Autoblog

Mazda to revive RX-7 in... 2017?

George Kennedy — Tue, 06 Nov 2012 16:01:00 EST

Filed under: Coupe, Performance, Technology, Mazda, Rumormill

There is a special place in our hearts reserved for the Mazda RX-7. Its screaming rotary engine made the '80s and '90s a time of high-revving fun. While Mazda continued the rotary with the four-door RX-8, the two are not the same car, and eventually the latter was phased out.

The Motor Report is the latest outlet to crank up the rumormill over a return to Wankel power and an RX sports car for the troubled Japanese brand. According to TMR, a rotary engine could come back - and so could the RX-7 nameplate - albeit not overnight. The return of the RX-7 is said to be set for 2017, and the source quoted is none other than Mazda sports car boss Nobuhiro Yamamoto.

Speaking with the press at a local launch of the updated MX-5 Miata, Yamamoto said the future RX-7 would have a curb weight close to that of the Toyota GT 86 (about 2,600 pounds), and have a larger emphasis on the driver's involvement. Yamamoto was also the powertrain chief for the JDM-market FD3S generation (1992-2002 model) and was extremely proud of that engine. Yamamoto reportedly says he would prefer a naturally aspirated version of that engine over any kind of forced induction solution, claiming that the 16X rotary engine that has been developed would be capable of 220kW (295 hp) in that configuration. The 16X was developed in 2007 but has yet to find its way into a production vehicle.

2017 would mark the 50th anniversary of the introduction of the rotary engine. Frankly, it would be a shame if some form of the quirky and revvy powerplant was not found under the hood of a sports car anywhere in the market.

Mazda to revive RX-7 in... 2017? originally appeared on Autoblog on Tue, 06 Nov 2012 16:01:00 EST. Please see our terms for use of feeds.

Permalink | Email this | Comments

This is what a six-rotor Wankel looks and sounds like

George Kennedy — Fri, 27 Jul 2012 19:29:00 EST

Filed under: Performance, Technology, Videos, Australia

Ah, the Wankel. You magnificent, high-reving feat of unorthodox engineering. Your biggest champion, Mazda, may have left you - at least for the moment - but that doesn't mean some mad mechanics can't rally you and a few friends for a high-horsepower party.

The folks over at Pulse Performance Race Engineering of New Zealand have constructed an engine made from six, count 'em, six Wankel rotors. The mere fact that this engine starts and runs is a testament to the mechanical know-how of these guys. For comparison's sake, Mazda's own Le Mans-winning 787 prototype utilized a four-rotor Wankel. Another four-rotor was constructed by BMI Racing's "Mad Mike," whose engines are worked on by Pulse Performance.

Scroll below to see the video and hear it for yourself. The engine's sound is not what you would expect from a rotary, and if we're being honest we don't find it terribly pleasant to listen to, but it's still an awfully impressive feat of engineering. We're not sure what kind of vehicle this insane powerplant will grace (we're guessing a drag car), but whatever it is, it figures to be one-of-a-kind.

Continue reading This is what a six-rotor Wankel looks and sounds like

This is what a six-rotor Wankel looks and sounds like originally appeared on Autoblog on Fri, 27 Jul 2012 19:29:00 EST. Please see our terms for use of feeds.

Permalink | Email this | Comments

Mazda builds final rotary engine

Jeremy Korzeniewski — Wed, 27 Jun 2012 16:57:00 EST

Filed under: Classics, Plants/Manufacturing, Mazda

Mark it down, auto enthusiasts. Mazda built its last rotary engine on Friday, June 22.

By final, we mean the line that assembled Renesis engines for Mazda's RX-8 sports car was idled, and there are currently no plans to restart its production. Mazda has a long-running history of building Wankel powerplants, and its production of the high-revving engine has seen a few stutters since Mazda put the first dual-rotor Wankel in a production car in 1967.

Of course, it's always possible that Mazda finds a way to solve - or at least drastically improve - the failings of the Renesis: high fuel consumption and poor emissions. We've been hearing about the so-called 16X rotary for years, and we'd love to see it enter production at some point in the not-terribly-distant future.

For now, though, join us in remembering some of Mazda's past rotary-powered machinery in the image galleries above and below. Even if the world never sees another production rotary, at least it's been a good ride.

Mazda builds final rotary engine originally appeared on Autoblog on Wed, 27 Jun 2012 16:57:00 EST. Please see our terms for use of feeds.

Permalink | Email this | Comments

Mazda tweet confirms next-gen rotory engine with SkyActiv tech

Jeff Sabatini — Tue, 11 Oct 2011 14:01:00 EST

Filed under: Japan, Technology, Mazda

In the soap opera saga of are they or aren't they still developing a rotary engine, Mazda seems to have indicated the affirmative. According to a translation of a Tweet from Mazda PR posted on a Japanese car blog, a "new model with a next-generation rotary engine" is in development.

While there's only so much to be gleaned from a single 140-character message - even in information-dense Japanese - this forthcoming vehicle will incorporate Mazda's fuel-saving SkyActiv technologies, which is only logical. Being thirsty has long been the Achilles heel of the Wankel, and anything that can help boost mileage and cut emissions should be well-received in a successor to the discontinued RX-8.

Mazda tweet confirms next-gen rotory engine with SkyActiv tech originally appeared on Autoblog on Tue, 11 Oct 2011 14:01:00 EST. Please see our terms for use of feeds.

Permalink | Email this | Comments

Rotary engine development halted at Mazda?

Aaron Richardson — Thu, 11 Aug 2011 08:58:00 EST

Filed under: Coupe, Sedan, Performance, Japan, Mazda, Rumormill

At the end of 2011, the Mazda RX-8 rotary-powered sport coupe/sedan will cease to exist in new-car showrooms. With it, the mass-produced rotary engine will take another hiatus. The original plan was to have the Renesis, the world's only mass-produced rotary, come back maybe as early as 2017 in a new sports car. In fact, we just heard reports that Mazda's rotor-obsessed gearhead engineers were still manning the program, albeit at a reduced pace.

According to Wards Auto, though, that plan may soon go south thanks to a weakened Japanese economy. The Renesis program is reportedly at the top of the list of programs to kill, and development on a new rotary has supposedly been halted for now. Mazda hopes it will be able to pick up its work in rotaries again sometime in the future, but the piston-free mills also have fuel economy and emissions woes to contend with, which may dampen their chances even further.

So, where does the truth ultimately lie? Our guess is that it would take a lot to get Mazda to abandon its rotary program entirely, considering how much history the Japanese automaker has tied up in the Wankel. That said, unless major inroads are made in efficiency, future rotary applications my be extremely few and far between... and a revival of the iconic RX line may never come to fruition.

Until we hear any official word from Mazda, you can find us in the corner crossing our fingers at 9,000 rpm.

Rotary engine development halted at Mazda? originally appeared on Autoblog on Thu, 11 Aug 2011 08:58:00 EST. Please see our terms for use of feeds.

Permalink | Email this | Comments

Mazda still pursuing rotary development

Zach Bowman — Sat, 06 Aug 2011 12:07:00 EST

Filed under: Etc., Japan, Technology, Mazda

Fear not, rotaryphiles. According to a report from The Detroit News, Mazda isn't giving up on the rotary engine anytime soon. Though the RX-8 is headed for the production guillotine, Mazda execs have apparently confirmed that engineers are working on a more efficient and more powerful version of the Wankel. While the project was technically back-burnered during the economic downturn, the research wasn't canned outright. That means that there's a chance that the rotary could make a comeback. What would it go into? That's a little less certain.

We know that the MX-5 Miata isn't a likely candidate, as Mazda has sworn to keep that vehicle true to its inline roots. A rotary does pair well with an extended-range electric vehicle platform, however, as the high-revving nature is perfect for turning a generator. While that may be a far cry from the low-slung RX-8, it's at least reassuring to know that the engine design could have a future.

Mazda still pursuing rotary development originally appeared on Autoblog on Sat, 06 Aug 2011 12:07:00 EST. Please see our terms for use of feeds.

Permalink | Email this | Comments

Mazda rumored to use laser-ignition for next-gen rotary

Zach Bowman — Tue, 28 Jun 2011 13:59:00 EST

Filed under: Coupe, Performance, Japan, Technology, Mazda, Rumormill

Mazda Kabura Concept - Click above for high-res image gallery

Autocar is reporting that the next-generation rotary engine from Mazda may turn to a laser ignition system instead of traditional spark plugs. The report supposedly comes straight from the mouth of a shadowy senior engineer within the program. Mazda has been hard at work on the 16X Renesis rotary since around 2007 and the engine has seen quite a few evolutions over the intervening years. Autocar says that the design has seen displacement swell from 1.3 liters to 1.6 liters and that at least some parts of the engine have been designed to be made from aluminum to further reduce weight.

The work is in an effort to get the rotary to be more fuel efficient and provide more torque, the latter not usually being a chief attribute of this type of engine. According to Autocar, using a high-temperature laser ignition system would allow engineers to tune the Wankel to run leaner than systems that use a conventional spark plug. It would also reportedly allow the engine control module to more accurately adjust and monitor timing.

Mazda rumored to use laser-ignition for next-gen rotary originally appeared on Autoblog on Tue, 28 Jun 2011 13:59:00 EST. Please see our terms for use of feeds.

Permalink | Email this | Comments

Mazda RX-9 to borrow hybrid tech from Toyota

Jeremy Korzeniewski — Tue, 24 May 2011 17:31:00 EST

Filed under: Coupe, Hybrid, Performance, Mazda, Rumormill

2006 Mazda Kabura Concept - Click above for high-res image gallery

The rotary rumormill continues to spin about as fast as a Renesis engine at redline (that's 9,000 rpm, for those keeping track). Might the next rotary-powered RX from Mazda be a hybrid? It very well may, if you believe a report from Motor Trend.

Lending credence to the story is a 2010 agreement signed between Mazda and Toyota that would have the Zoom-Zoom company licensing the technology that makes the Prius tick. At the time, Mazda indicated that its first hybrid using Toyota technology would hit the market in 2013. Will it be in the form of an RX-9?

Motor Trend reports that the successor to the RX-8 will eschew reverse-opening rear doors for a standard coupe format with an architecture based on the platform of the next-gen Mazda MX-5. If true, we may be talking about the world's first real rear-wheel-drive hybrid sportscar for the mass market.

It's worth noting that a hybrid powertrain may very well cure what has forever ailed the rotary engine: low torque (electric motors make gobs of the stuff at low rpm) and high fuel consumption. We like the idea of Mazda forging forward with the rotary engine, especially one that's tuned to make a ton of horsepower at stratospheric spinning speeds like a proper rotary should.

One potential weakness, though, is that Toyota's Hybrid Synergy Drive technology uses a complicated continuously variable automatic transmission, and those have typically failed to provide the excitement of a proper row-for-yourself manual gearbox, or even a dual-clutch. In any case, we're content to adopt a wait-and-see attitude on this latest rumor.

Mazda RX-9 to borrow hybrid tech from Toyota originally appeared on Autoblog on Tue, 24 May 2011 17:31:00 EST. Please see our terms for use of feeds.

Permalink | Email this | Comments

Report: Mazda working on next-gen rotary-powered RX-9

Noah Joseph — Thu, 04 Nov 2010 18:30:00 EST

Filed under: Coupe, Performance, Mazda, Rumormill

Mazda Kabura Concept - Click above for high-res image gallery

According to a report from Autocar, Mazda is currently working on a successor to the old RX-7 and the current RX-8. (We've heard this before. Many times.) Believed to carry the RX-9 nameplate, the next-gen sports car is tipped to ditch the innovative but clumsy quasi-four-door layout of the current RX-8, and that the platform is to be spun off from the MX-5 roadster. But what you really want to know about is the engine.

Dubbed the 16X project, the new Renesis rotary engine is expected to grow in size considerably over the RX-8's and pack around 300 horsepower - quite a bit more than the 232 hp we enjoy in the current car. Mazda is also said to be hard at work keeping the engine as clean and efficient as possible, as the current RX-8's high fuel and oil consumption have driven it out of certain markets already. The Japanese automaker could alternatively turn the RX-9 project strictly into a hydrogen halo vehicle, which might be nice if you happen to live near a hydrogen pipeline, less so for the rest of us.

Gallery: Mazda Kabura Concept

[Source: Autocar]

Report: Mazda working on next-gen rotary-powered RX-9 originally appeared on Autoblog on Thu, 04 Nov 2010 18:30:00 EST. Please see our terms for use of feeds.

Read | Permalink | Email this | Comments

Report: Mazda rotary reportedly at least a year behind schedule, but work continues

Jeremy Korzeniewski — Thu, 21 Oct 2010 18:01:00 EST

Filed under: Technology, Mazda

Renesis rotary engine in 2009 Mazda RX-8 - Click above for high-res image gallery

"We will never give up," says Mitsuo Hitomi, general manager of Mazda's powertrain division, referring to the automaker's long-running investment into the rotary engine. This vote of confidence in Felix Wankel's replacement for displacement will surely come as welcome news to rotor-heads the world over, but that doesn't mean there aren't problems in World of Wankel.

Apparently, the so-called 16X engine, which is the latest take on the pony-keg-sized engine that spins into the stratosphere, is failing to meet emissions requirements set by the engineering team at Mazda, despite the fact that it is 30 percent more fuel efficient than the previous Renesis rotary. Impressively, Hitomi stated that the 1.6-liter 16X is slightly more fuel efficient than the automaker's standard 2.0-liter gas engine.

It would seem that the rotary's well-known thirst for fuel has at least partly been quenched, but until the 16X is tuned to hit its emissions targets we can expect it to stay in the engineering department and off the showroom floor. So, when might we see a new rotary-powered machine from Mazda? "Maybe within two years we can tell you when we will introduce it to the market," responds Hitomi.

Now, let the debate continue as to what kind of body and platform that engine will be featured in...

Gallery: 2009 Mazda RX-8 R3

[Source: Automotive News - Sub. Req'd]

Report: Mazda rotary reportedly at least a year behind schedule, but work continues originally appeared on Autoblog on Thu, 21 Oct 2010 18:01:00 EST. Please see our terms for use of feeds.

Read | Permalink | Email this | Comments

Chery reportedly researching Wankel engines for extended-range EVs

Zach Bowman — Wed, 20 Oct 2010 18:22:00 EST

Filed under: China, Technology, Chery, Electric

Mazda isn't the only company out there working on the next-generation rotary engine. According to China Car Times, Chery is also dabbling in Wankel technology. The company isn't so much interested in bringing non-piston love to The People's Republic so much as they are finding a more efficient way to charge the batteries in an extended-range EV. If CCT's intelligence is accurate, the plan is to use an 800cc Wankel as a sort of internal-combustion lifeline so that if an electric car's batteries go dead the driver won't be walking home. The strategy is in line with what we've seen from the Chevrolet Volt.

Chery has already worked up a prototype or two using electron-powered QQ3 models. China Car Times says that the vehicles can drive up to 93 miles on battery power alone. Throwing in the new Wankel has extended the vehicle's range by as much as an additional 43 miles. As of right now, there are no specifics as to whether or not Chery plans to bring the range-extended QQ3 to market.

[Source: China Car Times]

Chery reportedly researching Wankel engines for extended-range EVs originally appeared on Autoblog on Wed, 20 Oct 2010 18:22:00 EST. Please see our terms for use of feeds.

Permalink | Email this | Comments

Next-gen Volt could use diesel, two-cylinder or rotary range extender

Sam Abuelsamid — Wed, 26 May 2010 19:00:00 EST

Filed under: Hybrid, Technology, Hatchback, Chevrolet, Electric

2011 Chevrolet Volt - Click above for high-res image gallery

Back in 2006 when the Chevrolet Volt was first conceived, its extended-range electric (ER-EV) powertrain was originally dubbed E-Flex as its configuration was designed to be flexible. The only part of the system that was constant was the electric drive and the presence of a battery. The architecture was designed so any type of powerplant could be used as a range extender, and over the last three years concepts have been shown with flex-fuel three-cylinder turbos, inline-four diesels and hydrogen fuel cells.

Ultimately, powertrain chief engineer Larry Nitz and his team opted for a normally aspirated 1.4-liter inline-four for the first generation Volt because it offered the best combination of cost and efficiency. However, while working on the first generation Volt, work on the second-gen. model has been happening in parallel. Way back in May 2007 we talked to then-VP for R&D Larry Burns about using an HCCI engine for the Volt since it could be optimized to operate at steady state speeds and he agreed that was certainly one possible direction.

Right now the top priority for the second-generation Volt is driving down the cost of the powertrain, including the battery. Although automakers are always reluctant to talk about parts pricing, GM's project management VP, Jon Laukner, has hinted on more than one occasion that the Volt pack costs somewhere in the $600 per kilowatt-hour range or under $10,000 for the 16 kWh unit. The goal is to get that cost down below $400 per kWh in the next few years and a combination of increased volumes and LG Chem launching cell production in western Michigan will certainly help to achieve that.

Reducing the cost of the range extender will also play a part. GM's VP of global vehicle engineering, Karl Stracke told Inside Line that smaller range extenders in the 15-18 kilowatt range are part of the strategy and either a two-cylinder piston engine or a single rotor Wankel are possibilities to replace the current inline-four. Volt communications manager Rob Peterson confirmed to Autoblog that a number of different variants are being evaluated, but he wouldn't say if any particular direction has been selected yet.

Powertrain engineering consultant FEV has recently been showing off an ER-EV Fiat 500 with a Wankel range extender. While Wankels are not known for fuel efficiency (quite the opposite actually), a modern direct injected unit for this type of application could be highly optimized to provide acceptable performance and consumption. A Wankel also has the advantage of being both very compact for its output and vibration-free, making it well suited for this type of application. With the first generation Volt only expected to have about a three-year life-span, a final decision will likely be made very soon.

Gallery: Quick Spin: 2011 Chevrolet Volt

Photos Copyright (C)2009 Sam Abuelsamid / Weblogs, Inc.

[Source: Inside Line, General Motors]

Next-gen Volt could use diesel, two-cylinder or rotary range extender originally appeared on Autoblog on Wed, 26 May 2010 19:00:00 EST. Please see our terms for use of feeds.

Permalink | Email this | Comments

Geneva 2010: Audi A1 e-tron Wankels its way to the show floor

Jeremy Korzeniewski — Tue, 02 Mar 2010 16:52:00 EST

Filed under: Concept Cars, Hybrid, Geneva Motor Show, Hatchback, Audi, Electric

Audi A1 e-tron concept - Click above for high-res image gallery

No, Wankel is not really a verb. At least, not that we know of. But it is the last name of the man who designed the rotary engine, and we think our man Felix would be more than pleased with the latest application of his barrel-shaped internal combustion powerplant. In case you missed it before, that would be as the range-extender buried inside Audi's new A1 e-tron electric vehicle, which is currently on display at the Geneva Motor Show.

As we told you before, Audi's smallest e-tron features a 12-kilowatt-hour lithium ion battery pack that feeds a steady stream of electrons to a front-mounted electric motor with 102 peak horsepower. The aforementioned Wankel rotary engine features one lone rotor, displaces 254cc and sits just aft of the battery pack under the rear seat. Why a Wankel? Audi says the complete package weighs in at just 154 pounds and puts out a nice, steady stream of power at a constant 5,000 RPM. Check out our gallery of live images from the show floor in Geneva below.

Gallery: Geneva 2010: Audi A1 e-tron

Gallery: Audi A1 e-tron concept

Geneva 2010: Audi A1 e-tron Wankels its way to the show floor originally appeared on Autoblog on Tue, 02 Mar 2010 16:52:00 EST. Please see our terms for use of feeds.

Permalink | Email this | Comments

SEMA 2009: World's only known four-rotor Mazda RX-8

Frank Filipponio — Fri, 06 Nov 2009 09:40:00 EST

Filed under: Aftermarket, Motorsports, SEMA Show, Coupe, Performance, Mazda

BMI Racing Mazda RX-8 four-rotor - Click above for high-res image gallery

We came across this RX-8 at SEMA and it immediately rang a bell. Time Attack, four-rotor, Mazda RX-8? It's the BMI Racing car we saw on Streetfire a while back. It's said to be the only four-rotor RX-8 in the world and it looks and sounds incredible. Don't believe us? You can see a couple of videos after the jump and judge for yourself.

Gallery: SEMA 2009: 4-Rotor Mazda RX-8

Continue reading SEMA 2009: World's only known four-rotor Mazda RX-8

SEMA 2009: World's only known four-rotor Mazda RX-8 originally appeared on Autoblog on Fri, 06 Nov 2009 09:40:00 EST. Please see our terms for use of feeds.

Permalink | Email this | Comments

SEMA 2009: Turbo rotary Mazda MX-5 begs to be flogged

Damon Lavrinc — Thu, 05 Nov 2009 16:20:00 EST

Filed under: Aftermarket, SEMA Show, Convertible, Coupe, Performance, Mazda

Turbo Rotary Mazda MX-5 - Click above for high-res image gallery

If you get the impression things are all high gloss and dubs in Vegas, you wouldn't be far off. But walk around the SEMA compound long enough and you come across something cool that that speaks to the gearhead, track rat in each of us.

Unfortunately, we don't have a lot of details about this red NA Mazda MX-5, but we do know it's been worked over by Mike Burlas Designs from Rialto, California, and it has a turbocharged 13B rotary underhood. Further, it has been kitted out with an adjustable suspension, upgraded brakes and what appears to be a fiberglass (or Kevlar) blistered fender kit.

But the crowning jewel is the carbon fiber fastback roof which the company is selling in fiberglass form for $1,800. It's not quite as cool as the MX-5 coupe concept from way-back-when, but it's nice to see the Miata getting some S2000-style fixed roof love in Sin City.

Gallery: SEMA 2009: Turbo Rotary Mazda MX5/Miata

SEMA 2009: Turbo rotary Mazda MX-5 begs to be flogged originally appeared on Autoblog on Thu, 05 Nov 2009 16:20:00 EST. Please see our terms for use of feeds.

Permalink | Email this | Comments

REPORT: Mazda's next-generation rotary needs more work

Jeremy Korzeniewski — Fri, 23 Oct 2009 09:00:00 EST

Filed under: Coupe, Performance, Mazda

2009 Mazda RX-8 - Click above for high-res image gallery

Though the rotary engine certainly has its fair share of detractors, many who find themselves behind the wheel of a Wankel-powered machine from Mazda fall in love with the engine's zippy and rev-happy characteristics... including this particular blogger, who purchased a new RX-8 back in 2004. Regardless, nobody can deny that the rotary has always been a thirsty little bugger, especially when compared to powerplants with similarly rated displacements.

We've been hearing for the last few years - and seemingly every other time a new rendition of the Wankel engine came to market - that the next version of Mazda's rotary would address complaints about its high fuel consumption and emissions. Perhaps the early projections about the so-called 16X engine were a wee bit premature. According to Seita Kanai, head of R&D at Mazda:

The 16X demonstrated the possibility, but that performance is not good enough. We are doing R&D which will incorporate more new technology... The 16X is more a profile of a rotary still in our concept stage. It needs more evolution.

That really doesn't sound all that confidence inspiring to us. At this point, only time will tell if the 16X will actually be ready for prime time when the long-rumored next-gen rotary-powered car from Mazda hits the scene in 2012 or so.

Gallery: 2009 Mazda RX-8 R3

[Source: Automotive News - Sub. Req'd]

REPORT: Mazda's next-generation rotary needs more work originally appeared on Autoblog on Fri, 23 Oct 2009 09:00:00 EST. Please see our terms for use of feeds.

Read | Permalink | Email this | Comments

Tokyo 2009: Mazda RX-500 still awesome nearly 40 years later

Drew Phillips — Thu, 22 Oct 2009 10:20:00 EST

Filed under: Concept Cars, Coupe, Japan, Tokyo Motor Show, Mazda

1970 Mazda RX-500 Concept - Click above for high-res image gallery

One of the coolest concept cars here at the Tokyo Motor Show isn't even new. In fact, it's almost forty years old. Originally displayed at the Tokyo show in 1970, this Mazda RX-500 Concept features styling similar to the legendary Ferrari 250 GTO Breadvan, gullwing doors that swing forward, and a 491cc rotary engine just behind the seats. Weighing in at just 1873 pounds, the 247-horsepower concept was said to have reached nearly 150 mph on Mazda's test track.

The car was recently restored in partnership with the Hiroshima City Transportation Museum where it has apparently been on display for the last year. Lucky for us, they decided to bring it to the show for us to enjoy as well. Check out this unique bit of retro-conceptual genius in our high-res gallery below.

Gallery: Tokyo 2009: 1970 Mazda RX-500 Concept

Tokyo 2009: Mazda RX-500 still awesome nearly 40 years later originally appeared on Autoblog on Thu, 22 Oct 2009 10:20:00 EST. Please see our terms for use of feeds.

Permalink | Email this | Comments

VIDEO: Norton NRV588 rotary-powered motorcycle in action

Jeremy Korzeniewski — Tue, 14 Apr 2009 17:20:00 EST

Filed under: Motorsports, Videos, Motorcycle

Norton NRV588 rotary-powered motorcycle - Click above to watch the video

Undoubtedly, the company that's most often associated with rotary engine technology is Mazda. The Japanese automaker has been building Wankel powerplants for decades, with the current RX-8 standing alone as the only new automobile powered by the innovative engine architecture. In reality, though, many firms have experimented with the rotary engine, including Suzuki, which offered a rotary-powered motorcycle in the Seventies. Up until the mid-Nineties, European racetracks were filled with the buzzing sounds of Wankel-engined Norton motorcycles terrorizing their larger four-stoke twin-cylinder competitors and winning races such as the Isle of Man TT in 1992.

That unmistakable buzzsaw sound is set to make a comeback at this year's running at the Isle of Man as the latest Norton revival takes to the track. Click past the break for a video of the rotary-powered NRV588 as it makes a few laps at Donington Park and the dyno. Pay special attention to the exposed exhaust pipes, which reportedly get so hot they need to be made from Inconel.

[Source: Visordown via Asphalt and Rubber]

Continue reading VIDEO: Norton NRV588 rotary-powered motorcycle in action

VIDEO: Norton NRV588 rotary-powered motorcycle in action originally appeared on Autoblog on Tue, 14 Apr 2009 17:20:00 EST. Please see our terms for use of feeds.

Read | Permalink | Email this | Comments

Mazda extends rotary warranty on RX-8 to 100k miles

Jeremy Korzeniewski — Thu, 05 Jun 2008 10:28:00 EST

Filed under: Maintenance, Coupe, Performance, I.C.E., Marketing/Advertising, Recalls, Mazda

Click above for high-res gallery of the 2009 Mazda RX-8.

You've got to hand it to Mazda for its perseverance with the Wankel rotary engine design. Ever since it's engineers managed to make it semi-reliable, the turbine-like smoothness of the quick-spinning lump has seen duty in numerous Mazda-branded vehicles, and even a few others as well. Still, despite constant engineering work and updates to the basic rotary engine design, there is a lingering question about the reliability of the design. Most owners seem happy with the engines in their RX, that is, until a seal blows or they forget to keep the oil supply topped up and it fails to restart. Or it floods in the winter, needing a tow. Alright... so there may be a few problems.

To ease the minds of RX-8 owners and owners-to-be, Mazda has reportedly decided to extend the warranty coverage for the 2004-2008 Renesis rotary engine for a period of eight years or 100,000 miles. Mazda even goes so far as to offer reimbursement to those who've spent money on engine repairs before 100,000 miles. This seems like a nice measure made in good faith on Mazda's part. After all, most educated owners of the rotary-powered cars knew what they were getting when these purchases were made, and the engine was already covered under the same basic warranty that comes standard with all Mazda vehicles. Nice work, Mazda.

In the interest of full disclosure, this particular blogger bought an RX-8 new in 2004, though it was sold two years later.

Gallery: 2009 Mazda RX-8 R3

[Source: RX8Club.com]

Mazda extends rotary warranty on RX-8 to 100k miles originally appeared on Autoblog on Thu, 05 Jun 2008 10:28:00 EST. Please see our terms for use of feeds.

Read | Permalink | Email this | Comments

2012 Mazda RX-9: Winding Road adds fuel to the fire

Noah Joseph — Mon, 31 Dec 2007 14:03:00 EST

Filed under: Performance, Mazda

The mysterious images of a 2012 Mazda RX-9 that we brought you a few days ago appear to be illustrations cooked up by Winding Road magazine's in-house sketch artist Glenn Poblete, who literally drew on Mazda's current design language from the Kabura concept and other recent Mazda showstoppers to come up with a good guesstimate.

As for the heart of the beast, Winding Road figures on a front-engine/rear-drive layout with a limited-slip diff mated to either a rotary engine, in the grandest Mazda tradition, or ditching the Renesis for a more conventional V6 or V8. If Mazda decides to stick with the Wankel engine, it would have to improve on its gas and oil consumption, and it could benefit from a pair of variable turbochargers like in the latest Porsche 911 Turbo. Displacement on an updated Renesis, if chosen, could increase to 1.8-liters (if you consider the current version to displace 1.3-liters) or 3.5 (if you hold the current one at 2.6).

Like our compatriots, we hope Mazda sticks with a purely two-seat set-up instead of trying to squeeze tiny seats in the back, but the RX-9 could gain a suicide rear door to ease access if rear chairs are added. If that were the case, the RX-9 would effectively replace the quasi-four-door RX-8, which is anticipated for a facelift soon.

[Source: Winding Road]

2012 Mazda RX-9: Winding Road adds fuel to the fire originally appeared on Autoblog on Mon, 31 Dec 2007 14:03:00 EST. Please see our terms for use of feeds.

Read | Permalink | Email this | Comments