While I was building the Wankel Willys (Specs below) eveyone said it wouldn’t be good for off roading and the 13b has “zero torque” but….with low weight and proper gearing this thing works amazingly at any speed. It weighs 2,100 pounds wet and is geared just right. 126:1 final crawl ratio and overdrive. It will cruise at much higher speeds than a stock Willys (while getting better fuel economy) but also idles up hills & over rocks at 1000 rpm.. after 3 years many trail days and thousands of mile

The Rolls Royce designed and built twin rotor diesel Wankel engine. A view taken from the flywheel end of the engine. You can see the engine was picking up speed prior to Howard stopping it! Well I think he stopped it. Nice example of external combustion | Anson Engine Museum

Sachs 303 Wankel ported 7.5k rpm | Snowy Range Snowmobile Club

MAZDA RX-7 FC S5 TURBO II – 1990 Rara versão Silver on Blue O RX-7 FC S5 Turbo II marca o auge da segunda geração do RX-7, produzido entre 1989 e 1991. Este exemplar é um dos poucos Turbo II originais, e não uma conversão. O motor 13BT rotativo foi totalmente reconstruído com large street port por Steve Wallace, entregando cerca de 350 cv. Conta com single turbo T04, coletor HKS Log Manifold, wastegate de 38 mm, blow-off HKS e gerenciamento Microtech LT8s. O câmbio manual de 5 marchas tem short