How does a turbo work then? I assume that 10 PSI boost means that the manifold pressure is 10 PSI greater than the atmosphere pressure. So wouldn't that mean that you are still making less power at altitude than at sea level? Perhaps I am totally wrong here - heck this is why I am asking the question! :-) David Marshall Fast Forward Automotive Inc. 4356 Quesnel-Hixon Road Quesnel BC Canada V2J 6Z3 http://www.fastforward.ca mailto:sales@fastforward.ca Phone: (250) 992 7775 FAX: (250) 992 1160 - Vanagon Accessories and Engine Conversions - Vanagon, Transporter and Iltis Sales and Importation - European Lighting for most Volkswagen models
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-----Original Message----- From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com]On Behalf Of Dennis Haynes Sent: June 6, 2003 6:18 PM To: vanagon@GERRY.VANAGON.COM Subject: Re: Degrading Comments
A naturally aspirated engine will lose 3% for 1,000 feet of altitude. This goes for gasoline or Diesel. The major factor is decrease atmospheric pressure which will result in decreased cylinder charge. This why lower octane fuels such as 83 or 85 are used in high altitude areas. Dennis
-----Original Message----- From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM] On Behalf Of Pensioner Sent: Friday, June 06, 2003 8:13 PM To: vanagon@GERRY.VANAGON.COM Subject: Degrading Comments Engine performance degradation as function of altitude? Data, numbers, curves, experiences? NB it has been pointed out that the air resistance actually decreases at altitude. I'm looking for engine performance numbers independent of van configuration. p |
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