BurnRate/Octane/RPM/Advance

Darrell Norquay dnorquay at iul-ccs.com
Tue Nov 5 04:26:26 GMT 1996


At 11:18 PM 10/31/96 -0500, you wrote:

>Q2: can someone explain optimim spark advance calculation? Octane/burn 
>rate/piston speed/distance to TDC/??/?? used here?  
>
>extra credit: for Q2- factor in higher intake pressure (15psi of turbo 
>boost) considerations. whats the reasoning behind reduced advance under 
>boost?

Read the FAQ contained at http://www.vtr.org/maintain/gasoline-faq.html.
Once you get past some of the chemistry, it contains a lot of information
about gasolines, as well as a wealth of general knowledge about the cause
and cure of knock.  Although thia won't answer your question directly, it
will fill in a lot of the blanks.  Also take note of the bibliography in the
FAQ, it contains references which may be invaluable to you in your quest for
the perfect curve...

regards
dn
dnorquay at iul-ccs.com




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