| 11. | The first post-war rules for the top level of motor racing allowed 1.5-litre supercharged or 4.5-litre normally aspirated engines.
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| 12. | Since atmospheric pressure reduces as the aircraft climbs, power drops as a function of altitude in normally aspirated engines.
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| 13. | It marked the introduction of a new production-based, normally aspirated engine formula as well as a new chassis design.
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| 14. | As early as 1989, the 9000 was equipped with the larger B234 2.3-litre engine, providing in the normally aspirated engine.
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| 15. | Combined with their normally aspirated engines and a higher downforce chassis, the IRL cars were able to handle the steep banking.
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| 16. | On a normally aspirated engine ( no turbo ) you might not improve things at all-and you could make matters worse.
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| 17. | Single-seat chassis built by G Force and Dallara will be matched with Oldsmobile Aurora and Nissan Infiniti Indy 4.0-liter normally aspirated engines.
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| 18. | However, in race trim they were delivered putting out, which could be improved further to, while still using normally aspirated engine components.
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| 19. | It also swallowed a huge pill of pride when it decided to abandon the turbocharged engine in favor of a normally aspirated engine.
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| 20. | The chosen engine is the Lycoming TIO 540 AH1A engine, which is a turbocharged version of the currently installed normally aspirated engine ."
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