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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