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Timing and altitude

To: <mgs@autox.team.net>
Subject: Timing and altitude
From: "James Nazarian" <jhn3@uakron.edu>
Date: Sat, 12 Apr 2003 02:28:01 -0400
I have a question of actual application this time.  This is what got me
thinking about the octane stuff I sent earlier.  Last fall I moved from
Boulder Co ~1mi above sea level, to Medina, Oh ~1000 feet above sea level.
I did the obvious mixture changes and readjusted idle etc, but found that I
had to retard the timing a couple of degrees to prevent pinging under load.
Does this make sense?  Should I have to run less advance near sea level?

James Nazarian
71 MGB Tourer
71 MGBGT V8
85 Dodge Ram

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