Altitude question.

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lucas
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Altitude question.

Post by lucas »

Running bout 16 in hg at 3500 feet. Normal?
1993 legacy ss "Shela"
Legacy777
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Re: Altitude question.

Post by Legacy777 »

I'm assuming that is your vacuum reading at idle....correct?

Based on this chart
http://www.engineeringtoolbox.com/air-a ... d_462.html

There's a 3.6 in HG difference in pressure between sea level and 3,500 ft. Since you want between 19-20 in HG vacuum at idle, your reading of 16 in HG is good.
Josh

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1990 Legacy (AWD, 6MT, & EJ22T Swap)
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farfrumwork
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Re: Altitude question.

Post by farfrumwork »

My Vacuum at ilde was ~14inHG here at 5500' ASL (perfectly normal). Now with delta cams it runs 10-11inHG at idle (a bit low).
Old - '93 T-Leg - 14.693 @ 92.68 at 5800ft ASL (Bandimere Speedway)
New - 07 Spec B/stg 2

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