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In a message dated 3/27/2004 7:44:24 PM Central Standard Time,
cgalley@qcbc.org writes:
I knew when I wrote that, someone would ask. Since you are
measuring the heat output, anything and every thing that effects engine power
will effect the temperature. Probe location, cylinder cooling, ambient air
temp, altitude, throttle setting, turbo boost if you have it, engine
condition, timing, spark plug condition, air humidity, mag condition, impulse
spring condition, exhaust system condition, gasoline. airfilter condition, and
I'll bet there are some I have missed. Between cylinders the probe
location, valve condition, baffling(cooling), and injectors can and do change
the indicated temps for each cylinder.
Thanks Cy, I forgot a few. I know that generally one is interested in
peak temp and appropriate degrees LOP or ROP, but in the old days it was just
the best "guess" since the probe might be on the right collector exhaust
pipe for 3 cylinders (Skymaster). I brought up your comment because these
days we are able to measure the combustion process that is occurring in each
cylinder with a great deal of accuracy. The old days are gone. Now,
we correctly want each cylinder to produce the same power and we want it to be
efficient or best and certainly, non destructive.
Scott Krueger
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