WB, NB, and broken pistons

[Ron Schroeder]

Thanks Bruce,

At 01:48 PM 8/27/00 -0400, you wrote:
>
>The 14.7:1, is a number that has a real nice place in theory.  It is not a
>sweet spot for anything, other then an AFR, to toggle over for emissions
>work.  It's an average.  In theory it best satisfies the chemist, little
>else.

I guess that from a chemists standpoint, O2 in the exhaust isn't totally
related to A/F ratio either, it depends on how much O is bound up in the
nitrogen, the carbon and the hydrogen and in what proportions, not just
"left over" O2

>Best idle quality can be quite richer or leaner, cruise can usually be
>leaner, and WOT richer.  In some applications, 14.7:1 at WOT, might melt a
>hole in a piston.   If the K/S catchs it you'll save the pistons,

Or when the vac advance stops advancing in the old days ;)

> but have
>little power with all the timing it will have removed.

>The above is in reference to a conventional GM, V8.
>
>Bruce


Ron Schroeder
WD8CDH
E. E. S.
wd8cdh at bnl.gov
rjs at bnl.gov
ron at 112motors.com
631 344-4561 Day
631 286-5677 Nite
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