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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 13B-T is a turbocharged version of the 13B engine, with a compression ratio of 17.6:1. Output is 120 hp (89 kW) at 3,400 rpm with 159 ft·lb f (217 N·m) of torque at 2,200 rpm. The later "LASRE" version has 130 PS (96 kW) at 3,400 rpm and 30.0 kg⋅m (294 N⋅m; 217 lb⋅ft) at 2,000 rpm.
Thus the Wankel is a 2:3 type of rotary engine, i.e., its housing's inner side resembles a two lobes oval-like epitrochoid (equivalent to a peritrochoid),. [25] In contrast, its rotary piston has a three vertices trochoid shape (similar to a Reuleaux triangle). Thus, the Wankel engine's rotor constantly forms three moving working chambers. [26]
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.
It featured a 12A carbureted rotary engine as well as the option for a 13B rotary engine with electronic fuel injection in later years. The second-generation RX-7, sometimes referred to as the FC, was offered as a two-seater coupé with a 2+2 option available in some markets, as well as in a convertible body style.
Mazda introduced the NR-A kit for the RX-8 Type S in January 2004, approved by the Japan Automobile Federation (JAF). The NR-A kit, sold through Mazda Anfini and other dealers throughout Japan, brings the RX-8 up to specification in terms of eligibility for participation in the one-make Party Race sanctioned by JAF.
13B may refer to: Boron-13 (13 B), an isotope of boron; A Mazda Wankel engine; A Toyota B engine; Yavarum Nalam or 13B, an Indian horror film; Section 13b of the ...
The power-to-weight ratio (specific power) is defined as the power generated by the engine(s) divided by the mass. In this context, the term "weight" can be considered a misnomer, as it colloquially refers to mass.