9 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHBorescoped Cylinders - Thoughts?
Leading reported evidence
Replace ims bearing
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
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0
Unsuccessful attempts
1
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Read evidence and context
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Performed · outcome unconfirmed · Original poster
The IMS bearing was changed with an LN unit a couple of years ago.
Leading evidence: 'Replace ims bearing' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace ims bearing' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
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Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
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1
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Suggestion · Original poster
I perform regular oil changes with DT40 and send it to Blackstone for analysis and received no issues from the analysis.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
9 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
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Generation: 20261026T113718Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hello all,
I thought I would boresope the cylinders since I had the sump off to perform an inspection. This was an adventure in patience for sure. Any opinions on what you see? I did my best on snapping pictures when I was in a good position, but anybody who has done this can attest it can be difficult at times. I numbered the cylinders in the pictures.
Nothing leads me to believe that I have bore scoring, just thought I would have a little fun. It's a 2000 996 with 56k and lived its life in mostly warm climates on the west coast. It does not burn any oil and has no unusual sounds. I perform regular oil changes with DT40 and send it to Blackstone for analysis and received no issues from the analysis. The IMS bearing was changed with an LN unit a couple of years ago.
I�m no expert for sure and by a long shot. But, I�m on the Internet, so I have opinions. This is normal looking wear for the mileage. Which is to say, you can see some scratches and what appears to be piston rubbing in the same fashion that would lead to bore scoring in the future. Who know when this would happen. It could never happen, as long as the cylinder material doesn�t shed.
You created better photos than I did, so what's your secret? I know patience, time and experience all play into this. I did this on my back on jackstands so, probably not ideal. Nicely done.
hey man, my secret was I used to borescope wind turbine gearboxes all the time years ago. This was helpful. The biggest tip I can give besides patience, is make sure the camera is clean and free of oil. Enjoy!
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