11. "The cars will be louder, normally-aspirated engines , " he said. 12. In addition, a 2.0-liter naturally aspirated engine producing will be available in Russian markets. 13. George banned the expensive turbocharged engines that CART uses, adopting cheaper, simpler, normally aspirated engines . 14. "These are normally aspirated engines , and they're really weather-dependent. 15. It was the first race with the new chassis and 4000 cc naturally aspirated engines . 16. GT2s are stock-based unibody cars with turbo-charged or normally aspirated engines based on an equivalency formula. 17. Although some believe warmer air won't hinder normally aspirated engines as much, a dropoff is expected. 18. Both are naturally aspirated engines producing and respectively. 19. He believes the IRL teams have continued to improve the IRL cars, which have normally aspirated engines . 20. "' Porsche Matmut Carrera Cup France "'is a flat-6 naturally aspirated engines that produce and 420 N�m.
