Cylinders "pitted"

A

Apache123

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Hey, Steve!
The annual only had one squawk -- one of the cylinders was sent out for being pitted and getting a rechrome. This are what words I remember -- anyone mind elaborating what this typically means?

The engine has been running smooth (O-320) and no issues at all in flight, start-up, or cruise. Burns a qt about every 5hrs.

It was the ... Ahh I forget the number, farthest forward on the plane and from the pilots seat the left side. I don't know how significant this is, if at all.

Thanks for all/any info. =D

Steven
 
It means about $850 plus push/pull labor in Dallas.

Apache123 said:
The annual only had one squawk -- one of the cylinders was sent out for being pitted and getting a rechrome. This are what words I remember -- anyone mind elaborating what this typically means?

The engine has been running smooth (O-320) and no issues at all in flight, start-up, or cruise. Burns a qt about every 5hrs.

It was the ... Ahh I forget the number, farthest forward on the plane and from the pilots seat the left side. I don't know how significant this is, if at all.

Thanks for all/any info. =D

Steven
Click to expand...
 
Pitting is rust or delaminating of the chrome on the cylinder walls. The cylinder is taken off and sent into an engine shop to be reworked back to specs.

How many hours on the engine? Cylinders?

I think pilot's side forward is number 2 cylinder. Nothing significant about the location I can think of.
 
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Geico266 said:
Pitting is rust or delaminating of the chrome on the cylinder walls. The cylinder is taken off and sent into an engine shop to be reworked back to specs.

How many hours on the engine? Cylinders?
Click to expand...

If the cylinder was pitted, it wasn't a chrome cylinder to start with.
 
Cylinders are throw away items in my world...
Lots of parts make sense for reconditioning and repair... Cylinders are not one of those however...
They are highly stressed and 'reworking' one that is already in failure mode is not a good bet in my book... Better a freshly forged and machined cylinder than betting those micro cracks won't become macro cracks at a really bad moment...
To each his own (shrug) ...
 
Geico266 said:
Ah! Can a cylinder that was chromed be rechromed?
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Yes they are honed over size and re-chromed again and again.

Try finding a new cylinder for a Warner 145 or a Continental 330 horse.

When you know the time on a cylinder, it some times makes sense to overhaul it, but to chrome when there are new available doesn't make much sense to me.
 
Dr. O said:
Cylinders are throw away items in my world...
Lots of parts make sense for reconditioning and repair... Cylinders are not one of those however...
They are highly stressed and 'reworking' one that is already in failure mode is not a good bet in my book... Better a freshly forged and machined cylinder than betting those micro cracks won't become macro cracks at a really bad moment...
To each his own (shrug) ...
Click to expand...

I'd agree if it weren't for watching some folks go through ADs on cylinders that were new.

It's a crap shoot these days. Quality control has mostly gone to hell.
 
denverpilot said:
I'd agree if it weren't for watching some folks go through ADs on cylinders that were new.

It's a crap shoot these days. Quality control has mostly gone to hell.
Click to expand...
What is the most resent AD on cylinders?
 
Tom-D said:
What is the most resent AD on cylinders?
Click to expand...

Dunno. It was a TR182. You'd know better than I. Cylinders were all pulled and replaced at manufacturer's cost. I could ask for more details.

Was three years ago.
 
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