Van's Air Force
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Judge the boroscope pictures of an inactive Lycoming
- Thread starter jdelpeso
- Start date
pa38112
Well Known Member
Fog the cylinders, prime the oil system, and run it hard to break it in.
There is nothing wrong with these photos. If there is a problem with your cam, you won't know it until it runs for a while. Running it will not hurt anything.
Perform oil analysis at 25 hour intervals for the first 100 hours, then at every annual or oil change. If the cam is corroded, it will start to show up in your oil analysis. If nothing shows up, you are good to go...
There is nothing wrong with these photos. If there is a problem with your cam, you won't know it until it runs for a while. Running it will not hurt anything.
Perform oil analysis at 25 hour intervals for the first 100 hours, then at every annual or oil change. If the cam is corroded, it will start to show up in your oil analysis. If nothing shows up, you are good to go...
From the pics, yes it was definitely run at some point.
[email protected]
Well Known Member
Engine storage
OK!!! I have a similar situation. An 0-360 narrow deck engine that has set for 25+ years. Partially next to a furnace for 12 years and the rest in my dry shop. Spark plugs are all out and engine is not full of oil. But my shop is insulated and dry. And it was run for 4.1 hours in testing.
A way to see the cam is to pull the sump and stuff a borescope up through the case crack in the bottom.
I thought the stick Vivida scope would be to big to get into the crack so bought the bendy $500.00 one, Before I even took the sump off.
As luck would have it, I didn't need the high dollar scope.
After I removed the sump I was able to get the $200.00 Vivida up to the cam and see three of the lobes on the cam
That will give you a pretty good idea as to the rust-no-rust on the cam situation. If it's rusty, your screwed.
Yes, I realize you can only see one end of the engine and not the face of the lifters, But what's the alternative???? Tear the engine down??
Ain't gonna happen in my case. The engine is still hanging on an engine stand.
I intend to turn it upside down and pour oil in enough to cover the cam. Before I re-install it on the plane. That I hope to get done with some day.
My luck varies Fixit
OK!!! I have a similar situation. An 0-360 narrow deck engine that has set for 25+ years. Partially next to a furnace for 12 years and the rest in my dry shop. Spark plugs are all out and engine is not full of oil. But my shop is insulated and dry. And it was run for 4.1 hours in testing.
A way to see the cam is to pull the sump and stuff a borescope up through the case crack in the bottom.
I thought the stick Vivida scope would be to big to get into the crack so bought the bendy $500.00 one, Before I even took the sump off.
As luck would have it, I didn't need the high dollar scope.
After I removed the sump I was able to get the $200.00 Vivida up to the cam and see three of the lobes on the cam
That will give you a pretty good idea as to the rust-no-rust on the cam situation. If it's rusty, your screwed.
Yes, I realize you can only see one end of the engine and not the face of the lifters, But what's the alternative???? Tear the engine down??
Ain't gonna happen in my case. The engine is still hanging on an engine stand.
I intend to turn it upside down and pour oil in enough to cover the cam. Before I re-install it on the plane. That I hope to get done with some day.
My luck varies Fixit
