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"Kyle Boatright" <kboatright1@comcast.net> wrote:
>On Lycoming cylinders, I believe the CHT boss is already drilled and tapped.
>I know they were on mine.
>
>KB
There is a pipe like fitting that is screwed into those holes. The CHT probe is
then inserted into the fitting and a BNC like cap compresses a spring that holds
the tip against the head (at least it was that way with the Grand Rapids EIS
that I used). The hole in the cylinder head isn't very deep at all. Maybe 3/8
inch. It is really like one of those digital thermometers that you push against
your head inside your ear.
In another application I couldn't use the 14mm spark plug probe since I had 10mm
spark plugs and instead just put it under one of the head nuts on my VW.
CW
>
>"flybynightkarmarepair" <ryoung@lmi.net> wrote in message
>news:1178951918.733343.47970@p77g2000hsh.googlegroups.com...
>> How deep is the hole a "bayonet" type CHT probe fits into?
>>
>> I do not like the spark plug senders, and want to drill the cast-in
>> boss for a CHT sender to suit the probes commonly available, but
>> without a probe in hand, I cannot tell whether this is possible.
>>
>> Anybody who can answer this question already knows what they look
>> like, but this forum serves an educational purpose for people other
>> than me, hopefully, so here is what I have talking about:
>>
http://buyjpi.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=5050T&Category_Code=
>>
>
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Re: CHT probes
