10 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHCracked Cylinders
Leading reported evidence
Repair yep $9k is just an engine
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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Discussions that performed work without a confirmed outcome
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Performed · outcome unconfirmed
Yep $9k is just an engine that has been repaired and certified, no Nickies or internal work past the heads - I do believe it includes a valve job and replacement of a lot of other wear components...
Leading evidence: 'Repair yep $9k is just an engine' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Repair yep $9k is just an engine' (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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Suggestion
Don't let that scare you though, there are many cars on the road without nary of an understanding what IMS is and they are running perfectly fine above 100k miles or more.
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Suggestion
Yes LN engineering can "rebore" using Nickies, check out their website.
These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.
Repair yep $9k is just an engine
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
Yep $9k is just an engine that has been repaired and certified, no Nickies or internal work past the heads - I do believe it includes a valve job and replacement of a lot of other wear components...
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
Don't let that scare you though, there are many cars on the road without nary of an understanding what IMS is and they are running perfectly fine above 100k miles or more.
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.
10 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 · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T161109Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
It is great that LN Engineering has come out with fixes for the IMS problems. I also see reports of cracked cylinders with the 996 engines. While this seems like a smaller issue than the IMS or RMS problems, is there any way during a PPI that one can spot a potential problem with cracked cylinders? Is there a permanent fix (during a rebuild I imagine) for cracked cylinders?
I might be looking at 996s down the road (keeping the 84) but this seems like another problem that will leave you dead on the side of the road with an expensive bill...
The early model year cars had problems with cracked cylinders, however I believe the problem was not common and even less so on newer years. Be wary of cars with low miles.
Yes LN engineering can "rebore" using Nickies, check out their website. It is expensive though at $4000 just for the sleeving procedure alone and yes that would be considered as about a permanent "fix" as you can currently get.
http://www.lnengineering.com/boxster.html
You can look on this website to see what a dchunk failure looks like:
http://www.flat6innovations.com/engine-failures-illustrated
In my research that was one of the reason the 2002 moved to the 3.6L engine. It is only the 1999-2001 996 with the 3.4L engine that has the problem.
This is what I was told about the cracked heads, if the car has it you will know either wont start, will not run smooth, oil water mixed. Easy to tell if they are cracked, but you can't tell if its going to happen or not. Higher milage is a good sign that it may not happen, althought I just saw someone who had I believe an 2001 with 70K miles and heads cracked.
The repair if it happens is $8-9K I beleive, but does not require a new engine. Fixable but expensive.
You can get a certified 3.4L rebuilt engine from flat 6 innovations for $9k. That might be a better option. This is a potential buyer though, I'm sure we've scared him away by now.
I dont think your getting a full rebuild for $9k, it is more like $18K from flat 6.
I have a 3.4L and I love it! I'm going to drive it till it dies, blows up or I upgrade to a 997 mk2.
Do the scheduled maint and the IMS upgrade and dont worry about what might happen in life.
Yep $9k is just an engine that has been repaired and certified, no Nickies or internal work past the heads - I do believe it includes a valve job and replacement of a lot of other wear components...
"3.4L engine with 55K miles. This engine experienced a cracked cylinder head and slight intermix. Cylinder heads were removed, the crack was milled away and the area strengthened. Both heads were then fully reconditioned to include resurfacing, valve job, valve springs replaced and etc. Cylinder ... "
His inventory does change of course...
My car (2001) had a cracked cylinder (#2) at about 70k miles. There was excessive coolant consumption, a check engine light and pressure build up in the coolant system. I tore it down before D-chunk failure happened.
About 1 month ago I saw someone on craigslist trying to sell a 2000 carrera with a "fluid level issue". When I emailed him he told me it was a coolant issue...im sure he knew what the real issue was so be careful, there are some real dirtbags out there.
J beede is correct, in fact even the LN website recommends that it is replaced at interval as a service item... a "design" flaw in the m96 engine. Don't let that scare you though, there are many cars on the road without nary of an understanding what IMS is and they are running perfectly fine above 100k miles or more.
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