HI All
I have a type 4 vw in a Jodel D18 and have duel CHT. I monitor the
two back cylinders from the spark plug point
However some time ago while I was removing the plugs for general inspection
I broke the ring that the plug goes through
so I clamped it to one of the fins on the head about mine way on the head.
during normal operation it reads about 50Deg lower than the other side so
from that I figured that the plug point must be the hottest point and as the
plug is threaded in to the alloy head that would be the first or at list
around vicinity of the plug would start to melt (so to speak )first. And
also from some of the vw heads that I seen which have been over heated the
plug area is always the point were it melts first.
So personally I think this would be the best point to monitor. (Just my
thoughts)
Albert Cassar
-----Original Message-----
From: krnet-boun...@mylist.net [mailto:krnet-boun...@mylist.net]On
Behalf Of Orma
Sent: Tuesday, 23 August 2005 5:42 PM
To: KRnet
Subject: Re: KR> Re: Engine CHT temps
Steve Bennett told me that the reading under the plug is always hotter then
the other location you might pick. A manual that lists the temp and
specifies a location for the probe may only be accurate at that specific
location, and if you move the sender to a different place, the same
temperature range may not apply. I would think that under the exhaust stud
will give you information that you will have know way of knowing the value
of. Consider that the EGT probe which is installed as close to the head as
possible will read gas temps as high as 1600 deg. I have 4 cylinder CHT on
my KR with type 4 engine, and one of the probes is located as close to the
factory CHT hole as I could get it. I use the numbers in my KR manual.
Orma
Southfield, MI
N110LR Tweety, old enough to drink this year
Flying and more flying, to the gathering or bust
http://www.kr-2.aviation-mechanics.com/
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