Touchdownzone
Member
Hi,
This is an XP-IO-360..
After the first 25 hours of run time I performed an inspection as recommended in the XP-360 operators manual. In addition to changing the oil and ignition inspection I did a borescope inspection on all cylinders.
No. 1,2 and 4 cylinders showed no anomalies and are blank and shiny, however in No. 3 cylinder I found a fair amount of discolouration on the cylinder wall (see attached pictures).
After close examination I‘m positive that this is not corrosion but seems to be oil coal. The discoloration is located on the top half/upper part of the cylinder (plenum side..).
The engine has been run according run in recommendations (e.g full rich for the first two hours, then leaned to 75° ROP for the remaining 23h) with oil consumption stabilised at around 10 hours.
Overview
Closeup top left corner
Is this something that I need to be concerned off?
Appreciate all your inputs..
Daniel
This is an XP-IO-360..
After the first 25 hours of run time I performed an inspection as recommended in the XP-360 operators manual. In addition to changing the oil and ignition inspection I did a borescope inspection on all cylinders.
No. 1,2 and 4 cylinders showed no anomalies and are blank and shiny, however in No. 3 cylinder I found a fair amount of discolouration on the cylinder wall (see attached pictures).
After close examination I‘m positive that this is not corrosion but seems to be oil coal. The discoloration is located on the top half/upper part of the cylinder (plenum side..).
The engine has been run according run in recommendations (e.g full rich for the first two hours, then leaned to 75° ROP for the remaining 23h) with oil consumption stabilised at around 10 hours.
Overview
Closeup top left corner
Is this something that I need to be concerned off?
Appreciate all your inputs..
Daniel