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Boroscope Results Titan XIO 360 9:1 190hp

T

Tcheairs

Well Known Member
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This engine was assembled new in Jan 2011. It was flown 114hrs between new and the end of 2021 when I purchased the plane from the builder. Since then it has flown another 110 hrs until the present by me. The engine has performed flawlessly during my ownership. (Hot) compressions on 4-17-25 were #1 78 #2 74 #3 78 #4 80 all over 80. The past 3 annuals the compressions have all been in the mid 70s cold.

Here's a link to the boroscope taken on the 4-17th. This is the first boroscope I have done on the engine. Considering the fact that it has performed flawlessly and the compressions have been consistently good, I was a little alarmed with these photos. If anyone sees red flags here, please point them out. The lineup of the photos are jpg 001-009 #1, 010-019 #3 020-029 #4 030-043 #2. I'd really appreciate your opinion/analysis of what you see. . Here's a link to the boroscope results.

988GH Boroscope 4-17-25 - Google Drive

drive.google.com drive.google.com
 
I am NO expert but the images I looked at look typical and I saw nothing that I would worry about.
 
Also not an expert, but all the valves looked fine -- no weird lopsided patterns, no strange coloring...Kudos...
 
Tcheairs said:
This engine was assembled new in Jan 2011. It was flown 114hrs between new and the end of 2021 when I purchased the plane from the builder. Since then it has flown another 110 hrs until the present by me. The engine has performed flawlessly during my ownership. (Hot) compressions on 4-17-25 were #1 78 #2 74 #3 78 #4 80 all over 80. The past 3 annuals the compressions have all been in the mid 70s cold.

Here's a link to the boroscope taken on the 4-17th. This is the first boroscope I have done on the engine. Considering the fact that it has performed flawlessly and the compressions have been consistently good, I was a little alarmed with these photos. If anyone sees red flags here, please point them out. The lineup of the photos are jpg 001-009 #1, 010-019 #3 020-029 #4 030-043 #2. I'd really appreciate your opinion/analysis of what you see. . Here's a link to the boroscope results.

988GH Boroscope 4-17-25 - Google Drive

drive.google.com drive.google.com
Click to expand...
Clunky to open and I don’t like opening files from others.
Why not just attach a specific photo?
 
I see no red flags but I also agree with plherke, Savvy is the way to go, a systematic approach with specific image sequences to get the whole picture.
 
Not seeing anything bad. Remember to remove valve keepers every 200hrs to check valve/guide clearance. Stuff rope in through the spark plug hole to keep the valves closed while removing the keepers. Sticky valves can ruin the cam. Lots of info if you Google it
 
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