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Mazda's new turbo four fits in both the 6 and the 3

Despite the size differences, the Mazda CX-9 shares a lot with its smaller car-based siblings, the Mazda6 and Mazda3. That could allow Mazda to slot its full-sizer's new 2.5-liter, turbocharged four-cylinder engine under the hood of its smaller offerings. Pardon us while we do a happy dance. "[The 2.5-liter turbo] fits in a lot of our cars, and where we're actually going to put it is another question," Mazda North America vehicle development engineer Dave Coleman told Australia's Car Advice. Coleman specified that the turbocharged engine will fit in all the same applications that can accommodate the company's 2.5-liter gas and diesel engines. "Basically, that big space we used for the bundle of snakes exhaust manifold, the turbo is in that space too. They're all packaged to occupy the same space. It's exactly the same clearance as the exhaust manifold of the other engines." This kind of logic – if Engine A is the same size as Engine B, then both should fit in Car C – is what's lead us to imagine a turbocharged Mazda6 since the new engine was announced. In short, it's great news. Mazda's 2.5-liter turbo is a hell of an engine in the CX-9, and it's hard to imagine it'd be worse in a lighter vehicle. But just because it works from an engineering standpoint doesn't mean it's going to happen. At least, not soon. "It fits. I'm not a product planner so I don't get to make that call," Coleman told Car Advice. "It's up to the product planners to decide what they're going to put it in." The most obvious application for a turbocharged engine in the 3 or 6 is as a reborn Mazdaspeed model. But don't get too excited – Coleman said Mazda hasn't even gotten as far as building an engineering prototype with this engine. We're still firmly at the theoretical stage. And that's bad news, because it gels with what we've been reporting – that Mazda will wait a generation for future Mazdaspeed models. We just stopped doing our happy dance. Related Video:

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

Mazda has no plans for an RX-9, despite ongoing rotary development

We know Mazda is capable of making wonderful cars in any form or bodystyle. It also likes to tease enthusiasts with promising concepts like the stunning RX-Vision. In news that's sure to raise the ire of enthusiasts around the world, it seems the automaker has no plans to follow through with a production version of that beautiful, Soul Red coupe. In fact, it doesn't look like Mazda is interested in building any sports car that would slot above the Miata. In an interview with Automotive News, Mazda CEO Masamichi Kogai responded with a simple "No" when asked if Mazda has plans for a larger sports car entry. Kogai was asked if Mazda has any plans for a production rotary. He said that the 1.5- and 2.0-liter engines in the Miata are more exhilarating. That's a debatable and subjective argument that thousands of rotary owners both past and present would likely disagree with. It's more likely that despite ongoing development of the Wankel, Mazda is still struggling to meet emissions standards. Despite the advantages of a rotary (high power-to-weight ratio, compact size, rev-happy nature), it's not very fuel efficient and struggles with emissions testing. Also, despite the prestige and attention a halo sports coupe could potentially bring, Mazda is a small, independent automaker that needs to focus on mass appeal. Creating an all-new design with a unique engine isn't cheap. Badging a non-rotary car as an RX would be sacrilege, so don't expect an RX anything anytime in the near future. Current RX owners should take a moment to lament. Their car probably needs another quart of oil anyway. Related Video: