air-fuel ratio to temp

[Robert Gallant]

In message <9505090353.AA03067 at merlin.nando.net>  writes:

> >boost tuning and suggested a "safe" setting of 1600-1700 F for the rotary.
> >
> WOW... 1600-1700 is a lot...

Not for the rotary.  I've seen temps as high as 1900 F (when the engine was 
normally aspirated).  This is normal!

> Well... Mixture being rich won't keep a motor with too much
> advance/compression/hotspots in the combustion chamber from pinging..

No doubt, but it will stop detonation from running lean.

> The computer did it's job though.. as you back off the gas, it should go 
> lean.

Maybe I wasn't clear.  I backed off the gas, then slowly got back into it.  At 
6-8 psi of boost it started to lean out.

> Also understand that the O2 sensor isn't linear.. at 14.7:1 A/F, it should
> be .45-.5 volts... After that it just means it is richer/leaner than stoich,

Yep, realized this.  But when I see .2..v, I know its lean (and it shouldn't be 
reading this while under boost, especially at 7000 rpm :-).

Later

Rob
gallant at oasys.dt.navy.mil