You should do a plug cut and/or install an O2 sensor in the header
collector(s) to make sure you're not running on the edge, especially
when you put your foot in it. It's entirely feasible to tune the mixture
for efficient highway running but you need to see if the mixture richens
up appropriately when you're at full throttle. Peak efficiency is
generally achieved at stoichiometric or slightly leaner (14.7:1 or
higher air/fuel ratio by mass) while peak power is made using richer
mixtures (12 to 13:1).
Theo
-----Original Message-----
From: owner-mgb-v8@autox.team.net [mailto:owner-mgb-v8@autox.team.net]
On Behalf Of Barrie Robinson
Sent: May 28, 2007 9:36 AM
To: Paul Hunt
Cc: V8 list
Subject: Re: Mileage
Paul,
I am as amazed as you. I have checked everything and all seems to be
correct. The run was down (Ontario) Highway 401 and then 410, across
on the toll 407 to 400 and fini. Thus no stops, slow downs, or any
hold ups. Just 270km straight blast. My engine has about 6,000 km on
it and everything that rotates is new (or rebuilt) - but still it is
quite exemplary performance. Oh I did use 91 octane being the highest
at the pumps. I have another run on Thursday and I will see what
happens then !!!!
///
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