Celebrate 40 years of rotary power with Mazda

Click image for a gallery of the Mazda Cosmo Sport
The good old internal combustion engine has been in service since the 17th century when Sir Samuel Morland rather impractically used gunpowder to drive water pumps. It was not until 1876 when Nikolaus Otto invented the modern four stroke engine that the internal combustion engine became practical for automobiles, however. Those same four cycles, intake, compression, combustion and exhaust are used in the Wankel rotary engine, although instead of the strokes of a piston the rotary creates it's cycles as a roughly triangular shaped rotor spins inside its housing. Doesn't make sense? Click here.
2007 marks Mazda's 40th in using the rotary engine. Our favorite application of it would have to be the Cosmo Sport, of course. Many of you will choose the RX-7 as a personal favorite. It's also alive in the current RX-8, which even sports a hydrogen-powered version for the alternative fuel crowd. And we'd be remiss if we forgot to mention the jaw-dropping four-rotor 787B racer that won the 24 Hours of Le Mans. Those of us who own, or have owned, a rotary engined vehicle and loved it can take this moment to say "thanks" to Felix Wankel and to Mazda for its commitment to the rotary. Forty years and going strong!
We've assembled four galleries of famous Mazda rotaries, including the Cosmo Sport gallery below, as well as galleries of the RX-7, RX-8 and 787B Le Mans racer.
[Source: Mazda]
Gallery: Mazda Cosmo Sport
Gallery: Mazda RX-7
Gallery: Mazda RX-8
Gallery: Mazda 787B
PRESS RELEASE:
Mazda Celebrates the 40th Anniversary of the Rotary Engine Vehicle
Today marks the 40th anniversary of Mazda's first rotary engine powered vehicle. As of the end of April 2007, Mazda has manufactured approximately 1,970,000 rotary vehicles since production first began.
Mazda's Representative Director, Chairman of the Board, President and CEO, Hisakazu Imaki, said, "The rotary engine symbolizes Mazda. It was born from the tireless efforts of our past leaders and a corporate culture which embraces tough challenges. Keeping this proud tradition going forward, we will continue our research and development of the rotary engine in accordance with the Sustainable Zoom-Zoom plan that we announced in March 2007. As Mazda's next generation eco-engine, the hydrogen rotary engine holds great promise and, in fact, is already running on public roads. Mazda will aspire to adding new value to our rotary technologies by investing further in hydrogen rotary engine Research & Development."
Near the end of the 1950s, many automakers around the world dedicated considerable Research & Development resources for the development of the rotary engine (RE), but most discontinued their efforts because they were unable to surmount the formidable technical challenges inherent to the technology. Mazda alone persevered, eventually overcoming these obstacles and successfully achieved RE mass production. On May 30, 1967, Mazda commenced sales of the world's first dual-rotor RE car, the Cosmo Sport. Following this, Mazda introduced other RE vehicles to the market, including the Familia Rotary Coupe, Savanna, RX-7 and Eunos Cosmo. With a number of improvements in fuel economy and environmental performance over the years, sales of Mazda vehicles equipped with RE engines continue to be produced.
Mazda began its involvement in motor sports in 1968, following the release of the Cosmo Sport, when RE cars started participating in car races. In 1991, the Mazda 787B made rotary engine history when it became the only Japanese car ever to claim victory at the Le Mans 24 hour endurance race. Additionally, with over 100 wins in both the touring car series in Japan and in the International Motor Sports Association (IMSA) series in the United States, RE-equipped racecars have enjoyed a glittering record of success.
The RX-8 sports car was launched in April 2003. It is powered by the new generation, naturally-aspirated RENESIS rotary engine, which is more compact, powerful and environmentally friendly than its predecessors. Britain's specialist technology magazine, Engine Technology International, awarded the RENESIS its coveted International Engine of the Year award in 2003 as well as successive awards for its engine class in 2003 and 2004, to show its high regard for this engine.
Currently, Mazda is advancing with its development of the hydrogen RE, which emits no carbon dioxide (CO2), one of the gases responsible for global warming. Development of the hydrogen RE started in 1991 and has thus far resulted in the RX-8 Hydrogen RE, which in February 2006 became the world's first hydrogen RE vehicle to be commercially leased. Currently, seven hydrogen RE vehicles are on the road in Japan under commercial lease.






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Reader Comments (Page 1 of 2)
Juan 1:29PM (5/30/2007)
I'll never forgive myself for selling my '87 Rx7. Most fun car I've ever owned!
Thank you, Herr Wankel!
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Aetius 1:38PM (5/30/2007)
My 3 doesn't have a rotary in it, but I do know that this company definitely knows how to make fun-to-drive cars :-)
Thank you, Mazda!!!
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rem83 1:42PM (5/30/2007)
Has anyone ever tried putting a Renesis in a Miata?
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Joe K. 2:18PM (5/30/2007)
yes, i know a guy in Jersey to do it. had all sorts of difficulty with the motor mounts and it eventually suffered catastrophic failure in early 'test runs' he had gotten the engine and such from a buddy's completely destroyed early 90s rx-7... he was a master tech and had his own shop so he was working on it... This was all a few years ago... Haven't spoken to him in awhile... he always had weird projects going, Ford turbocoupes, v8 rangers, etc. etc.
Matt W 3:27PM (5/30/2007)
The renesis was introduced with the RX-8. The engine your "buddy" from Jersey used was not a renesis.
Tyo 3:28PM (5/30/2007)
The best Rotary is the 4th Generation Eunos Cosmo, the 20B w/ Sequential Turbo's making 300hp in 1990. These cars also has a sweet touch screen crt system in them. It did everything 15+ years before BMW's IDrive
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tooler 2:46PM (5/30/2007)
Salute those engineers in Mazda!
Admire their determination on rotary engine.
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pythonjimmy 3:01PM (5/30/2007)
Tooler-
You are so right! Mazda was given up for dead not many years ago!
glitched 3:18PM (5/30/2007)
My brother used to have one... I actually miss the sound of rotaries now, such an unmistakable sound they make....
I3ziko 3:06PM (5/30/2007)
mazda designs great fun cars, i have owned a millenia and now i drive mazda6
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Joe K. 3:45PM (5/30/2007)
dude, when did all of autoblog get taken over by a-holes? Sorry Matt, was thinking about rotaries, you know the thing the original article was about... And for you information, cuz I know how this 'my buddy' stuff happens to spread around. I met him at Englishtown raceway park in NJ and he is a mechanic who lives in Hunterdon county. didn't realize we needed to get specific. Do us a favor and cut off your fingers...
Clarence 3:33PM (5/30/2007)
The Cosmo is dated but has a look that I still like. Seems like Mazda did a knock-out beautiful concept retro on this one.
In 1968 at the auto show in Tripoli, Libya, I viewed the Wankel NSU RO80, sort of a grand-daddy of them all.
I test drove a Mazda R100 once and almost bought it.
Did they forget the RX4?
Did they forget the rotary pickup?
I did buy a used 85 RX7 GSL-SE from the second owner who bought it in early 1986. It had little problems but I never drove it without saying, "Man, I love this car."
I suspect that I have not owned my last rotary-engined car just yet.
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evlmnky 3:59PM (5/30/2007)
I love rotaries, which is exactly why i had to go buy myself a 87 RX7 this year to go along w/ my other mazdas lol. Yay for 40 years!
And Joe K, I dont think Matt W was being an "a-hole" a specific question was asked "Has anyone ever tried putting a Renesis in a Miata?"
Plenty of people have put 13b rotary engines (from 2nd and 3rd gen RX7s) into miatas and i have seen several of them, they are monsters. The Renesis is a completely different engine and to my understanding it is a bit more difficult. So in this case, yes, specifics were necessary.
And wow...way to F up my comment autoblog...
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Don 4:01PM (5/30/2007)
One of the very few Japanese cars with any soul.
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AntBee 4:25PM (5/30/2007)
I've always love the Mazda RX-7, and was sad that it met its demise in North America after the awesome 3rd generation. I'm glad to have the RX-8 on North American shores, and love the looks and performance aspects, but it hasn't quite captured my heart like the RX-7 did. Mazda makes great cars, and I hope to remain a loyal customer of theirs for years to come. Congrats on 40 Years of Rotary Power!
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Vasco da Gama 8:55PM (5/30/2007)
I am so glad that I kept my 1995 RX7, I think I may even go out for a drive after dinner to celebrate the 40 years.....
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Bryan 9:34PM (5/30/2007)
I thought this was an old Jag at first glimpse!
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Barney 9:49PM (5/30/2007)
Mazda wasn't the first to try the Wankel but the only one to be persistent enough to make it work.. Mazda was/is the radical one, like Chrysler use to be.
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FC RX7 Driver 11:49PM (5/30/2007)
Happy birthday rotary users! I hooked! I so happy I bought my 87 RX7 this year, this car is amazing. The chassis is something ahead of its time, and the engine is one of the most addictive things to drive on the road.
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Del Taco 12:44AM (5/31/2007)
Thanks Felix, my RX-7's and I are looking forward to the next 40 years...
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