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What a 181-horsepower 2019 Mazda MX-5 Miata means for us, and you

Last month, we reported on a VIN filing dug up by Road & Track that showed that the 2019 Mazda MX-5 Miata's 2.0-liter Skyactiv-G engine would get a power bump, from 155 to 181 net horsepower. As for how the 2019 Miata would make that extra power, we heard rumors it'd utilize a new cylinder head allowing higher revs, accounting for that extra power. Now we have what appears to be a leaked document from Mazda Canada showing exactly where that extra power comes from. According to the document posted at Miata.net (registration required to see the image), Mazda will alter camshaft lift and valve size on both the intake and exhaust side, fit freer-flowing exhaust, and smooth and enlarge the piping on the air intake side. There are also internal engine modifications: lighter pistons with lower crowns for better swirl in the combustion chamber, lighter connecting rods, and a crankshaft balanced for higher-RPM operation. All those extra revs mean extra vibration and noise, so Mazda will ditch the single-mass flywheel for a "low-inertia" dual-mass flywheel – which will attempt to find a nice balance between DMF damping action and SMF directness. Overall, it's a pretty serious engine revision with some driveline changes that will heavily affect the driving characteristics of a fantastic driver's car. Contributing Editor James Riswick and Senior Editor Alex Kierstein, both well versed in Miatas past and present, are here to analyze what this could mean for the little roadster. James Riswick: I don't know much about them lighter crank combustion rods, but I for one welcome the news of more power to the Miata. The jump from 155 to 181 seems like a very prudent Mazda-like thing to do, accomplishing that task through various aforementioned technical wizardry as opposed to slapping on a turbocharger, exclaiming "yee-hah" and calling it a day. Alex Kierstein: That's true. I'm wary of additional power, but you do make a good point that at least this is the right way to do it. Going all-motor will keep the bright responsiveness of the engine intact. But higher revs might make power delivery peakier. Frankly, I'd be ok with moving the torque and horsepower peaks up a bit in the rev range, making it a bit more work to access the engine's sweet spot. The dual-mass flywheel should also help if low-end torque suffers, so less stalling in traffic. JR: Did wonders in the 911 and 718s.

2016 Mazda MX-5 Miata reveal to be livestreamed, feature Duran Duran

We're all hungry like the wolf to see the unveiling of the next-generation 2016 Mazda MX-5 Miata on September 3, but Mazda is seriously excited about taking the sheet of its latest droptop because it has 1980s New Wave act Duran Duran headlining the event. In case you can't make it to Monterey, CA, Tokyo or Barcelona to watch the reveal happen, the brand is also livestreaming it on YouTube starting at 6:00 PM PT (9:00 PM ET). The Miata is then showing its all-new face again during the broadcast of Fashion Rocks on CBS on September 9 at 9:00 PM ET.
Facts about the new MX-5 have remained elusive, but we saw its bare chassis at the 2014 New York show. The roadster was rumored to return to the classic oval grille from the earlier models and also shed a decent amount of weight over the current version, possibly around 300 pounds.
Don't worry about noting the big reveal in your calendars, though. Not only will Autoblog be in attendance in Monterey to hear Simon Le Bon belt out Rio, we will also publish another post linking to the livestream before the unveiling. In the meantime, scroll down to read Mazda's announcement and check out the link to the stream, which just shows a countdown at the moment.

Mazda recalls 1.37 million older vehicles for ignition switch short [UPDATE]

UPDATE: Mazda has confirmed to Autoblog that NHTSA's figures and list of effected models are accurate. Mazda is recalling 1,368,500 older vehicles in the US that date as far back as the late '80s because a potential short circuit in the ignition switch could cause a fire. According to the National Highway Traffic Safety Administration, the models include: 1990-1995 323 1993-1998 626 1993-1995 929 1989-1998 MPV 1993-1997 MX-6 1992-1993 MX-3 1990-1998 Protege Mazda reports that over time the grease around the switch's contact points can carbonize and become conductive, which can eventually lead to a short circuit. In some cases this results in smoke, but it could also lead to a fire. According to company spokesperson Tamara Mlynarczyk to Autoblog, there're no accidents, injuries, or fires in the US. Once the vehicle is running, the potential fault also doesn't affect drivability. Documents from NHTSA (as a PDF), indicate there was a fire in one of these vehicles in Japan in 2002 that could have been linked to this issue. The recall should begin in December. In its announcement of the issue below, Mazda reports 1.2 million vehicles affected and includes the 1990-1996 323/Protege. Autoblog has reached out to the company to understand the discrepancy. Related Video: RECALL Subject : Ignition Switch may Overheat Report Receipt Date: OCT 19, 2015 NHTSA Campaign Number: 15V674000 Component(s): ELECTRICAL SYSTEM Potential Number of Units Affected: 1,368,500 All Products Associated with this Recall Vehicle Make Model Model Year(s) MAZDA 323 1990-1995 MAZDA 626 1993-1998 MAZDA 929 1993-1995 MAZDA MPV 1989-1998 MAZDA MX-6 1993-1997 MAZDA MX3 1992-1993 MAZDA PROTEGE 1990-1998 Details Manufacturer: Mazda North American Operations SUMMARY: Mazda North American Operations (Mazda) is recalling certain model year 1989-1998 MPV, 1990-1995 323, 1990-1998 Protege, 1992-1993 MX-3, 1993-1995 929, 1993-1997 MX-6, and 1993-1998 626 vehicles. In the affected vehicles, grease applied to the contact points inside the ignition switch may become conductive and overheat. CONSEQUENCE: If the ignition switch overheats there would be an increased risk of a fire. REMEDY: Mazda will notify owners, and dealers will replace the ignition switch, free of charge. The recall is expected to begin December 15, 2015. Owners may contact Mazda Customer Experience Center at 1-800-222-5500, option#6. Mazda's number for this recall is 8715J.