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CHTs - What is acceptable?



 
 
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  #24  
Old August 21st 04, 02:14 PM
Jay Honeck
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Wish I did. I have an old analog 6 cylinder anaylzer.

If you want to protect your investment it would be HIGHLY recommended to

get
a good engine analyzer.


I'll second that motion. It's a tiny percentage of what your engine just
cost, and it provides invaluable data.

Trip and I have the same engine, both in PA28-235s. In my experience, after
observing my new engine with a JPI EDM-700 for several hundred hours, CHTs
of over 400 degrees are WAY out of normal range. I keep mine below 350, and
have no problem doing so.

In cruise they will settle into the 315-320 range. EGTs can range from 1350
to 1500, depending on leaning.

Now if you have only one cylinder out of line, it could be a sensor/probe
problem, or it could be a baffling problem. I sealed all visible holes in
my baffling with high-temp RTV, and saw my CHTs drop slightly, but
noticeably.

Good luck!
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"


 




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