oil leak fixed - breaking in new cylinders

A while ago I posted about an incurable oil leak in my '79 TR-182. Turned
out to be rings. Decided to get a top overhaul. Now I am breaking in the new
cylinders.

On one hand I've been told, in capital letters, "DO NOT BABY THE ENGINE"

On the other jand I've been told to maintain CHT of 325-350, which is quite
a trick given no cylinder thermometer. One mechanic said to just keep it in
the green for the first 20 hours to keep the turbo from generating too much
heat.

Any comments?

Thanks,

Michael

Michael 182 wrote:
A while ago I posted about an incurable oil leak in my '79 TR-182. Turned
out to be rings. Decided to get a top overhaul. Now I am breaking in the new
cylinders.
/snip/
Michael,

Glad I could help! As far as break-in, just fly at least as hard as you
normally would, and she'll be fine.

Happy Flying!
Scott Skylane
N92054

"Michael 182" wrote in message news:uR2ab.374025$cF.110854@rwcrnsc53...

On the other jand I've been told to maintain CHT of 325-350, which is quite
a trick given no cylinder thermometer. One mechanic said to just keep it in
the green for the first 20 hours to keep the turbo from generating too much
heat.

You don't have a CHT or you don't have one on that cylinder? I thought 182's
had at least a single point CHT.

I don't think I have one - have an egt and a carb temp. I'll look again when
I get in the plane, but I can't picture it.


"Ron Natalie" wrote in message
. ..

"Michael 182" wrote in message
news:uR2ab.374025$cF.110854@rwcrnsc53...

On the other jand I've been told to maintain CHT of 325-350, which is
quite
a trick given no cylinder thermometer. One mechanic said to just keep it
in
the green for the first 20 hours to keep the turbo from generating too
much
heat.

You don't have a CHT or you don't have one on that cylinder? I thought
182's
had at least a single point CHT.

Including using the turbo for climb (which puts out a ton of heat)?

"Scott Skylane" wrote in message
...
Michael 182 wrote:
A while ago I posted about an incurable oil leak in my '79 TR-182.
Turned
out to be rings. Decided to get a top overhaul. Now I am breaking in the
new
cylinders.
/snip/
Michael,

Glad I could help! As far as break-in, just fly at least as hard as you
normally would, and she'll be fine.

Happy Flying!
Scott Skylane
N92054

"Michael 182" wrote:
On one hand I've been told, in capital letters,
"DO NOT BABY THE ENGINE"

On the other jand I've been told to maintain
CHT of 325-350

Both correct. Running at high power is necessary to seat the rings. Low
temperature is necessary to prevent glazing the cylinders.

Keep the cowl flaps open and the mixture rich. Keep the power high - don't
fly so high that power is reduced below 75% until the cylinders are broken
in.

How come you don't have a CHT gauge?
--
Dan
C172RG at BFM

FAR 23.1305(b)(3) says you need a CHT indicator for each air cooled engine
with cowl flaps. There ought to be one there somewhere.

"Michael 182" wrote in message
et...
I don't think I have one - have an egt and a carb temp. I'll look again
when
I get in the plane, but I can't picture it.


"Ron Natalie" wrote in message
. ..

"Michael 182" wrote in message
news:uR2ab.374025$cF.110854@rwcrnsc53...

On the other jand I've been told to maintain CHT of 325-350, which is
quite
a trick given no cylinder thermometer. One mechanic said to just keep
it
in
the green for the first 20 hours to keep the turbo from generating too
much
heat.

You don't have a CHT or you don't have one on that cylinder? I thought
182's
had at least a single point CHT.

"Michael 182" wrote in message et...
I don't think I have one - have an egt and a carb temp. I'll look again when
I get in the plane, but I can't picture it.

Do you have cowl flaps?

"Dan Luke" c172rgATbellsouthDOTnet wrote in message ...
"Michael 182" wrote:

Keep the cowl flaps open and the mixture rich. Keep the power high - don't
fly so high that power is reduced below 75% until the cylinders are broken
in.

Here's Mattituck's take on it.

http://www.mattituck.com/new/articles/engbrkin.htm

Ron Natalie wrote:

"Michael 182" wrote in message news:uR2ab.374025$cF.110854@rwcrnsc53...


On the other jand I've been told to maintain CHT of 325-350, which is quite
a trick given no cylinder thermometer. One mechanic said to just keep it in
the green for the first 20 hours to keep the turbo from generating too much
heat.


You don't have a CHT or you don't have one on that cylinder? I thought 182's
had at least a single point CHT.

Bottom left gauge in the six pack. Although there is no temps shown
except a middle one and a red line.