7 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH02-05 motor question
Leading reported evidence
Install wrong way 'round
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
(Another problem I read about is the seal is different and some few times the new seal was installed the wrong way 'round which had the new seal leaking again in no time.)
Leading evidence: 'Install wrong way 'round' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, the most frequently mentioned possible cause is 'basis' (1 discussions; 0 report identifying it and 1 suggest it). The most frequently discussed action is 'Install wrong way 'round' (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.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
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.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
The latest factory design ran up to '05 in the 997 then was changed for '06 where the problem, I believe is pretty much nonexistant.
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.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
In fact the GT2/GT3 engine can be more prone to RMS leaks than the other engines since Porsche used a lower friction seal which may not seal quite as well.
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.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
The M96 motor used in the first gen Boxster and water cooled n/a Carreras except the GT3 was the first Porsche motor to use lokasil cylinders which in some ways is looking inferior to nikasil liners used previously.
Use regularly and the seal dries out, shrinks, and leaks
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
It doesn't help either that many of these cars do not get used regularly and the seal dries out, shrinks, and leaks.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Install wrong way 'round
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
(Another problem I read about is the seal is different and some few times the new seal was installed the wrong way 'round which had the new seal leaking again in no time.)
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
The M96 motor used in the first gen Boxster and water cooled n/a Carreras except the GT3 was the first Porsche motor to use lokasil cylinders which in some ways is looking inferior to nikasil liners used previously.
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
In fact the GT2/GT3 engine can be more prone to RMS leaks than the other engines since Porsche used a lower friction seal which may not seal quite as well.
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
The M96 motor used in the first gen Boxster and water cooled n/a Carreras except the GT3 was the first Porsche motor to use lokasil cylinders which in some ways is looking inferior to nikasil liners used previously.
Outcome qualification: Negation, uncertainty or missing explicit repair resolution overrides the raw extraction signal.
Coverage and how to read this overview
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.
7 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 1 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261027T025149Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
All normally aspirated 996/7 911's up until 2008 have an IMS bearing and are therefore susceptible to IMS bearing failure.
All 911 including and after 2009 do not have an IMS bearing as they moved a totally new DFI engine design.
Turbo engines are based on a completely different design, and therefore do not suffer IMS bearing failure.
All 996 911 engines (excluding the Turbo and the GT2, GT3 engines) up until Porsche switched over to the new engine design that did away with the IMS have some risk to experiencing the IMS failure.
All 2002 to 2005 and even up to 2008 engines can suffer from an RMS leak. In fact the GT2/GT3 engine can be more prone to RMS leaks than the other engines since Porsche used a lower friction seal which may not seal quite as well. It doesn't help either that many of these cars do not get used regularly and the seal dries out, shrinks, and leaks. A new seal is installed and the car sits unused for long periods and leaks again. (Another problem I read about is the seal is different and some few times the new seal was installed the wrong way 'round which had the new seal leaking again in no time.)
Anyhow, the last couple of years before the switchover -- from 2006 up to and including 2008 -- may have less risk but we won't know until these cars start to get older and accumulate more miles.
Still, many cars from every model year do not leak or once fixed do not leak again. And many many cars do *not* suffer an IMS failure.
Sincerely,
Macster.
Turbo and GT3 use a totally different motor known as the GT1. It's essentially the last air cooled design with a water cooled top end. I believe it was the basis for the GT1 racer and is very understressed for use in the GT3 and the Turbo. The GT1 motor uses a true dry sump and is unaffected by high G cornering and braking forces as far as oil starvation.
The M96 motor used in the first gen Boxster and water cooled n/a Carreras except the GT3 was the first Porsche motor to use lokasil cylinders which in some ways is looking inferior to nikasil liners used previously. The early motor castings were plagued with porosity, many of which were sleeved only to have the sleeves slip causing catastrophic engine failure. Many heads were cracking as well for no apparent reason other than a design flaw and generally in the same area and only on one bank causing coolant and oil intermix resulting in motor failure. Intermediate shafts on early motors were known to break. A rare occurance but happening often enough that Porsche redesigned the shafts and supporting bearings several times. The latest factory design ran up to '05 in the 997 then was changed for '06 where the problem, I believe is pretty much nonexistant.
"Just to add myself to the statistics, my 2005 Boxster had 27,000 miles when the IMS failed, all service done by the dealership, and never been abused etc. In fact, most people say I drive like a grandmother, haha. My failure occured while coasting down a long downgrade."
http://www.renntech.org/forums/topic...ost__p__210347
Honestly, a separate forum for IMS posts, perhaps a sub forum, is a GREAT idea.
all of the ones driven to work today DO NOT have flawed IMS RMS's - most of the ones in the garge also do not have flawed IMS RMS's and few on flatbed, shop racks and back parking lots at garages and junk yards DO NOT have IMS RMS issues....
while there are a few that do...I dont have a complete list of those handy
This is a source reference. Confirm exact model applicability in the original material.
