Ian & Irene Beadle wrote:
snipped
The spark plug temperatures run
consistantly 10 degrees C [50 F]. higher than the coolant temperature measured at
Mazda's spot on the block, which is usually 5 degrees C [41 F] higher than up top
near the thermostat, where the one for the EMC is.
Thanks for the good data Ian. the only thing I question is the
water temp when the plugs are 95C [203 F] You mean it is only
85C [185 F]?? Good cooling you got there on full power climb :-)
Paul Lamar
Charlie Kuss wrote:
Paul,
Does that mean that you don't question Ian's assertion that a 10 degree centigrade temp
RISE is 50 degrees farenheit? (It's only 18) I doubt very much that the actual temp is
10 degrees centigrade. If it is, that engine is not producing much power! :-)
Charlie Kuss
I had a sneaking suspicion there was something wrong with my conversion
numbers but I could not quite put my finger on it at the time.
10 C is indeed 50 F but the difference between 85 C and 95 C is indeed
10 C and only 18 F. See how the metric system screws us up?
As Vance is fond of saying; "We got to the moon on inches" :-0
Thanks for catching that Charlie.
The bottom of the plug shank is not the bottom of the threaded
portion of the plug so I suspect there still is a large
temperature gradient in that area. According to Mazda's data it is
much hotter at the real bottom of the plug or 210C or 410 F full
power WOT 7000 RPM.
Paul Lamar
The only good thing about the SI metric system is the use of decimal portions.
This leads me to believe that if the metric freaks want to force that system on us,
That I propose in retaliation that we decimal time. The time of seconds, minutes,
hours,days,weeks,months, and years is hopelessly out of date. We should use
mega, kilo,centi,milli,micro,pico - Galileos ( one astonomical day with the same
idiocy that changed cps to Hertz, and pressures to Pascals).
Vance
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