CHTs - What is acceptable?

What is an acceptable CHT in cruise? How hot can one stay in extended cruise
flight? I've got 6 new ones and want to take care of them.


Thanks in advance.


Trip

In a previous article, (TripFarmer) said:
What is an acceptable CHT in cruise? How hot can one stay in extended cruise
flight? I've got 6 new ones and want to take care of them.

Our club instructors caution people not to lean the Lance to anything
higher than 1400 degrees.

--
Paul Tomblin http://xcski.com/blogs/pt/
Every fleeting thought you've ever had in your life, no matter how bizarre,
is someone's lifelong obsession. And he has a website.
-- Skif's Internet Theorem

The big bore Continentals allow you to go to 450. I never let mine get
over 400F which I can only do in the summer anyways. Mine are usually
in the 325-350 range.




TripFarmer wrote:
What is an acceptable CHT in cruise? How hot can one stay in extended cruise
flight? I've got 6 new ones and want to take care of them.


Thanks in advance.


Trip

Can I watch while you take the head temperature to 1400°? From a safe distance?

Jim


(Paul Tomblin)
shared these priceless pearls of wisdom:

-In a previous article, (TripFarmer) said:
-What is an acceptable CHT in cruise? How hot can one stay in extended cruise
-flight? I've got 6 new ones and want to take care of them.
-
-Our club instructors caution people not to lean the Lance to anything
-higher than 1400 degrees.


Jim Weir (A&P/IA, CFI, & other good alphabet soup)
VP Eng RST Pres. Cyberchapter EAA Tech. Counselor
http://www.rst-engr.com

On Wed, 18 Aug 2004 22:03:38 +0000 (UTC),
(Paul Tomblin) wrote:

In a previous article, (TripFarmer) said:
What is an acceptable CHT in cruise? How hot can one stay in extended cruise
flight? I've got 6 new ones and want to take care of them.

Our club instructors caution people not to lean the Lance to anything
higher than 1400 degrees.


1400 is EGT not CHT. I keep my CHT around 300 plus or minus.
Lycoming used to say 500, but that's really high the way I see it.

HTH.
z

Isn't that above the melting point of aluminium?

Mike
MU-2


"Paul Tomblin" wrote in message
...
In a previous article, (TripFarmer) said:
What is an acceptable CHT in cruise? How hot can one stay in extended
cruise
flight? I've got 6 new ones and want to take care of them.

Our club instructors caution people not to lean the Lance to anything
higher than 1400 degrees.

--
Paul Tomblin http://xcski.com/blogs/pt/
Every fleeting thought you've ever had in your life, no matter how
bizarre,
is someone's lifelong obsession. And he has a website.
-- Skif's Internet Theorem

TripFarmer wrote:
What is an acceptable CHT in cruise? How hot can one stay in extended cruise
flight? I've got 6 new ones and want to take care of them.

I asked those questions to each of the Lycoming and Continental reps at
AirVenture a couple of weeks ago.
The answers I got were, it depends on the engine and the airframe in
which they are installed. You need a copy of the engine manual for your
airframe. A range will be given in that reference.
I was asking about Continental TSIO-360FB in a 1979 P28T and a Lycoming
I0-520K1G5 in a 1978 PA32.

"john smith" wrote in message
...
TripFarmer wrote:
What is an acceptable CHT in cruise? How hot can one stay in extended
cruise
flight? I've got 6 new ones and want to take care of them.

I asked those questions to each of the Lycoming and Continental reps at
AirVenture a couple of weeks ago.
The answers I got were, it depends on the engine and the airframe in
which they are installed. You need a copy of the engine manual for your
airframe. A range will be given in that reference.
I was asking about Continental TSIO-360FB in a 1979 P28T and a Lycoming
I0-520K1G5 in a 1978 PA32.


I have seen this but never understood it. Why does the maximum allowable
CHT depend on the airframe?

Paul Tomblin wrote:

In a previous article, (TripFarmer) said:

What is an acceptable CHT in cruise? How hot can one stay in extended cruise
flight? I've got 6 new ones and want to take care of them.


Our club instructors caution people not to lean the Lance to anything
higher than 1400 degrees.


CHT of 1400? Are you sure this isn't EGT?


Matt

Paul Tomblin wrote:

Our club instructors caution people not to lean the Lance to anything
higher than 1400 degrees.

Uh ... I think you mean the EGT. CHTs are more in the 200 degree range.

George Patterson
If you want to know God's opinion of money, just look at the people
he gives it to.