-rare machines during my junkyard travels — before getting the 323 name starting in the 1986 model year. It's no sweat to find 1990s 323s in junkyards, but I've been scouring the car graveyards of the land for the elusive early 323 and, finally, found this moss-encrusted '86 in a San Francisco Bay Area yard. BMW popularized the lower-case-i nomenclature for fuel-injected cars with the first 3-Series back in the 1977 model year, and Mazda wasted no time making "1.6i" badges to tout the futuristic technology under the hood of their low-priced econo-commuter a decade later. At a time when most Civics had carburetors (and the notorious "Map of the Universe" diagram to untangle the underhood vacuum lines), the electronically fuel-injected engine in this car was a major selling point indeed. It wouldn't be many more years before the wretched Subaru Justy was the final carbureted Japanese car available in America, but this 1.6-liter B6 four-cylinder (which evolved into the engine that, flipped 90 degrees, powered the early Miatas) was high-tech stuff for a cheap car in 1986. Just 84 horsepower, but they were clean and reliable horses. In the middle 1980s, the common perception in North America was that you had to buy a Honda or Toyota if you wanted an affordable car that could make it to 200,000 miles. This 323 held together just as well as most Tercels or Civics from 1986. Of course, I've seen a junkyard RX-7 with 393,854 miles, so you just never know. When you see lots of moss and lichens on a car in a Northern California junkyard, you know it spent years — maybe decades — languishing in a shady outdoor spot. Perhaps this car racked up 20,000 miles per year slogging through a harrowing Lodi-to-Sausalito commute, then got parked and forgotten in 1996. We'll never know. With the optional automatic transmission — nearly every early 323 I've seen had the 5-speed manual — this car wouldn't have been much fun to drive. Point A to Point B would have been fine, though.

NHTSA urges owners of recalled Takata airbag vehicles to take immediate action

The National Highway Traffic Safety Administration and the Department of Transportation are taking the unusual step of issuing a followup press release urging owners of certain recalled vehicles "to act immediately" to fix their cars and trucks. The problem in question concerns the repair campaigns for rupturing Takata airbag inflators issued in June and covers a long list of models from Toyota, Lexus, Honda, Acura, Mazda, BMW, Nissan, Infiniti, Buick, Cadillac, Chevrolet, GMC, Oldsmobile and Pontiac.
While NHSTA doesn't specifically say why the recall is vital in the new release, Toyota's own explanation in its newly announced renotification campaign earlier today sheds some new light on the topic. According to the Japanese automaker, in testing, Takata found a possible link between the rupturing airbag inflators and high humidity. NHTSA is advocating that all owners pursue repairs immediately if they haven't already done so already. This is especially crucial for those drivers especially in Florida, Puerto Rico, Guam, Saipan, American Samoa, Virgin Islands and Hawaii because of the humid conditions there.
We don't need to tell you how dangerous an inadvertent airbag deployment could be - even in a stationary vehicle - but adding to the Takata issue is fears that the deployment could lead to shrapnel being sprayed into the cabin.