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The Renesis engine – also 13B-MSP (Multi-Side Port) – which first appeared in production in the 2004 model-year Mazda RX-8, is an evolution of the previous 13B. It was designed to reduce exhaust emission and improve fuel economy , which were two of the most recurrent drawbacks of Wankel rotary engines.
The Revelation was an Australian special edition of the RX-8 with a limited production run of 100 cars. The model incorporated the top specification features of the standard RX-8 with the 9-speaker Bose sound system, sand beige colored leather seats, more piano black accents on the interior, and came with the same 13B Renesis rotary engine.
Wankel: Mazda: L8A 10A 12A/12B 13A 13B 20B 26J/26B Renesis: 798 982 1146 1310 1308 1962 2622 1310: 1963– ... Mazda is the only producer of successful Wankel engines
It used a 2-rotor 13B Wankel engine, similar to the production engine in the Mazda RX-7. [1] The bodywork and chassis were actually built by Mooncraft racing with assistance from Mazda. Two 717Cs were entered at 1983 24 Hours of Le Mans, being the only finishers in the C Junior class, and finishing 12th and 18th overall.
Early engine designs had a high incidence of sealing loss, both between the rotor and the housing and also between the various pieces making up the housing. Also, in earlier model Wankel engines, carbon particles could become trapped between the seal and the casing, jamming the engine and requiring a partial rebuild.
The Mazda RX-7' is a front-engine, rear-wheel-drive, rotary engine-powered sports car, manufactured and marketed by Mazda from 1978 through 2002 across three generations, all of which incorporated use of a compact, lightweight Wankel rotary engine.
Throughout its career, the car used a Mazda 13B Wankel rotary engine, similar to that used in the production RX-7s. Although the rotary-engined sports prototypes generally had a reputation of being very reliable, the Mazda GTP frequently failed to finish races, and was never able to better the eighth place achieved at the 1983 24 Hours of Daytona .
Premiers were shipped to Japan without engines or transmissions, and Mazda fitted a 1.3-liter 13B Wankel engine into the bay. It was the first large Japanese car to meet the 1975 emissions standards, although that was a short-lived distinction because the Nissan President followed suit a month later.