Pelican Parts

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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

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YOUR RESEARCHMoved this question from 911 to 996 forum

Leading reported evidence

Run into this

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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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.

Discussions that performed work without a confirmed outcome: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Performed · outcome unconfirmed · Original poster
As I have been researching 911's off and on, I ran into this...
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Moved this question from 911 to 996 forum

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Leading evidence: 'Run into this' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Run into this' (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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Test engine cases

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Reported fixes: 0
Unsuccessful attempts: 1
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Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
Porsche produced a hyper expensive tool to test the engine cases for the correct "roundness" that almost no one has ever seen, much less used.
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Moved this question from 911 to 996 forum

Frequently discussed actions (2)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Run into this

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that performed work without a confirmed outcome: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Performed · outcome unconfirmed · Original poster
As I have been researching 911's off and on, I ran into this...
Original post Read captured discussion
Moved this question from 911 to 996 forum

Test engine cases

No successful repair reported for this finding.

0
Reported fixes: 0
Unsuccessful attempts: 1
Discussions

Read evidence and context

Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.

Suggestion
Porsche produced a hyper expensive tool to test the engine cases for the correct "roundness" that almost no one has ever seen, much less used.
Original post Read captured discussion
Moved this question from 911 to 996 forum

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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.

2 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

Pelican Parts: 1 discussions

0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.

0 acknowledgements have no verified action link; they do not establish a repair result.

Generation: 20261027T165639Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

As I have been researching 911's off and on, I ran into this... "We originally purchased this vehicle from another dealer with the understanding that it needed a clutch. We did the clutch and flywheel, but then noticed an oil leak. Porsche knows that 5% of their engines in ’99 have an incorrectly machined block. When you put the rear main seal in, it’s not 100% centered and oil does leak. For the individual who has the resources to repair this engine, this is truly an exceptional deal." Perhaps someone can enlighten me? Are there VIN's to avoid? Thanks You would be better off in a 996 specific forum and I believe that a lot of what has been stated is bollocks but; the answer to your question is that Rear Main Seal issues in 996s were random but possible across the series so no, you can't pick specific VINS to avoid. __________________ Laurence 2008 cayenne GTS | 1998 spec Boxster | 1970 911E Coupe | 1969 912 Targa | Gone but still loved 2004 GT3 New project - 84 coupe with backdate to 70s STish looks, 3.6 motor and a less is more approach (2100# target)

POST 2Original post

Quotes source post: 8202470

There is no VIN list, or any other way to predict which engine's RMS openings are sufficiently out of round to cause leaks. Porsche produced a hyper expensive tool to test the engine cases for the correct "roundness" that almost no one has ever seen, much less used. There was an article in "Excellence" magazine about all this a couple years back In the real world, most shops faced with leaking RMS seals pull the offending unit and replace it with the latest PTFE unit, installing it at a depth of 13MM from the flywheel mating surface on the crankshaft. If that setup leaks, the engine cases are bad and you need a replacement engine.

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