on 7/14/03 11:15 AM, Marc Siegel at smarc@abs.net wrote:
> Ive been
> told that I should advance the timing a bit to allow for modern gasoline
> formulation. Other than empirical testing, is there a good rule-of-thumb for
> timing settings vs octane rating?
No, too many other variables. Higher octane lets you get away with more
advance without pinging, but how much is a matter for empirical testing.
I don't know why you would particularly advance timing based on "modern"
fuel formulations -- I find that suggestion highly suspect. Many areas have
different formulations for winter and summer, or just depending on the
market price of ethanol, so I can't see how there could be a hard-and-fast
rule.
--
Max Heim
'66 MGB GHN3L76149
If you're near Mountain View, CA,
it's the primer red one with chrome wires
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