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Thank you Walter, George and
Scott,
< 15 years ago, there were a lot of people and engine
shops that openly <advocated routine operation of our engines
with CHTs up around 420d F. <Or 410 or 400.
But nobody thought continuous operation at 420d F was < a "bad
thing". < I think some serious re-evaluation of that
notion has taken place.
I'll definitely be taking more care with max
sustained cyl temps over 380 deg f.
(The only time I've ever done that was while racing
in the Airventure Cup anyway - that's racing)
Yes Scott, the JPI graphs are the
ticket.
The lines shown in your post are too cluttered to
get good numbers. The time scale needs to be expanded so more exact rate
data can be picked off.
The engine start part of the graph does show more
gradual temp changes -- no shock there.
It's hard to know what caused the "spikes" in the
sample.
Mark Ravinski
N360KB 1361 hrs
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