Low temp thermostat

[David Cooley]

At 02:07 PM 10/27/1999 -0500, you wrote:
>Funny how agreement goes.
>OK, all the NASCAR teams are wrong.
>BTW, I have tried to optimize fuel and spark curves so the following
>statemnt is wrong since you used the word all,

The only reason you can run more spark when you go to a cooler thermostat 
is because the PCM/ECM richens the mixture for the cooler temps... Richer 
charge, more resistant to detonation.  I think some people have a poor 
grasp of ignition timing here... A specific motor with unlimited octane 
will make max HP at some rpm with say 34 degrees total advance... more 
drops power, less drops power.  You richen the mixture and advance timing, 
what you've done is slowed the burn (rich mixture) and bandaided it by 
advancing the timing... you're probably at less total power than you had at 
the warmer temp/leaner mixture/less timing.




===========================================================
David Cooley N5XMT Internet: N5XMT at bellsouth.net
Packet: N5XMT at KQ4LO.#INT.NC.USA.NA T.A.P.R. Member #7068
We are Borg... Prepare to be assimilated!
===========================================================